Pite BT3915 User manual

BT3915 Battery Tester
User Manual
P-141106-V1.8

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Catalogue
1. INTRODUCTION ...................................................................................................................................................... 3
1.1 SAFETY INFORMATION ............................................................................................................................................ 3
1.2 OPERATING PRECAUTIONS ...................................................................................................................................... 3
2. ABOUT BT3915 ....................................................................................................................................................... 4
2.1 ACCESSORIES .......................................................................................................................................................... 4
2.2 APPLICATION ......................................................................................................................................................... 5
2.3 FEATURE ................................................................................................................................................................. 5
2.4 TECHNICAL PARAMETER ...................................................................................................................................... 6
3. OPERATION .............................................................................................................................................................. 6
3.1 MEASUREMENT PREPARATION ................................................................................................................................ 6
3.1.1 Main Unit Structure and Operation .......................................................................................................... 6
3.1.2 Wire Connection .......................................................................................................................................... 7
3.1.3 Power On ..................................................................................................................................................... 7
3.1.4 About Reference Values ............................................................................................................................ 8
3.2 MEASUREMENT ..................................................................................................................................................... 9
3.2.1 Test for Single Cell ................................................................................................................................... 9
3.2.2 Test for Battery String ............................................................................................................................ 11
3.3 DATA MANAGEMENT ........................................................................................................................................... 13
3.4 SYSTEM MANAGEMENT ...................................................................................................................................... 15
3.4.1 Instrument Calibration .............................................................................................................................. 15
3.4.2 Time Setting ............................................................................................................................................... 16
3.4.3 System Update .......................................................................................................................................... 17
3.4.4 Version Information ................................................................................................................................... 17
4. DATAVIEW SOFTWARE .................................................................................................................................. 17
4.1 SOFTWARE INSTALLATION/UNINSTALL ................................................................................................................. 18
4.1.1 Software Installation ................................................................................................................................. 18
4.1.2 Software uninstall ..................................................................................................................................... 19
4.2 SOFTWARE OPERATION ......................................................................................................................................... 19
4.2.1 Import Data ................................................................................................................................................ 19
4.2.2 View & Delete Data .................................................................................................................................. 20
4.3 HELP ..................................................................................................................................................................... 24
4.4 HOT KEY .............................................................................................................................................................. 25
5. SERVICE AND MAINTENANCE ......................................................................................................................... 25
5.1 CLEANING ............................................................................................................................................................. 25
5.2 STORAGE .............................................................................................................................................................. 25
5.3 BAT T E RY M AI N T E N A N C E ....................................................................................................................................... 25
6. FAQ ........................................................................................................................................................................... 25
7. APPENDIX ............................................................................................................................................................... 26

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1. INTRODUCTION
This Users Manual gives full information on how to use BT3915 Battery Tester (hereinafter called
“Tester”) safely and effectively. Please read the manual carefully so as to obtain maximal performance
of the Tester.
Warning: Read this manual completely before connecting and powering on the Tester to avoid
possible damage caused by improper use of this instrument.
1.1 Safety Information
For your protection, please read this safety information completely before operating the activator.
Carefully observe all warnings, precautions and instructions.
WARNING: Servicing described in this manual is to be done only by qualified personnel. To avoid
electric shock, do not service the instrument unless you are qualified to do so.
DANGER
Safety testing has been done on this instrument thoroughly
before shipment. However, mishandling during use could result
in injury or other bad consequences, as well as damage to the
instrument. Make sure that you understand the instructions and
precautions in the manual before use. We disclaim any
responsibility for accidents or injuries not resulted directly from
instrument defects.
Safety Symbols
Description of symbols used in this manual.
DANGER
Indicates correct operation to prevent an extreme hazard that
could result in serious injury or other bad consequences to
users.
WARNING
Indicates correct operation to prevent a significant hazard that
could result in serious injury or other bad consequences to
users.
CAUTION
Indicates correct operation to prevent possible injury to users
or damage to the instrument.
NOTE
Indicates advisory items related to performance or correct
operation of the instrument.
1.2 Operating Precautions
Safety information
1) BT3915 is widely used in power utility, telecom machine room, industrial production management
and the alike for testing of resistance and voltage of standby batteries. It may somehow be
dangerous during operation. Only qualified technicians or specialized trained personnel are

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recommended to use it.
2) This device includes a LCD touch screen. Please avoid crashing, moisture, hard scratching or any
other operation that may damage the screen.
3) This device includes a rechargeable Lithium battery. Please charge it only with ’s battery charger.
The rechargeable batteries may get heat during charging. User should take care when taking out
batteries after charging. Disconnect the charging unit from the power supply when it is not in use.
4) Do not try to uninstall the device by yourself. If necessary, please contact for some helpful
assistance.
Disclaimer
will not be liable to any accessories/product malfunction or damage, or any personal harm caused
by any misuse of product, illegal purpose of using this device or any other way not described in this
user manual.
2. ABOUT BT3915
BT3915 is a new generation of battery tester with touch-screen. It is strictly designed to evaluate and
maintain all stationary power systems including Uninterruptible Power System.
Via accurate testing of resistance and voltage, it gives an indication of battery capacity and technical
status. The measurement data can be read on the instrument display directly. And it can also be
uploaded to PC simply by using the USB drive. With the analyzing software, you could not only keep a
record of the testing result but also have detailed analyzing for the status of batteries in different
testing conditions.
2.1 Accessories
After receiving the instrument, make sure you have all the following parts.
Portable bag for convenient carrying and field testing.

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Detailed packing list as blow:
Name
Number
Name
Number
Portable bag
1
Tes tin g clamp (pair)
1
Main unit
1
Power adaptor
1
USB converter
1
USB drive
1
User manual
1
Pin type probe(pair, Optional)
1
2.2 Application
BT3915 Battery Tester is widely used in the following areas:
¨ Tel ec om: Ce ntr al Office, data processing centers and Remote Sites
¨ Power Utility: Switchgear, Power Station and Power Plant
¨ Financial Institutions: Corporate Data Centers
¨ Petrochemical: Process Control systems
¨ Offshore platforms
¨ Government: Local and regional
¨ Tax a nd Rev enue Processing Centers
¨ Homeland Security, Schools, Army and Navy
¨ Air force Facilities, Fire and Police Agencies
¨ Hospital UPS system
¨ Electrical vehicle suppliers
¨ SLA battery manufactures
2.3 Feature
¨ Wide test range: 5~6000Ah, compatible for single cell of 1.2V, 2V, 6V and 12V
¨ Smart and portable hand-held device, rugged and easy-to-go
¨ Colorful touch screen with optional operations of keyboard
¨ Simultaneously test for voltage, resistance and estimated capacity of batteries
¨ Online measurement, no need to remove battery and string from its system for testing, safe and
convenient
¨ Fast testing for battery and string in seconds with testing data auto saving
¨ Strong anti-interference in high current with stable and accurate performance
¨ Tes tin g f req uen cy lo wer t ha n10 Hz, effectively avoid interference from capacitive resistance of

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battery itself
¨ Direct USB drive for software update and data transfer to PC for further analyzing
¨ Powerful PC management software, convenient for data storage and analyzing
¨ Big memory for testing data storage of more than 3000 cells
¨ Buzzer Alarm Function and over voltage protection, secure to use
¨ Auto-calibration function before testing, enhancing the testing accuracy
¨ Retest and compensation function: any faulty operation or omission could be retested simply with
one click
¨ Referenced data inside memory for the comparison of your test, and self-defined reference values
are available
2.4 Technical Parameter
Items
Parameters
Tes t r an g e
Resistance: 0.000mΩ~100mΩ
Voltage: 0.000V~150V
Tes t r es o lu tio n
Resistance: 0.001mΩ
Voltage: 1mV
Tes t a ccu ra c y
Resistance: ±2.0%rdg±6dgt
Voltage: ±0.2%rdg±6dgt
LCD display
240*320 pixel 3.5" TFT touch screen
Dimension
210mm*110mm*60mm
Weight
0.5kg
Memory
16M bytes，FLASH
Power supply
Rechageable Li-ion battery, more than 5 hours working time after full
charge
Power adapter
AC100V~240V/DC8.4V-1A
Communication interface
USB
* 16V-220V is for over voltage protection.
3. OPERATION
3.1 Measurement Preparation
3.1.1 Main Unit Structure and Operation
Below are the pictures for the main unit:
Back Side

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Bottom To p
Fig 3.1.1
Operation of touch-screen
Click on each menu to highlight it and click it again to carry out each function. Click “Back” to return to
the upper menu and click “Home” to return to the starting screen.
Operation of keyboard:
Keyboard operation has the same effect with touch-screen operation. Press each arrow key “←”, “→”,
“↑” and “↓” to highlight each menu and press Enter to activate it. And key Esc is for going back to
upper menu.
3.1.2 Wire Connection
Before measurement, please first connect the testing clip with main unit and fix the screw like Fig
3.1.2.1. Then clamp the black clip with the negative polar of battery and the red clip with positive.
NOTE:
1) To e nha nce t he m eas ure men t ac cur ac y, please try to clamp the clips around the posts of
battery. Rust or any insulating material (e.g. glue) around the posts will increase the
resistance. Therefore, please try to avoid these causes before connecting the clips.
2) Measurement of 3918 is based on 4-point measurement. Each clamp has two metal points
that are connected with the battery posts during measurement. This is same to the pin type
probe. So each time when you use the pin probe for measurement, make sure that all the four
pins on the pin probe should be connected with the battery posts well.
Fig 3.1.2.1 Fig 3.1.2.2
3.1.3 Power On
Switch on the power on/off button indicated in Fig 3.1.3.1, you will see the starting screen as Fig
3.1.3.2. Click any point of screen to view the main menu like Fig 3.1.3.3:

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Fig 3.1.3.1
Fig 3.1.3.2 Fig 3.1.3.3
About screen:
: This icon is for screenshot. Connect the USB drive with bottom of the main unit with USB converter,
highlight this icon, click it again and wait for a little while, the current screen will be snapped in the USB
drive.
06-11-2014 09:59:08: indicates the current time which is predefined in 3.4.2 Time Setting.
: This icon indicates the status of Li-ion battery inside main unit. When it is full green, it is full
charged. If it is blank, it indicates that battery is low. Please connect with the power adaptor timely for
charging.
U: When this letter turns green, it indicates the USB drive is well connected with main unit.
3.1.4 About Reference Values
BT3915 has pre-installed reference conductance for some common battery types. These values are
average conductance values got from samples of strong battery strings similar in condition and age of
usage. Generally, a sample of 30 new or healthy batteries are tested to obtain a value representative
of a new online battery 90 days after installation. By comparison, the differences between test results
and reference values will help you determine the string capacity and health status for further solutions.
Differences may reflect how a string was treated, installed, or maintained.
How to specify your reference values?
Reference values in BT3915 menu may not universally fit the batteries that you are testing. Therefore,
you are recommended to specify your own reference values. You have the following options to set
your reference value:
A. Consult to your document from battery manufacturer for the reference values for the batteries that
you are testing.
B. Tes t the ba tt e ri es in th e st r in g and u se t he lowest conductance under correct way of test for
reference value. For cells ranking in the string, please refer to String summary in 3.3 Data
Management.

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C. Use the average conductance of the string as reference value. This is only used for measurement
of battery string. For detailed setting, please refer to “Set average value as reference” in section
3.2.2 Test for Battery String.
Indications of Battery Condition
Below is the definition of the testing result for battery and battery string.
Indication
Reference
Guide
Good
0.8≤R%<1.15
-20%≤Measured resistance fluctuation<15%
Pass
1.15≤R%<1.5
15%≤Measured resistance fluctuation <50%
Warn
1.5≤R%<2.0
50%≤Measured resistance fluctuation <200%
Fail
2.0≤R%
Measured resistance fluctuation>200%
Abnormal
Vm<0.9 OR Vm>1.2 or
R%<0.8
Battery is Abnormal
Vm<0.9 OR Vm>1.2 or
R%<0.8
NOTE: You could also see reference values in Appendix of this manual.
3.2 Measurement
3.2.1 Test for Single Cell
This is for testing single cell. To do this, you will need to set the parameter of the cell before
measurement. If you have several blocks of batteries of the same rating (e.g. 2V, 100Ah), you are
suggested to use “string test” (see 3.2.2) which will be much more time-saving and convenient for data
management in PC software.
Select “Test Cell” in the menu to enter the screen for parameter setting. (See Fig 3.2.1.1).
Fig 3.2.1.1 Fig 3.2.1.2
Use main unit keyboard or mini keyboard on screen for number input.
Tot all y th er e are 5 options for single cell voltage: 1.2V, 2V, 6V, 12V and self-defined. Please click the
option of “Voltage” to view each one (Fig 3.2.1.1). As voltage changes, cell rating will be changed
accordingly. Click the box or use arrow keys to select the cell type that you will test. Reference
resistance will be changed to fit each cell type.

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Cell number is self-defined to distinguish from each other. This could be viewed in data management.
After the setting, click the button Start at right bottom to carry out the test.
Tes tin g r esu lt wi l l d is play in seconds like Fig 3.2.1.7. If you need to retest it, click the button Retest.
Click Save (in Fig 3.2.1.2) to save the testing result, or disconnect the testing clips from battery and
testing result will be automatically saved.
NOTE: As mentioned in 3.1.2 Wire connection, testing result may vary a little due to different way of
connection between testing clips and battery posts. Therefore, if testing result varies in different time,
please refer to the lower value.
Specify Battery Type & Reference Value
If you could not find the exact type of battery that you want to test, or you want to specify your own
reference resistance, you could self-define the parameter.
1) Specify battery type
If you have battery that has non-standard voltage type (e.g. 4V 100Ah), you could add this type. To do
this, please select “Defined” in the box of “Voltage”, then click Set Para at the bottom, input the
parameters required and click Add to save the setting (e.g. refer to images from Fig 3.2.1.3 to Fig
3.2.1.5). Maximally you could set 10 different voltage types.
2) Specify reference value
If you would like to set different resistance reference or cell type under the same battery voltage,
please first select voltage rating and then click the button Set Para to add these information.
Maximally you could add 10 different cell types under each battery voltage. Screen in Fig 3.2.1.6 and
Fig 3.2.1.7 are for your reference.
Fig 3.2.1.3 Fig 3.2.1.4