BM PRO CommLink BC300 User manual

TEAMBMPRO.COM
BC300
CommLink
EXTERNAL
SHUNT
OWNER’S MANUAL

POWERING YOUR ADVENTURES
With over 50 years’ experience in
power solutions combined with
manufacturing and design facilities in
Melbourne, Australia, BMPRO are the
leading experts in RV power and control
management.
Inspired by the great outdoors, we
have created a range of rugged, smart
and reliable products to power your
adventures.
Our range of battery, power and RV
management and control systems gives
you peace of mind when you are on the
road, so that you can relax in even the
most far flung destinations, knowing
you have control over your power
needs.
To learn more about the BMPRO range
of products, please visit our website
teambmpro.com
TEAM
BMPRO
.COM

4
SAFETY PRECAUTIONS
Please read the Safety Precautions before installing or using the BC300 External
Shunt and CommLink. Be sure to observe all precautions without fail. Failure to
observe these instructions properly may result in personal damage or personal
injury which, depending on the circumstances, may be serious and cause loss of
life.
WARNING
Correct installation is the most critical factor in ensuring the safe use of the device. If
every consideration of these instructions has been satisfied, the device will be safe to
operate.
Metal conducts electricity. Take care not to drop or touch metal objects onto the
battery terminals. If contact is made, this may cause short circuits or lead to serious
personal injury. Take care and remove unwanted metal objects from the vicinity of the
battery. Remove any personal metal adornment such as chain, watch or ring before
handling the battery.
Batteries are electrically live at all times and must be treated with extreme caution.
They can supply high short circuit currents, even if they appear damaged or
undamaged.
Do not drop or shake the product vigorously as this may cause damage to the product.
Do not shock the equipment, batteries and charger, as this may cause device or
battery failure, fire or explosion.
Keep the device dry; do not expose it to water. Do not use it where it can fall into water
(such as near a pool, pond, bath etc.). Do not let the device, battery or charger come
into contact with water vapour or operate it with wet hands. Contact with water will
cause the device to short-circuit, corrode or cause electric shock.
Do not use this product where it is excessively hot, cold, dusty or humid, or where it
is exposed to strong magnetic fields or long periods of sunshine. Such exposure may
cause device or battery failure, fire or explosion.
Only use the device with the cable supplied. Use of other accessories not
recommended in this manual may cause damage to the unit and will void the
warranty.
Clean the housing of the device lightly with a dry or moist cotton cloth if required. Do
not use alcohol, thinners, benzene or any other chemical cleaner.
This device is a high precision electronic product. It contains no user-serviceable
parts inside. Do not try to dismantle, modify or repair it yourself. Disassembly by
unauthorised persons will void the warranty.
Product specifications are subject to change and improve without notice.

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6
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . 4
ABOUT THE BC300 AND COMMLINK . . . . . . . . . . . . . . . . . 8
DESCRIPTION OF PARTS. . . . . . . . . . . . . . . . . . . . . . 9
BC300 EXTERNAL SHUNT. . . . . . . . . . . . . . . . . . . . . 9
COMMLINK . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INSTALLING THE BC300 AND COMMLINK . . . . . . . . . . . . . . 11
MOUNTING THE BC300. . . . . . . . . . . . . . . . . . . . . . 11
CONNECTING THE BC300 AND COMMLINK . . . . . . . . . . . . . . 11
PAIRING THE COMMLINK WITH THE BC300. . . . . . . . . . . . . . 12
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . 12
BC300 EXTERNAL SHUNT BATTERY INDICATORS . . . . . . . . . . . 13
COMMLINK STATUS INDICATORS. . . . . . . . . . . . . . . . . . 13
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 14
COMPLIANCE . . . . . . . . . . . . . . . . . . . . . . . . . 16
WARRANTY TERMS AND CONDITIONS (AUSTRALIA) . . . . . . . . . 18
LIMITED WARRANTY TERMS AND CONDITIONS (USA). . . . . . . . . 19
Designed by BMPRO, one of Australia’s leading power solution experts, the BMPRO product
range is proudly designed and manufactured in Melbourne, Australia, and represent a high-
quality product that will provide years of service.
DISCLAIMER: BMPRO accepts no liability for any loss or damage which may occur from the
improper or unsafe use of its products. Warranty is only valid if the unit has not been modified
or misused by the customer.
MANUAL PART 038572
REV 6.0
Copyright © 2023

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ABOUT THE BC300 AND COMMLINK
The BMPRO BC300 External Shunt and CommLink devices provide wireless
battery monitoring for high current BatteryPlus35 and J35 systems.
The addition of the BC300 External Shunt and CommLink to BP35 and J35
systems allows high current loads to be directly connected to the battery
via the BC300 External Shunt. This enhances the system behavior with
temperature monitoring of the battery for greater protection. It also maintains
Time Remaining and State of Charge determination of the battery even at high
currents and with directly connected loads.
The BC300 External Shunt is designed for 12V batteries up to 800Ah in capacity.
The shunt is rated for ±240A of continuous current and transmits monitored data
wirelessly.
The BC300 External Shunt monitors the following battery properties:
9Voltage
9Charging/discharging current
9Energy usage (Ah)
9Temperature
NOTE:When installing the BC300 External Shunt a direct connection to the
battery is required.
The CommLink provides wireless reception of the battery data transmitted
by the BC300 External Shunt. Data received by the CommLink is forwarded to
the CAN communication bus for reception by a BatteryPlus35 or J35. The CAN
communication bus also provides operating power for the CommLink.
The CAN communication bus can also be used to connect to a BMPRO Battery
Monitor, such as the BMPRO Odyssey or Trek3.

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1. NEGATIVE BATTERY CONNECTION
2. NEW NEGATIVE TERMINAL CONNECTION
Connects to the load.
NOTE: This terminal has flat sides.
3. ‘+’ POSITIVE FLYING LEAD AND TEMPERATURE SENSOR
4. LED STATUS INDICATOR
DESCRIPTION OF PARTS
BC300 EXTERNAL SHUNT
3
2
1
4

10
Trek3 BatteryPlus35-II OdysseyLink
ControlNode
RVView2
J35
Battery
Monitors
Battery
Management
Systems
Nodes
5. CAN BUS SOCKETS
Used to connect to other BMPRO devices, such as the BatteryPlus35 or J35, or
BMPRO Battery Monitors such as the BMPRO Odyssey or Trek3.
6. RECESSED STATUS INDICATOR
7. RECESSED PAIR BUTTON
COMMLINK
All
negatives
→
CAN
Cable
5 6 7

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MOUNTING THE BC300
The BC300 External Shunt has two mounting terminals. Using these terminals,
the BC300 External Shunt is wired in series with the negative terminal of the
battery being monitored and the negative battery loads.
The ‘+’ flying lead provides a connection to the positive terminal of the battery to
power the BC300 External Shunt. This lead is also used to measure the battery
temperature and voltage and must be directly connected to the positive terminal
of the battery.
You must ensure that all loads connected to the battery are disconnected or
turned off before beginning the installation to avoid sparks being generated.
INSTALLING THE BC300 AND COMMLINK
CONNECTING THE BC300 AND COMMLINK
To connect the BC300 External Shunt and CommLink:
1. Remove all the connections to the battery.
2. Connect the CommLink to the BatteryPlus35 or J35 CAN bus with the
provided CommLink data cable.
The data cable can be plugged into either CAN bus socket on the CommLink.
3. Connect the negative battery connection to the battery negative terminal
using the connector provided or directly to the battery.
NOTE: It is important that the correct terminal on both the battery and the
BC300 External Shunt is used.
4. Connect all negative load connections to the new negative terminal
connection on the BC300 External Shunt.
5. Connect all positive load connections including the BC300 External Shunt’s
positive flying lead to the battery positive terminal.

12
PAIRING THE COMMLINK WITH THE BC300
Once all positive load connections, including the BC300 External Shunt’s positive
flying lead have been connected to the battery positive terminal, the BC300
External Shunt will enter pairing mode, shown with a flashing blue LED.
Pairing mode will last for two minutes after it has been powered. The BC300
External Shunt and CommLink must be paired together in this time.
NOTE: If the CommLink status indicator is flashing green at 5 second internals, it
is already paired and is receiving data from the BC300 External Shunt. No further
action is required.
To pair the BC300 External Shunt with the CommLink:
1. With a pen or similar make a short press on the CommLink pair button.
This will initiate the pairing between the CommLink and the BC300 External
Shunt.
2. The CommLink status indicator will start flashing blue. Watch the CommLink
status indicator while the pairing is occurring.
It may take up to one minute for the pairing to complete.
If the pairing is successful the CommLink status indicator start flashing green at
5 second intervals. The CommLink is now paired with the BC300 External Shunt
and is receiving data.
TROUBLESHOOTING
CommLink Does Not Pair with the BC300 External Shunt
If pairing with the BC300 External Shunt fails, the CommLink status indicator will
return to flashing orange. If this happens:
1. Disconnect the BC300 External Shunt’s positive flying lead from the battery
positive terminal.
Once these connections are made the BatteryPlus35 or J35, the BC300 External
Shunt and CommLink will be powered and will enter pairing mode.
For information on pairing the BC300 External Shunt with the Commlink, refer to
Pairing the BC300 with the CommLink.
Connecting the BC300 to a Parallel Battery Installation
When connecting the BC300 to a parallel battery installation, the earth strap that
links the batteries together must remain on the battery terminals, and must be
located on the negative battery connection side of the BC300.
The new negative terminal connection side is for loads and charge sources only.

13
2. Reconnect the BC300 External Shunt’s positive flying lead from the battery
positive terminal.
3. Repeat the pairing process.
If you have multiple pairing failures, try installing the CommLink closer to the
BC300 External Shunt, or identify possible interference sources. This may
require a longer data cable to locate the CommLink closer to the BC300 External
Shunt.
CommLink Status Indicator is Flashing Red
If the CommLink Status Indicator is flashing red, it is paired to a BC300 External
Shunt but is not receiving data. The CommLink must be re-paired.
4. Hold down the CommLink pair button with a pen or similar.
5. Wait for the status indicator to change from red to orange. This should take 5
seconds.
6. Pair the CommLink with the BC300 again.
COMMLINK STATUS INDICATORS
BC300 EXTERNAL SHUNT BATTERY INDICATORS
LED COLOUR STATUS
Available for pairing
Normal operation
One or more battery fault conditions detected:
9Voltage below 8V or above 16V
9Battery current exceeding ±300A
9Battery temperature outside -20°C to 70°C range
9BC300 External Shunt temperature outside operating limits
LED COLOUR STATUS
Not paired
Pairing
Normal operation
Not receiving data from the BC300 External Shunt

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SPECIFICATIONS
GENERAL SPECIFICATIONS BC300 EXTERNAL
SHUNT COMMLINK
Input Voltage 8V to 16V
Quiescent Current Drain (average) <10mV <20mV
Operating Temperature -20 to 70°C
Humidity Operating ≤ 85% RH non-condensing
Humidity Non-operating ≤ 95% RH non-condensing
Dimensions (Approx.) 140 x 65 x 18.6mm 92 x 52 x 25mm
Weight (Approx.) 1kg 150g
IP Rating IP54 IP30
BATTERY MONITORING SPECIFICATIONS
Voltage Range 8V to 16V
Voltage Resolution <20mV
Current Resolution <200mA
Current Range 240A continuous
Overload Protection (100ms without damage) ± 800A
Temperature Range (Battery Terminal) -20 to 70°C
Temperature Resolution 3°C
Capacity Range 7 to 800Ah

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COMPLIANCE
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna,
• Increase the separation between the equipment and receiver,
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected,
• Consult the dealer or an experienced radio/TV technician for help.
Warning: Any changes or modifications not expressly approved by BMPRO could void the user’s
authority to operate this equipment.

17

18
WARRANTY TERMS AND CONDITIONS (AUSTRALIA)
Registering your BMPRO product is an important step to ensure that you receive all the benefits
you are entitled to. Please visit teambmpro.com to complete the online registration form for
your new product today.
1. BMPRO goods come with guarantees that cannot be excluded under Australian Consumer
Law. You are entitled to a replacement or refund for major failure and for compensation for
any reasonably foreseeable loss or damage. You are 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. The benefits under this Warranty are in addition to your other rights and
remedies under a law in relation to the goods to which this Warranty relates (the Australian
Consumer Law).
2. BMPRO warrants products against defects for a period of two years, commencing from the
original date of purchase. Proof of purchase is required before you can make a claim under
this warranty.
HOW TO PROTECT YOUR RIGHTS UNDER THIS WARRANTY
3. The BC300 External Shunt and CommLink is designed to be installed by a suitably qualified
installer. You or your installer should carefully inspect the products before installation for
any visible manufacturing defects. We accept no responsibility in addition to our consumer
guarantee obligations where a product has been installed incorrectly.
4. This warranty does not extend to product failures or defects caused by, or associated with,
but not limited to: failure to install or maintain correctly, unsuitable physical or operating
environment, accident, acts of God, hazard, misuse, unauthorised repair, modification or
alteration, natural disaster, corrosive environment, insect or vermin infestation and failure
to comply with any additional instructions supplied with the product.
5. BMPRO may seek reimbursement of any costs incurred by BMPRO when a product is found
to be in proper working order or damaged as a result of any of the warranty exclusions
mentioned in point 4 of this statement.
6. To enquire or make a claim under this warranty, please follow these steps:
A. Prior to returning a BMPRO product, please email serv[email protected] to obtain a
Return Material Authorisation (RMA) number
B. Package and send the product to:
BMPRO Warranty Department
19 Henderson Road
Knoxfield, VIC 3180
Please mark RMA details on the outside of the packaging.
C. Please ensure the package also includes: a copy of the proof of purchase, a detailed
description of the fault and your contact details including phone number and return address.
7. BMPRO will not be liable for any costs, charges or expenses incurred in the process of
returning a product in order to initiate a warranty claim.

19
LIMITED WARRANTY TERMS AND CONDITIONS (USA)
Registering your BMPRO product is an important step to ensure that you receive all the benefits
you are entitled to. Please visit teambmpro.com to complete the online registration form for
your new product today.
What this Limited Warranty Covers
This warranty covers any defect or malfunction in your BMPRO product. Under this warranty
you are entitled to have such goods replaced, repaired or refunded.
What this Limited Warranty Does Not Cover
• This warranty does not extend to product failures or defects caused by, or associated with,
but not limited to:
• Failure to install or maintain correctly, unsuitable physical or operating environment,
accident, acts of God, hazard, misuse, unauthorized repair, modification or alteration,
natural disaster, corrosive environment, insect or vermin infestation and failure to comply
with any additional instructions supplied with the product.
• BMPRO may seek reimbursement of any costs incurred when a product is found to be in
proper working order or damaged as a result of any of the warranty exclusions listed above.
• BMPRO will not be liable for any costs, charges or expenses incurred in the process of
returning a product to initiate a warranty claim.
How Long the Warranty Lasts
BMPRO warrants products against defects for a period of two years, commencing from the
original date of purchase.
Claims Process
Proof of purchase is required before the product can be deemed to be within the warranty
period.
To enquire or make a claim under this warranty, please follow these steps:
A. Prior to returning a BMPRO product, please email serv[email protected] to obtain a
Return Material Authorisation (RMA) number.
B. Package and send the product to:
BMPRO WARRANTY DEPARTMENT
UNIT 1 821 E WINDSOR AVE
ELKHART IN 46514
Please mark RMA details on the outside of the packaging.
C. Please ensure the package also includes: a copy of the proof of purchase, a detailed
description of the fault and your contact details including phone number and return address.
How State Law Applies
This warranty gives you specific legal rights, and you may also have other rights which vary
from state to state.

POWERING YOUR ADVENTURES.
BMPRO
customerserv[email protected]
19 Henderson Rd, Knoxfield VIC 3180 Australia | Unit 1, 821 E Windsor Ave, Elkhart IN 46514 USA
teambmpro.com
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BMPRO
.COM