Gossen MetraWatt METRACELL BT PRO User manual

Operating Instructions
METRACELL BT PRO
Portable Battery Tester 3-447-058-03
4/7.23

METRACELL BT PRO Gossen Metrawatt GmbH
Table of Contents
1 Safety Precautions.................................................................................................................... 4
2 Important Information ............................................................................................................... 6
2.1 Intended Use / Use for Intended Purpose .......................................................................................................... 6
2.2 Use for Other than Intended Purpose................................................................................................................. 6
2.3 Liability and Guarantee....................................................................................................................................... 6
2.4 Opening the Instrument / Repairs....................................................................................................................... 6
3 Documentation.......................................................................................................................... 7
3.1 Identifiers ........................................................................................................................................................... 7
3.2 Definition of Terms ............................................................................................................................................. 7
4 Getting Started.......................................................................................................................... 8
5 The Instrument .......................................................................................................................... 9
5.1 Scope of Delivery ............................................................................................................................................... 9
5.2 Optional Accessories ......................................................................................................................................... 9
5.3 Instrument Overview ........................................................................................................................................ 10
5.4 Relevant Standards.......................................................................................................................................... 11
5.5 Measurement Inputs ........................................................................................................................................ 11
5.6 LCD Display ..................................................................................................................................................... 12
5.7 Function Keys / Navigation............................................................................................................................... 12
5.8 RFID Reader .................................................................................................................................................... 12
5.9 Attachment Options ......................................................................................................................................... 13
5.10 Technical Data ................................................................................................................................................. 13
5.11 Characteristic Values........................................................................................................................................ 14
6 Operation................................................................................................................................. 15
6.1 Power Supply (rechargeable batteries) ............................................................................................................. 15
6.2 Switching the Instrument On/Off ...................................................................................................................... 16
6.3 System Settings............................................................................................................................................... 16
6.4 Establishing and Terminating Wireless Connections ......................................................................................... 17
6.5 Testing the RFID Reader .................................................................................................................................. 19
7 Menu and Functions ............................................................................................................... 20
7.1 Overview.......................................................................................................................................................... 20
7.2 Main Menu....................................................................................................................................................... 23
7.3 Measurement Menu ......................................................................................................................................... 23
7.4 Data Menu ....................................................................................................................................................... 27
7.5 The SETTINGS Menu....................................................................................................................................... 29
7.6 INFO Menu ...................................................................................................................................................... 30
8 “BT PRO Manager” PC Software ........................................................................................... 31
8.1 Installation, Launching the Program and Update .............................................................................................. 31
8.2 Overview.......................................................................................................................................................... 32
8.3 Defining the Data(base) Storage Location......................................................................................................... 34
8.4 Backing Up the Database ................................................................................................................................ 35
8.5 Restoring the Local Database .......................................................................................................................... 35
8.6 Testing the Database Backup Copy ................................................................................................................. 36
8.7 Managing User Accounts................................................................................................................................. 36
8.8 Basic Settings.................................................................................................................................................. 39
8.9 Creating and Managing the Battery Database .................................................................................................. 40
8.10 Transferring the Battery Database to the Battery Tester ................................................................................... 47

Gossen Metrawatt GmbH METRACELL BT PRO
8.11 Assigning RFID Tags to Batteries (DUTs)...........................................................................................................49
8.12 Importing Measurement Data............................................................................................................................50
8.13 Viewing Measurement Series and Creating Measurement Evaluations (reports).................................................52
9 Preparing Measurements ........................................................................................................59
9.1 General Information (Procedure)........................................................................................................................59
9.2 Switching Polarity On or Off ..............................................................................................................................59
9.3 Connecting Measuring Accessories ..................................................................................................................60
10 Performing Measurements......................................................................................................62
10.1 General Information...........................................................................................................................................62
10.2 Multimeter Measurements.................................................................................................................................64
10.3 Float Measurement ...........................................................................................................................................65
10.4 Discharge Measurement ...................................................................................................................................67
10.5 Charge Measurement .......................................................................................................................................69
10.6 Resistance Measurement..................................................................................................................................71
10.7 Temperature Measurement...............................................................................................................................73
10.8 Connector Measurement ..................................................................................................................................75
10.9 Interval U Measurement ....................................................................................................................................77
10.10 Interval U+I Measurement .................................................................................................................................78
10.11 DMA35 Measurement (IrDA)..............................................................................................................................81
10.12 DMA35 Measurement (BT)................................................................................................................................83
11 Viewing, Editing, Transferring and Evaluating Measured Values ..........................................86
11.1 Viewing Measured Values / Measured Value Details at the Instrument...............................................................86
11.2 Viewing Measured Value Evaluations at the Instrument .....................................................................................86
11.3 Excluding a Measurement from Transmission (Deactivate Measurement) ..........................................................87
11.4 Deleting Measured Values.................................................................................................................................87
11.5 Saving Measured Values to a PC (Data Backup) ...............................................................................................87
12 Maintenance ............................................................................................................................90
12.1 Firmware Update ..............................................................................................................................................90
12.2 Housing and Display .........................................................................................................................................90
12.3 Measurement Cables ........................................................................................................................................90
12.4 Fuses................................................................................................................................................................91
12.5 Accessories ......................................................................................................................................................91
13 Service and Support ................................................................................................................92
13.1 Product Support ...............................................................................................................................................92
13.2 Repair and Replacement Parts Service,
Calibration Center and Rental Instrument Service..............................................................................................92
13.3 Training.............................................................................................................................................................93
14 CE Declaration .........................................................................................................................93
15 Returns and Environmentally Sound Disposal .......................................................................94

4
METRACELL BT PRO Gossen Metrawatt GmbH
1 Safety Precautions
Observe this documentation, in particular all included safety information, in order to protect yourself and others from injury,
and to prevent damage to the instrument.
• Carefully and completely read and adhere to these operating instructions, as well as the instrument’s condensed oper-
ating instructions.
The respective documents can be found at http://www.gossenmetrawatt.com. Retain these documents for future refer-
ence.
• Use only the recommended accessories with the instrument.
• Carefully and completely read and adhere to the product documentation for optional accessories. Retain these docu-
ments for future reference.
• Tests may only be performed by a qualified electrician, or under the supervision and direction of a qualified electrician.
The user must be instructed by a qualified electrician concerning performance and evaluation of the tests.
• Wear suitable and appropriate personal protective equipment (PPE) whenever working with the instrument.
• Implement adequate measures for protection against electrostatic discharge (ESD).
• Observe and comply with all applicable DIN, VDE, EN, IEC and ANSI directives. Inform yourself concerning the operat-
ing company’s specifications and guidelines, as well as those of the respective battery manufacturers.
• Batteries are electrochemical components with very high short-circuit currents. Avoid short-circuits which endanger
yourself as a user, the entire system or operating personnel.
• If the instrument doesn’t function flawlessly, remove it from operation and secure it against inadvertent use.
• The instrument may only be used as long as it’s in good working order.
Inspect the housing before use. Pay particular attention to any possible cracks and the insulation around the sockets.
Damaged components must be replaced immediately.
• Accessories and cables may only be used as long as they’re fully intact.
Inspect all cables and accessories before use. Pay particular attention to damage, interrupted insulation or kinked
cables.
Damaged components must be replaced immediately.
• Do not use the instrument after long periods of storage under unfavorable conditions (e.g. humidity, dust or extreme
temperature).
• Do not use the instrument after extraordinary stressing due to transport.
• Do not use the instrument in potentially explosive atmospheres.
• Use the instrument only within the specified ambient conditions.
• Use the instrument only in accordance with the specified protection class (IP code).
• The instrument must not be exposed to direct sunlight.
• The instrument and the included accessories may only be used for the measurements described in this manual.
• Only use accessories and the charger which are included with the battery tester or listed as optional accessories.
• Only use the instrument and the accessories within the specified measuring category.
• The measurement cables and all external cabling must not exceed an overall length of 1 meter.
• Plugging in the measurement cables and the power pack must not necessitate any undue force.
• Connect the ground wire before connecting the voltage conducting cable, and disconnect the voltage conducting cable
before disconnecting the ground wire.
• Check measurement cable continuity.
• Avoid short circuits due to incorrectly connected measurement cables.
• Never touch the conductive ends of the alligator clips, the test probes, the Kelvin probes or the angled Kelvin probes.
• Ensure that the alligator clips, the test probes, the Kelvin probes and the angled Kelvin probes make good contact.
• Do not move or remove the Kelvin probes or angled Kelvin probes during a measurement.
Unwanted sparking may otherwise occur due to test current.
• Do not remove or move the alligator clips, test probes, Kelvin probes or angled Kelvin probes until measurement has
been completed. Completion of measurement is indicated by means of an acoustic acknowledgment.
• Avoid simultaneously contacting the battery and the frame or hardware, which may be grounded.
• The battery tester is equipped with a transponder module. Determine whether or not use of the 125 kHz frequency is per-
missible in your country.
• The battery tester is equipped with a wireless interface module. Determine whether or not use of the implemented fre-
quency range of 2.402 to 2.480 GHz is permissible in your country.
• The input at the P+ measurement jack is equipped with a fuse link. The instrument may only be used as long as this fuse
is in flawless condition.
A defective fuse may only be replaced by our repair service.

5
Gossen Metrawatt GmbH METRACELL BT PRO
• The instrument only works with inserted batteries.
• The battery charger may only be connected to electrical systems (TN or TT) with a maximum of 230/400 V which com-
ply with applicable safety regulations (e.g. IEC 60346, VDE 0100) and are protected with a fuse or circuit breaker with a
maximum rating of 16 A.
• Do not use the device while the internal batteries are being charged.
• Do not use the test instrument if the battery compartment lid has been removed.
• Always create a backup copy of your measurement data.

6
METRACELL BT PRO Gossen Metrawatt GmbH
2 Important Information
Please read this important information!
2.1 Intended Use / Use for Intended Purpose
Periodic testing and well-organized maintenance are necessary in order to assure the availability of stationary battery sys-
tems.
The METRACELL BT PRO is a multifunctional instrument for testing batteries and battery blocks (referred to below as
“devices under test” or “DUTs”). It can be used to determine the current status of a DUT and pinpoint concealed defects.
The battery tester is used primarily for testing DUTs in stationary battery systems.
The battery tester stores measured values internally. All recorded measured values can be viewed on site. Individual
acquired values can be conveniently re-measured if necessary. Management of devices under test, as well as evaluation
and backup of the measured values, is handled by the included “BT PRO Manager” software. The measured values can
also be transferred to an external computer as a CSV file.
The battery tester is a portable instrument which can be held in the hand while performing measurements.
Safety of the operator, as well as that of the instrument, is only assured when it’s used for its intended purpose.
2.2 Use for Other than Intended Purpose
Using the instrument for any purposes other than those described in the condensed operating instructions or these instru-
ment operating instructions is contrary to use for intended purpose.
2.3 Liability and Guarantee
Gossen Metrawatt GmbH assumes no liability for property damage, personal injury or consequential damage resulting from
improper or incorrect use of the product, in particular due to failure to observe the product documentation. Furthermore, all
guarantee claims are rendered null and void in such cases.
Nor does Gossen Metrawatt GmbH accept any liability for data loss.
2.4 Opening the Instrument / Repairs
The instrument may only be opened by authorized, trained personnel in order to ensure flawless, safe operation and to
assure that the guarantee isn’t rendered null and void. Even original replacement parts may only be installed by authorized,
trained personnel.
Unauthorized modification of the instrument is prohibited.
If it can be ascertained that the battery tester has been opened by unauthorized personnel, no guarantee claims can be
honored by the manufacturer with regard to personal safety, measuring accuracy, compliance with applicable safety mea-
sures or any consequential damages.

7
Gossen Metrawatt GmbH METRACELL BT PRO
3Documentation
3.1 Identifiers
The following identifiers are used in this documentation:
3.2 Definition of Terms
A cell is an electrochemical energy-storage device and represents the smallest technically usable unit. One or more cells in
a housing form a block. In turn, a battery consists of a single block or a group of blocks which are connected in parallel
and/or series. Sufficiently high voltages are generated by connecting units into a string. Together, one or more batteries
and/or blocks, along with additional components (e.g. control systems, cooling, fuses etc.) form a system as the largest
unit.
A UPS system (uninterruptible power supply) usually consists of several rechargeable batteries, which in turn are made up
of several blocks and electrical circuits (e.g. the charging equipment, control electronics for monitoring mains voltage and
the inverter for converting outgoing direct voltage into alternating voltage).
From an organizational standpoint, a device under test is always a battery where the battery tester is concerned. Informa-
tion such as location (respective system) and the number of blocks is assigned to this battery.
Figure 2: Example – Blocks and Battery within a System
Identifier Function
Attention!
!
Warning
Safety information that must be complied with
Note!
Important
Important information which must be taken into consideration and complied with
Prerequisite A condition etc. which must be fulfilled before a given action can be taken
1. Procedural step Steps of a procedure which must be completed in the specified order
Result Result of a procedural step
•Enumeration
–Enumeration
Bullet lists
Figure 1: Caption Description of the content of a figure
Table 1: Description of the content of a table
Footnote Comment
Additional Components
Block Battery
System

8
METRACELL BT PRO Gossen Metrawatt GmbH
4 Getting Started
1. Read and adhere to the product documentation. In particular, observe all safety information in the documentation, on
the instrument and on the packaging.
"Safety Precautions" 4
"Important Information" 6
"Documentation" 7
2. Familiarize yourself with the battery tester.
"The Instrument" 9
"Operation" 15
"Menu and Functions" 20
3. Install BT PRO Manager software and familiarize yourself with the program 31.
4. Create a battery database 40.
5. Complete all required preparation in order to be able to perform measurements 31.
6. Perform measurements 62.
7. Evaluate your measurements "Viewing, Editing, Transferring and Evaluating Measured Values" 86.

9
Gossen Metrawatt GmbH METRACELL BT PRO
5 The Instrument
5.1 Scope of Delivery
Please check for completeness.
1 METRACELL BT PRO
1 Rubber holster
4 1.2 V AA batteries
1 Power pack
1 Set of multimeter test probes (KS29)
2 Alligator clips (KY95-3)
1 Set of Kelvin probes for 4-wire measurement (Z227D)
1Carryingstrap
1Carryingcase
1 BT PRO Manager
(battery tester management software)
1 Test report / factory calibration certificate
1 Condensed operating instructions
5.2 Optional Accessories
Some measurements necessitate optional accessories:
– AC/DC current clamp sensor
– CP1800 (Z204A) for measurements up to 1250 ADC or
– CP330 (Z202B) for measurements up to 300 ADC
– METRATHERM IR BASE temperature sensor (Z680A)
– Angled Kelvin probes for 4-wire measurement (Z227W)
– Spring-loaded contact pins as replacement parts for Kelvin probes (Z227F) and angled Kelvin probes (Z227W)
Please contact our product support team for further information on accessories 92.
Values recorded by and stored at the DMA 35 portable density meter from Anton Paar GmbH can be transferred to the bat-
tery tester. A description of how to use the density meter with the METRACELL BT PRO is included in these operating
instructions (62). Please contact Anton Paar GmbH for any further information concerning the DMA 35 density meter.

10
METRACELL BT PRO Gossen Metrawatt GmbH
5.3 Instrument Overview
5.3.1 Front
Figure 3: Front Panel
5.3.2 Back
Figure 4: Back of Instrument
Infrared Interface
RFID Reader
Charging Socket
(charging cable connection)
Measurement Input S−
Measurement Input P−/COM
Measurement Input S+
Measurement Input P+
Display
Function Keys
Rubber Holster (remov-
Carrying Strap Eyelets
Retaining Magnet
Retaining Clip
Battery Compartment Cover
(underneath the holster)

11
Gossen Metrawatt GmbH METRACELL BT PRO
5.3.3 Symbols on the Instrument and the Included Accessories
5.4 Relevant Standards
The battery tester has been manufactured and tested in accordance with the following safety regulations:
5.5 Measurement Inputs
All measurement inputs are referenced to ground and reference potential, P–/COM input. The measurement inputs are not
electrically isolated from each other.
The measuring ranges depend on the respective measurement inputs.
Warning concerning a point of danger
(attention, observe documentation!)
Double insulation (protection category II)
Charging socket location ("Instrument Overview" 10)
Attention!
!
Only rechargeable NiMH batteries may be inserted when the charger is connected.
Fuse
IRInfrared interface location
Static magnetic field
European conformity marking
The instrument may not be disposed of with household trash "Returns and Environmentally Sound Disposal"
94.
IEC 61010-1
EN 61010-1
VDE 0411-1
Safety requirements for electrical equipment for measurement, control and laboratory use –
General requirements
EN 60529
VDE 0470-1
Test instruments and test procedures
Degrees of protection provided by enclosures (IP code)
DIN EN 61326-1
VDE 0843-20-1
Electrical equipment for measurement, control and laboratory use – EMC requirements –
Part 1: General requirements
Measurement In-
put Function
S− Input for measuring DC voltage.
Measuring range: ±2450.00 mVDC Resolution: 0.01 mV
Input impedance: > 10 M
Sensing lead to minus pole for resistance measurement.
P−/COM Reference potential (ground potential) of all measurement inputs.
Current conducting cable to minus pole for resistance measurement.
S+ Measurement input for direct and alternating voltage measurements.
Measuring ranges: ±24.5000 VDC Resolution: 0.1 mV
±600.000 VDC Resolution: 1 mV
0 … 300.00 VAC Resolution: 10 mV
Input impedance: 1.6 M
Sensing lead to plus pole for resistance measurement.
P+ Current conducting cable to plus pole for resistance measurement.
Attention!
!
Max. 24 VDC
Maximum test voltage must not exceed 24 V DC at input P+.
The instrument is damaged if this value is exceed.
!
Max.
6VDC
800 m

12
METRACELL BT PRO Gossen Metrawatt GmbH
Note!
600 V CAT III refers to measurement inputs S+, S− and P−/COM.
5.6 LCD Display
All measured values, functions and settings can be observed at the instrument’s display. As a rule, the display at the LCD
panel appears in two lines. Three and four-line displays are also used in some cases, for example for measured values.
After switching the battery tester on, the initial display appears including the instrument’s designation and the version, as
well as date and time.
Figure 5: : Initial Display
After pressing any key while the initial display is shown, the battery tester is switched to the main menu.
All other displays and information which appear at the instrument depend on the previously selected function. The currently
selected function is always identified by a preceding arrow ->.
5.7 Function Keys / Navigation
5.8 RFID Reader
The display is surrounded by an RFID reader. If individual batteries are equipped with an RFID tag (transponder), the tag can
be scanned before measurement, thus making it possible to subsequently assign the measurement data to the respective
unit automatically 64.
5.8.1 125 kHz Technology
The RFID reader can only read RFID tags which use a frequency of 125 kHz. This technology offers several advantages:
• As one of the first RFID technologies, it’s widely used and easy to obtain.
• It uses robust tags which are relatively insensitive to interference from metals and liquids, which is crucial in battery envi-
ronments.
• Universal use (license-free ISM band)
• Minimal energy consumption (low-frequency long-wave band – LF passive tags)
• Reading range: approx. 10 cm
• Small data transfer volumes with fast reading process (e.g. only object ID as battery identification)
5.8.2 Reading RFID Tags
In order to read an RFID tag, hold the battery tester display 1 to 2 cm above the RFID tag. RF appears at display.
Key Function
“Function” key
– Switch on and off (16)
– Press briefly: Return to next higher menu level or cancel measurement
– Press and hold: End (63) or reactivate (63) measurement
Scroll down key “▼”
Selection of menu items or digits in downward direction.
Scroll up key “▲”
Selection of menu items or digits in upward direction.
“OK” key
– Open menus
– Execute functions
– Confirm entries
– Select digits
– Proper termination of measurements
– Press and hold: repeat measurement (63)
<date>
<time>
BTpro
<version>

13
Gossen Metrawatt GmbH METRACELL BT PRO
5.9 Attachment Options
The battery tester provides acoustic feedback for all important procedural steps, e.g. readiness to record measured values.
Consequently, there’s no need to continuously observe the display.
In order to ensure freedom of movement, comfort and quick work for the operator, the battery tester can be secured by
means of various retaining devices for the entire duration of measurement:
•Carryingstrap:
The operator can use the carrying strap to suspend the battery tester around his neck. The condensed operating
instructions include a description of how to attach the carrying strap.
• Retaining clip:
The operator can attach the battery tester to his belt with the help of the retaining clip.
• Retaining magnet:
The battery tester can be attached to magnetic surfaces such as battery cabinet doors with the retaining magnet.
5.10 Technical Data
Note!
Technical data for the AC/DC current clamp sensors, the temperature sensor and the DMA 35 density meter can be
found in the respective product documentation.
Power Supply Rechargeable NiMH batteries, 4 ea. 1.2 V type AA (recommended: Ansmann maxE 2500 mAh)
Input Impedance Measurement input S+: 1.6 M
Measurement input S-: > 10 M
Ambient Conditions
Operating temperature: +5 ... +40 °C
Storage temperature: -20 ... +60 °C
Relative humidity: Max. 75%, no condensation allowed
Elevation: Max. 2000 m
Electrical Safety
Measuring category: 600 V CAT III
Pollution degree: 2
Protection category: II
Fuse link: 1 ea. SIBA 600 V/10 A FF
Test voltage: Test voltage at measuring connection P+ may not exceed 24 VDC.
Electromagnetic
Compatibility (EMC)
Interference emission: EN 61326-1, class A
Interference immunity: EN 61 326-1
EN 61326-2-1
Mechanical Design
Protection: Housing: IP40
per DIN VDE 0470-1/EN 60529
(protection against ingress of solid foreign objects: 1.0 mm diam-
eter, protection against ingress of water: not protected)
Housing (W × H × D): Approx. 9.6 × 15.4 × 3.3 cm
Weight: Approx. 0.45 kg (without rubber holster)
Display: LCD, monochrome, luminous
Data Interfaces
IrDA: Connection for DMA 35 BASIC density meter (version 3)
RFID: Connection for RFID tag
Frequency range: 125 kHz
Transmission intensity: 34.3 dbμV/m, or -17.2 dbμA/m
Wireless interface: Connection to PC,
headset and DMA 35 density meter (version 4)
Frequency range: 2.4 to 2.4835 GHz
Transmission intensity: max. + 3 dBm
Internal memory Up to 300,000 data records

14
METRACELL BT PRO Gossen Metrawatt GmbH
5.11 Characteristic Values
Measuring Function Multimeter/
Connector
Multimeter/
Float/
Discharge/
Charge
Multimeter/
Interval U/
Interval U+I
Multimeter Resistance Temperature
Measured Quantity VDC VDC VDC VAC 1)
1) Frequency measurement only works as of an input voltage of 20 VAC.
Rel + Rct °C
Display Range -2450.00 …
+2450.00 mV
-24.5000 …
+24.5000 V
-600.000 …
+600.000 V
0.00 …
300.00 V
00.00 …
1000.00 m
-230.0 …
+230.0 °C. 2)
2) Only applicable if the temperature sensor is connected to the battery tester.
Measuring Range -2450.00 …
+2450.00 mV
-24.5000 …
+24.5000 V
-600.000 …
+600.000 V
0.00 …
300.00 V
00.10 …
1000.00 m
Frequency Display
– – – 40.00 to
99.99 Hz
100.0 to
999.9 Hz
1000 to
1400 Hz
3)
3) The 1000 to 1400 Hz frequency range is not calibrated. This is indicated at the display of the METRACELL BT PRO when “NC”
(not calibrated) appears.
––
Resolution 0.01 mV 0.1 mV 1 mV 10 mV 0.01 m0.1 °C
Input Impedance /
Test Current >10M1.6 M1.6 M1.6 Mlpapprox. 2 A > 10 M
Intrinsic Uncertainty ±(0.05%
rdg. + 10 d)
±(0.05%
rdg. + 10 d)
±(0.05%
rdg.+ 50 d)
±(2.0%
rdg. + 10 d) 4)
4) Within a frequency range of 45 to 500 Hz.
Note!
The characteristic values of the AC/DC current clamp sensors and the DMA 35 density meter, as well as additional
characteristic values for the temperature sensor, can be found in the respective product documentation.
±(3.0%
rdg. + 8 d)
S+
Measur-
ing Con-
nections
••••
S− •••
P+ •
P−/
COM ••• •••

15
Gossen Metrawatt GmbH METRACELL BT PRO
6Operation
6.1 Power Supply (rechargeable batteries)
6.1.1 Battery Operation
The battery tester is operated with rechargeable NiMH batteries. You have already inserted the batteries during initial startup
(condensed operating instructions).
Operating time is approximately 10 hours when the batteries are fully charged. A warning is generated when battery voltage
drops to below 4.8 V. The battery tester can be operated for approximately 1 more hour after this warning is generated.
Attention!
!
Leaky batteries can damage the device.
Check the batteries at short, regular intervals and after long periods of storage.
6.1.2 Charging Process
It takes about 3½ hours to charge the batteries.
Damage to the batteries or the instrument.
When charging, use only:
- The rechargeable batteries specified in the technical data
- The included charger
Always connect the charger to the battery tester first, i.e. before connecting the charger to the mains outlet.
Note!
Do not switch the battery tester on during charging. The battery tester may not be operated during charging and is
switched off automatically after 3 seconds.
The battery tester has been switched off.
4 NiMH batteries are inserted
(see “Replacing the Batteries” 15 for information on inserting batteries).
All measurement cables and accessories have been removed from the battery tester.
1. Insert the charger’s connector plug into the battery tester’s charging socket "Instrument Overview" 10.
2. Connect the charger to the 230 V mains outlet.
The batteries in the battery tester are charged.
3. Wait until the charging process has been completed.
It takes about 3½ hours to fully charge the batteries.
4. Unplug the charger from the electrical outlet.
5. Remove the connector plug from the battery tester’s charging socket.
The batteries are charged. The battery tester can now be used.
6.1.3 Replacing the Batteries
You can replace the batteries if necessary.
Attention!
!
Risk of injury due to contact with dangerous voltages.
Only use the battery tester when the battery compartment cover is inserted and firmly screwed into place.
Required tools: Philips screwdriver
The battery tester has been switched off.
All measurement cables and accessories have been removed from the battery tester.
1. Remove the holster from the battery tester: press against the bottom of the holster at the front and push it back and off
of the battery tester. As soon as the lower part of the battery tester is exposed, pull the instrument completely out of the
holster.
2. Place the battery tester face down on a stable surface.
3. Loosen and remove the screw from the battery compartment cover.
4. Unlock and remove the battery compartment cover.
5. Remove any batteries from the battery compartment.

16
METRACELL BT PRO Gossen Metrawatt GmbH
6. Insert 4 approved rechargeable batteries into the battery compartment, making sure that the plus and minus poles
match up with the provided polarity symbols.
Attention!
!
Only the rechargeable batteries specified in the technical data (13) may be inserted and used.
7. Place the battery compartment cover onto the battery compartment and press it until it audibly clicks into place.
8. Secure the battery compartment cover with the screw.
9. Pull the holster back over the battery tester: Observe the cut-outs in the holster for the front panel and the connections.
Push the battery tester into the holster at the top first as far as it will go. Then press on the front at the bottom until the
battery tester is fully reinserted into the holster.
The batteries have now been inserted. The battery tester can be used.
6.2 Switching the Instrument On/Off
6.2.1 Switching the Instrument On
1. Press and hold the Function key for approximately 2 seconds.
The initial display appears with the instrument’s designation and version, as well as date and time
("LCD Display" 12).
2. Press any key.
The main menu appears at the display. The battery tester can now be used.
6.2.2 Switching the Battery Tester Off
Normally, the battery tester is switched off manually. If the battery tester has not been used for more than 10 minutes, it’s
switched off automatically.
1. Select POWER OFF in the main menu with the help of the ▼key.
2. Press the OK key.
The display goes blank. The battery tester has been switched off.
Note!
The battery tester can also be switched off by pressing the Function key. The key must be pressed and held for
approximately 10 seconds to this end.
However, it’s preferable to switch the instrument off using the POWER OFF function.
6.3 System Settings
You can enter basic settings to the battery tester.
6.3.1 Setting Date and Time
Note!
Switch back and forth between standard time and daylight savings time manually. The battery tester is not equipped
with an automatic time change function.
1. Switch the battery tester on 16.
2. Press the OK key.
The main menu appears.
3. Select SETTINGS from the main menu using the ▼▲keys.
4. Press the OK key.
The SETTINGS menu is displayed.
5. Select SYSTEM using the ▼▲keys.
6. Press the OK key.
The SYSTEM menu is displayed.
7. Select SET TIME & DATE using the ▼▲keys.
8. Press the OK key.
The SET TIME & DATE menu is displayed. The cursor is positioned at the first digit of the date display (dd.mm.yy: dd =
day, mm = month and yy = year).
9. Use the ▼▲keys to enter the first digit.
10.Press the OK key.
The cursor jumps to the next position.

17
Gossen Metrawatt GmbH METRACELL BT PRO
11.Repeat steps 9. and 10. until the date has been completely entered.
After entering and confirming the last digit for the year, the cursor jumps to the first digit of the time display (ss:mm:hh:
ss = second, mm = minute and hh = hour)
12.Set the digits for time using the same procedure as described for setting the date.
After entering the last digit for current time, your settings are saved. The SYSTEM menu is displayed.
Date and time have been set.
6.3.2 Language Selection
Device language can be set to either English or German.
1. Switch the battery tester on 16.
2. Press the OK key.
The main menu appears.
3. Select SETTINGS from the main menu using the ▼▲keys.
4. Press the OK key.
The SETTINGS menu is displayed.
5. Select SYSTEM using the ▼▲keys.
6. Press the OK key.
The SYSTEM menu is displayed.
7. Select SEL.LANGUAGE using the ▼▲keys.
8. Press the OK key.
The SEL.LANGUAGE menu is displayed.
9. Select the desired language using the ▼▲keys.
10.Press the OK key.
The device language is changed.
6.4 Establishing and Terminating Wireless Connections
The battery tester can be wirelessly connected to various devices:
• To the DMA 3 density meter from Anton Paar GmbH
– DMA 35 BASIC (version 3) via infrared "DMA35 Measurement (IrDA)" 81
– DMA 35 (version 4) via wireless interface "DMA35 Measurement (BT)" 83
• To a PC in order to view, evaluate and save measurement data
"Saving Measured Values to a PC (Data Backup)" 87
• To a headset for improved audibility of signals generated by the instrument "Establishing and Testing a Wireless Inter-
face Connection with a Headset" 18
Note!
Although the battery tester can be paired with several devices via the wireless interface, simultaneous operation with
several devices via wireless interface is not possible.
Wireless interface connections can be terminated when they’re no longer needed.
Note!
In case of connection problems, it may be helpful to terminate (18) and reestablish wireless interface connections
(see references to specific sections above).

18
METRACELL BT PRO Gossen Metrawatt GmbH
6.4.1 Establishing and Testing a Wireless Interface Connection with a Headset
Acoustic signals are used to confirm various actions before, during and after a measuring procedure, as well as certain
instrument reactions.
The instrument can be paired with a headset, making it possible to better hear these signals in noisy work environments.
The connection can be checked in advance with a test signal.
Note!
Read and adhere to the documentation included with your headset.
The headset supports wireless interface profile “HSP”.
1. Switch the battery tester on 16.
2. Press the OK key. The main menu appears.
3. Select SETTINGS from the main menu using the ▼▲keys.
4. Press the OK key.
The SETTINGS menu is displayed.
5. Select BT SETTINGS using the ▼▲keys.
The BT SETTINGS menu is displayed.
6. Select LINK HEADSET using the ▼▲keys.
7. Press the OK key.
8. The PUT HEADSET IN PAIRING MODE prompt appears.
9. Set the headset to pairing mode. Read the documentation included with your headset to find out how.
10.Position the headset close to the battery tester.
11.Acknowledge the PUT HEADSET IN PAIRING MODE prompt by pressing the OK key.
BT PAIRING: SEARCH HEADSET appears at the display.
12.The headset and the battery tester are connected to each other. Pairing progress is displayed as a percentage. As soon
as the devices are successfully connected, SUCCESSFUL! appears at the display.
13.Put on the headset.
14.Press the OK key.
The BT SETTINGS menu is displayed.
15.Press the Function key.
The main menu appears.
16.Select SETTINGS from the main menu using the ▼▲keys.
17.Press the OK key.
The SETTINGS menu is displayed.
18.Select SYSTEM using the ▼▲keys.
19.Press the OK key.
The SYSTEM menu is displayed.
20.Select TEST HEADSET using the ▼▲keys.
21.Press the OK key.
A test signal is played back at the headset.
6.4.2 Terminating the Wireless Interface Connection
All paired devices are disconnected when the wireless interface connection is terminated. It’s not possible to disconnect
individual devices.
1. Switch the battery tester on 16.
2. Press the OK key.
The main menu appears.
3. Select SETTINGS from the main menu using the ▼▲keys.
4. Press the OK key.
The SETTINGS menu is displayed.
5. Select BT SETTINGS using the ▼▲keys.
The BT SETTINGS menu is displayed.
6. Select REM.PAIRINGS using the ▼▲keys.
7. Press the OK key.
The DO YOU REALLY WANT TO DELETE? prompt appears.
8. Press the OK key.
DELETING DATA! PLEASE WAIT appears briefly at the display. REM.PAIRINGS then appears at the display.
The wireless interface connection to all paired devices has now been terminated.

19
Gossen Metrawatt GmbH METRACELL BT PRO
6.5 Testing the RFID Reader
The RFID reader can be tested (12).
A compatible RFID tag (125 kHz) is available.
1. Switch the battery tester on 16.
2. Press the OK key.
The main menu appears.
3. Select SETTINGS from the main menu using the ▼▲keys.
4. Press the OK key.
The SETTINGS menu is displayed.
5. Select SYSTEM using the ▼▲keys.
6. Press the OK key.
The SYSTEM menu is displayed.
7. Select TEST TRANSP. using the ▼ key.
8. Press the OK key.
WAITING FOR RFID – – – – –> ( ) <– – – – – appears at the display. Furthermore, a repetitive acoustic signal indicates read-
iness to read.
9. Hold the battery tester’s RFID reader roughly 1 to 2 cm above the RFID tag.
The RFID tag is read. The RFID tag’s number appears at the display.
Refer to “Performing Measurements” 62 on how to assign RFID tags to DUTs and read them out during measurement.

20
METRACELL BT PRO Gossen Metrawatt GmbH
7 Menu and Functions
7.1 Overview
On Main Menu Level 1st Submenu Level 2nd Submenu Level 3rd Submenu Level 4th Submenu Level
Start Display Keys Display A Keys Display Keys Display Keys Display Keys
MEASURE-
MENT
MULTIMETER
2.45 VDC (S-) Start measurement
(short tone),
end measurement
(short tone), display
value
End measured
value recording,
return to
MULTIMETER
display
24.5 VDC (S+)
600 VDC (S+)
300 V AC (S+)
QUIT
FLOAT START
Start measurement
(short tone),
end measurement
(short tone),
display value
WANT TO QUIT
WITH SAVING?
WANT TO QUIT
WITHOUT
SAVING?
WAITING FOR DMA35
DISCHARGE SELECT. BATT
Battery database dis-
play,
brief tone indicates
RFID readiness to read
In case of manual
selection, return to
display.
In case of RFID,
display read re-
sult.
For RFID
CHARGE AREA: XXXX AREA: 0000
RESISTANCE
TEMPERATURE BATTERY: XXXX BATTERY: 0000
CONNECTORS BLOCKS: XXXX* BLOCKS: 0000
INTERVAL U MIN: XX.XXX
[Unit]
MIN: 0000
[Unit]
INTERVAL U+I MAX: XX:XXX
[Unit]
MAX: 0000
[Unit]
DMA35 (IrDA) INT [s]: XXXX** INT [s]: 0000
DMA35 (BT)
CLAMP A:
XXXX *** CLAMP A: 0000
CLAMP mV:
XXXX *** CLAMP mV: 0000
QUIT QUIT
DATA
SHOW DATA
Display of mea-
surement with
indication of
measurement
type, date, time
etc.
Display measured
values (see key)
Repeat
measurement
Display measured value
evaluation
View evaluation
via all keys, then
automatic return
EXPORT (CSV)
BT CSV
EXPORT
(CONNECT)
DEVICE PAIRED?
EXPORT TARGET OK?
SHOW BAT-DEF
Battery database
display,
brief tone indi-
cates RFID readi-
ness to read
In case of manual se-
lection, return to dis-
play.
In case of RFID, display
read result.
For RFID
CLEAR DATA
DO YOU REALLY
WANT TO
DELETE?
DELETING
DATA!
PLEASE WAIT!
Brief tone indi-
cates deletion,
return to CLEAR
DATA/BATT.
display
CLEAR BAT-DEF
DO YOU REALLY
WANT TO
DELETE?
DELETING
DATA!
PLEASE WAIT!
QUIT
Initial
Display
2 sec
ON

OK
ON
ON

OK
ON

OK
ON

OK
ON

OK
OK
ON

OK
OK
ON
OK
OK
ON

OK
OK
ON

OK
A
OK
OK
ON

OK
ON

OK
ON

OK
OK
ON

OK
OK
ON

OK
OK
ON
OK
OK