Projecta BM320 User manual

SMART BATTERY GUAGE
BATTERY METER
P/No. BM320

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IMPORTANT SAFETY INFORMATION
Please read this instruction thoroughly before installing the product.
WARNINGS
• Risk of explosive gas. Working in the vicinity of a lead-acid battery can be dangerous
• Batteries might release explosive gases during normal operation and charging
• Before using the product, read and follow the instructions carefully. Follow all
manufacturer’s instructions
• Do not smoke, use matches, use a cigarette lighter, or allow a spark or flame near
the battery
• Remove rings, bracelets, necklaces and watches when working with a lead-acid battery
• Before accessing the battery leads (Red for positive and Black for negative), disconnect the
all devices or power sources from sockets and dc terminals provided by the product
• Do not submerge the product in water or expose to rain
• Not recommended to use the product for critical power backup application
• Designed to work with 12V lead acid battery only
• This appliance is not intended for use by young children or infirm persons without
supervision. Young children should be supervised to ensure that they do not play with
the appliance
• Ensure that all cable connections have the correct polarity and are protected against
accidental short circuit
• Do not allow water or other liquids to enter the installation area

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OVERVIEW
Projecta BM320 – A sophisticated, full colour LCD monitor that accurately displays a
battery’s total capacity, overall health and general status. It is Ideal for camper trailer and
caravan interiors as it is housed in a modern and simple to install enclosure. The BM320
comes with all the necessary components to connect to your battery system.
It has the following features:
• 2.4” full colour LCD display
• Configurable Low battery capacity and battery health alarm
• Suitable for popular deep cycle AGM lead acid battery
• Using patented technology to monitor battery characteristics like battery state of charge
and state of health
DISPLAY SCREEN INSTALLATION
Choose a flat location which is easily accessible and easy to view the display screen.
The location should be indoors away from weather.
Screw the mounting clip using supplied self-tapping screws ensuring that the arrow is
pointing “UP”.
Drill a 15mm Diameter hole 20mm from the screw hole as pictured to allow the connector to
pass through.

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Plug in the supplied four pin connector to the recipicale at the back of the
battery monitor.
Feed the cable through the pre drilled hole and slide the left hand side of the battery
monitor into the bracket tab.
Close the battery monitor onto the clip until you hear the “click” sound.
Make sure that the cable assembly has been fed into the hole correctly.

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SHUNT AND WIRING INSTALLATION
IMPORTANT: to maintain accurate record of the battery capacity, all current must be passed
through the shunt.
Disconnect the battery and turn off all devices before beginning the installation.
Mount the shunt in a secure location with adequate protection from damage.
The BM320 is designed for 12V applications only.
NOTE: There should only be one cable connected to the battery negative terminal.
This should be to the battery side of the shunt to ensure all load is measured through
the shunt. All other NEG/Earth connections should be made at a load side of the shunt.

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BATTERY CABLE SELECTION CHART
ALTERNATIVE CONNECTION METHOD
NOTE: USE ONLY ONE CONNECTTION METHOD.
To connect using your own wiring harness use the supplied terminal block.
The terminal block is labelled, ensure you follow the wiring diagram and follow the colour
coded connection sequence.
Ensure no short circuit between the connector terminals and the wires. It is recommended
that a Fuse (1A fast blow) be used in line with the B+ve line.
Nearest Nominal AMP Nominal
B&S Area Rating O.D.
(mm²) (40°C) (mm)
8 7.71 66 5.5
6 13.5 92 7.2
4 20.26 120 8.3
3 26.45 150 10.2
2 32.07 167 11.3
1 39.55 187 12.1
0 49 219 12.7
00 64.15 260 14.5
000 83.19 298 16.4

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Part No. BM320
Battery Fuel Gauge
Input consumption current 12V/1.5 mAdc
(backlight off )
Input Voltage Range 6.0--17.0 Vdc
Max discharge current 320A
Display Resolution:
Current 0.1 A
Voltage 0.1V
Battery Capacity 0.1Ah
Type of Battery Supported Wet/AGM/Gel/Calcium
Display Physical Characteristics
Weight 0.12 kg
External Dimension 118mm (L) x 96mm (W) x 18mm(H)
Operating Temperature 0 to 50oC
Compliance
EMC Certified to meet AS/NZS 61000.6.3
QUICK START
1. Press ENTER button to acknowledge the Welcome message on the LCD screen
2. Select the type of battery (AGM,WET,GEL,CAL)
3. Enter the battery capacity and press ENTER button to confirm
4. Enter value for the low battery capacity alarm and press ENTER button to confirm
5. Enter the value for battery health warning alarm and press ENTER button to confirm
6. For most accurate results – Charge the battery to full with any multi-stage battery charger
7. Disconnect the battery charger when the battery is full
8. Unit is ready to use
SPECIFICATIONS

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BATTERY GUAGE USER INTERFACE
Main Menu
To enter into the main menu press the menu button on the display screen. To move through
the menu press the up and down buttons. Press the Enter button to change the settings.
Default Screen
MENU
Battery Settings
Alarm Settings
Display On Time Settings
Brightness
Exit
Function Description
Battery Settings Set Battery Capacity
Alarm Settings Set Low Battery Capacity and Battery Health Alarms
Display On Time Settings Set the LCD Display On Time (10 mins as default on time)
Brightness Set the brightness of the LCD Display (50% as default value)
Exit Exit Menu Screen and return to Default Screen
Time Remaining
6.5 A
12.5 V
120.0 hrs
100%
5:30pm
Time To Full
+ 6.5 A
12.5 V
5.0 hrs
70%
Battery Charging
Battery Voltage
Battery State:
Charging, Discharging
Battery Current
Lightning sign as
charging Indication
Time to Full when the battery is
charging, Time to Empty when the
battery is discharging, or Dipslay
“System Idle” when no current
passes through the battery
Battery State of Charge
(SOC) in %
Battery Symbol Colour:
Green – 50% < SOC <100%
Orange – 20% < SOC <50%
Red – SOC < 20%

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5:30pm
100%
Time Remaining
Battery Capacity
GOOD
Battery Health
120.5 hrs
100.0Ah
6.5A12.5 V
70%
Time To Full
Power Remaining
GOOD
Battery Health
5.5 hrs
100.0Ah
+ 6.5 A12.5 V
Battery Charging
ADVANCED SCREEN
BATTERY SETTINGS
Use Up and Down buttons to choose your battery type which is marked on the battery case.
Press ENTER button to apply the changes. The default type is AGM.
Battery Voltage
Battery Capacity
Battery Current
“+” for Charging and
“–“ for Discharging
Time to Full when the battery is
charging, Time to Empty when the
battery is discharging, or Dipslay
“System Idle” when no current
passes through the battery
Battery State of
Charge in %
Lightning sign as
charging Indication
Battery Symbol
Colour:
Green – 50% < SOC
<100%
Orange – 20% < SOC
<50%
Red – SOC < 20%
Battery Health has
4 levels: Ideal, Good,
Fair and Poor
Battery State:
Charging,
Discharging

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Use Up and Down buttons to change the value of battery capacity which is marked on the
battery case. Press ENTER button to apply the changes. The default value is 100Ah.
ALARM SETTINGS
LOW BATTERY CAPACITY
Use Up and Down buttons to change the value of low battery capacity alarm. Reduce the
value to 0 to disable the alarm. Press ENTER button to apply the changes. The default value
is 10Ah.
When the battery depletes its capacity to the set level, an audio alarm is activated. The
audio alarm can be muted by pressing any button.

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BATTERY STATE OF HEALTH
Use Up and Down buttons to change the value of battery state of health alarm. Reduce the
value to 0 to disable the alarm. Press ENTER button to apply the changes. The default value
is 30%.
The battery state of health diminishes to the set level, an audio alarm is activated. The
audio alarm can be muted by pressing any buttons.
DISPLAY ON TIME SETTING
Use Up and Down buttons to change the LCD display on time. Press ENTER button to apply
the changes. The default value is 10 mins.

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BRIGHTNESS
Use Up and Down buttons to change the brightness of LCD display. Press ENTER button to
apply the changes. The default value is 50%.
BATTERY HEALTH
It is an indicator to show if the battery requires rejuvenation or replacement.
Indication Description
Ideal or Good No action is needed
Fair Try to rejuvenate the battery
Poor Try to rejuvenate the battery as soon as possible. If the battery health
indicator is still Poor after rejuvenation, the battery is close to its end
of life, replace the battery as soon as possible

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FREQUENTLY ASKED QUESTIONS
Q.What is state of charge (SOC)?
A. It is the remaining battery capacity expressed as a percentage of full charge capacity.
Q.What is State of Health (SOH) or Battery Health?
A. It is expressed as a percentage of the ratio of predicted full charge capacity over the design
capacity. The BM320 uses 4 levels to represent the battery health: Ideal, Good, Fair and Poor.
Please look at the battery health section for more detail.
Q.What is the low battery capacity alarm for?
A. The unit uses audio alarm to remind the user that the battery capacity is reduced to the set level.
Q.What is the battery health alarm for?
A. The unit uses audio alarm to remind the user that the battery state of health is reduced to
the set level.

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NOTES

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NOTES

Distributed by
AUSTRALIA
Brown & Watson International Pty Ltd
Knoxfield, Victoria 3180
Telephone [phone]
Facsimile [phone]
National Toll Free 1800 113 443
NEW ZEALAND
Narva New Zealand Ltd
22–24 Olive Road
PO Box 12556 Penrose
Auckland, New Zealand
Telephone [phone]
Facsimile [phone] IS370
Issue 10 .05.17
WARRANTY STATEMENT
APPLICABLE ONLY TO PRODUCT SOLD IN AUSTRALIA
Brown & Watson International Pty Ltd of 1500 Ferntree Gully Road, Knoxfield, Vic.,
telephone [phone], fax [phone], warrants that all products described in
its current catalogue (save and except for all bulbs and lenses whether made of glass or
some other substance) will under normal use and service be free of failures in material and
workmanship for a period of one (1) year (unless this period has been extended as indicated
elsewhere) from the date of the original purchase by the consumer as marked on the invoice.
This warranty does not cover ordinary wear and tear, abuse, alteration of products or
damage caused by the consumer.
To make a warranty claim the consumer must deliver the product at their cost to the original
place of purchase or to any other place which may be nominated by either BWI or the retailer
from where the product was bought in order that a warranty assessment may be performed.
The consumer must also deliver the original invoice evidencing the date and place of
purchase together with an explanation in writing as to the nature of the claim.
In the event that the claim is determined to be for a minor failure of the product then
BWI reserves the right to repair or replace it at its discretion. In the event that a major
failure is determined the consumer will be entitled to a replacement or a refund as well as
compensation for any other reasonably foreseeable loss or damage.
This warranty is in addition to any other rights or remedies that the consumer may have
under State or Federal legislation.
IMPORTANT NOTE
Our goods come with guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and compensation for
any other reasonably foreseeable loss or damage. You are also entitled to have the goods
repaired or replaced if the goods fail to be of acceptable quality and the failure does not
amount to a major failure.