BM PRO J35B-L User manual

TEAM
BMPRO
.COM
J35 ControlNode
FOR MODELS J35AJ35B-L J35D

TEAM
BMPRO
.COM
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 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

4
WARNING
Correct installation is the most critical factor in ensuring the safe use of the J35 and
ControlNode. If every consideration of these instructions has been satisfied, the J35 and
ControlNode will be safe to operate.
This product is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning the use of the appliance by a person responsible
for their safety.
Children shall not play with this product. Cleaning and user maintenance should not be
performed by unsupervised children.
Ensure that the product is well ventilated and that if the product has a fan, the fan is not
covered or obstructed.
Metal conducts electricity. Take care not to drop or touch metal objects onto the battery
terminals, which if contacts the battery terminals, could cause short circuits and may lead to
serious personal injury. Take care and remove unwanted metal objects from the vicinity of
the battery and the J35. Remove any personal metal adornment such as chain, watch or ring
before handling the battery and J35.
Do not attempt to charge non-rechargeable batteries. Charging a non-rechargeable battery
may result in the battery catching fire or possible explosion.
Do not replace a damaged mains power cord. If the power cord is damaged, the product must
be discarded.
Batteries are always electrically live and must be treated with extreme caution. They can
supply high short circuit currents, even if they appear damaged or undamaged.
Before servicing a battery, disconnect the power supply from all power sources.
Only charge battery types which are supported by this charger (see “Compatible Battery
Types”)
Do not allow water or other liquids to enter the power supply area.
Do not drop or vigorously shake the product as this may cause damage. Do not shock the
product, its accessories or batteries as this may cause the product or battery to fail, catch fire
or explode.
Stay away from magnetic equipment. Radiation may erase the information stored on this
product causing it to become inoperative.
SAFETY PRECAUTIONS
Please read the Safety Precautions before installing or using the J35 and
ControlNode. 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.

5
Please note that your battery can only reach top performance level only after it has been fully
charged and discharged two or three times.
Electricity and water do not mix. Keep this product and your battery dry and do not expose it
to water or water vapour. Do not operate this product or battery near any sort of liquid. Do not
operate this product with wet hands.
Do not use this product in environments that are excessively hot, cold, dusty or humid or
where it will be exposed to magnetic fields or long periods of sunshine. Such exposure may
cause the product or your battery to fail, catch fire or explode.
Only use this product with the supplied power cable and with batteries or accessories
recommended in this manual. Use of other batteries or accessories not recommended in this
manual may cause damage to the unit and will void the warranty.
The J35 and ControlNode is a high precision electronic product. It contains no user-
serviceable parts inside. Do not try to dismantle, modify or repair it yourself. Disassembly,
service or repair by an unauthorised person will void the warranty.
The J35 and ControlNode is a high precision electronic product. It contains no user-
serviceable parts inside. Do not try to dismantle, modify or repair it yourself. Disassembly,
service or repair by an unauthorised person will void the warranty.
Before using this product, check that cable connections to the battery are of correct polarity.
To protect against accidental short circuit, ensure that the shrouding supplied with the
batteries are always fitted to the battery terminals.
Consult caravan dealer or qualified personnel before servicing your battery.
Do not install this product in the same compartment where flammable materials, such as
petrol is stored.
Product specifications are subject to change and improve without notice.
WARNING

6
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . 4
ABOUT THE J35 . . . . . . . . . . . . . . . . . . . . . . . . 8
OPTIONAL ACCESSORIES. . . . . . . . . . . . . . . . . . . . .8
COMPATIBLE BATTERY TYPES . . . . . . . . . . . . . . . . . . .9
DESCRIPTION OF PARTS. . . . . . . . . . . . . . . . . . . . . 10
J35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CONTROLNODE. . . . . . . . . . . . . . . . . . . . . . . . 14
INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . 15
MOUNTING THE J35 . . . . . . . . . . . . . . . . . . . . . . 15
MAINS CABLE . . . . . . . . . . . . . . . . . . . . . . . . 15
CONNECTING A BATTERY TO THE J35 . . . . . . . . . . . . . . . 16
DISCONNECTING A BATTERY FROM THE J35 . . . . . . . . . . . . 17
CONNECTING MULTIPLE BATTERIES . . . . . . . . . . . . . . . 18
USING YOUR J35 . . . . . . . . . . . . . . . . . . . . . . . . 19
BATTERY CHARGING AND MANAGEMENT WITH THE J35 . . . . . . . 19
SLEEP MODE . . . . . . . . . . . . . . . . . . . . . . . . . 20
STORAGE MODE . . . . . . . . . . . . . . . . . . . . . . . 20
USING THE J35 AS A POWER SUPPLY . . . . . . . . . . . . . . . 21
FAULT PROTECTION . . . . . . . . . . . . . . . . . . . . . . 21
Copyright © 2021
MANUAL PART 037134
REV 9.0
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.

7
PAIRING WITH THE CONTROLNODE . . . . . . . . . . . . . . . . 22
SERVICING, MAINTENANCE AND STORAGE . . . . . . . . . . . . . 23
SERVICING. . . . . . . . . . . . . . . . . . . . . . . . . . 23
SERVICEABLE FUSES . . . . . . . . . . . . . . . . . . . . . 23
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 23
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . 23
FAQS AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 24
JHUB APP . . . . . . . . . . . . . . . . . . . . . . . . . . 24
BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . 24
CARAVAN LOADS . . . . . . . . . . . . . . . . . . . . . . . 24
CONTROLNODE. . . . . . . . . . . . . . . . . . . . . . . . 26
APPENDICES . . . . . . . . . . . . . . . . . . . . . . . . . 27
J35 OPERATIONAL STATUS INDICATOR . . . . . . . . . . . . . . 27
BATTERY CHARGING MANAGEMENT ALGORITHM . . . . . . . . . . 28
CHARGING MODES . . . . . . . . . . . . . . . . . . . . . . 29
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 30
WARRANTY TERMS AND CONDITIONS . . . . . . . . . . . . . . . 31

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FEATURE J35A J35B-L J35D
Load Connections 7 14 14
Maximum Current Output 20A 35A 35A
Maximum Charging Current 15A 30A 30A
Solar Input 300W 450W
Mobile Device + JHub App ¹
Lithium Compatible² 
Table 1: Comparison of features for the models in the J35 + ControlNode range
¹ Requires ControlNode102 or later.
² LiFePO4 only.
ABOUT THE J35
BMPRO’s range of J35 battery management systems management system are
specially designed to be fitted in Jayco caravans.
The J35 operates from 240V AC mains power supply, towing vehicle auxiliary
and solar panels to simultaneously power caravan loads and charge the
caravan battery.
The J35 employs intelligent charging algorithms, ensuring optimal battery
health. Automatic battery preservation mode saves remaining battery power
until you’re ready and able to charge.
Download the JHub App to your mobile device and with the ControlNode, enjoy
the freedom to monitor your caravan battery and operate caravan onboard
features, all from your own personal mobile device.
The J35 is available in a range of models to suit any RV and battery
management need.
OPTIONAL ACCESSORIES
To get the most from your J35 it may be used with the following products (sold
separately) from the BMPRO range:
9BC300 + CommLink External Shunt for integration of additional accessories
and high current loads such as inverters
9JControl or JHub Battery Monitors
9MiniBoost and MiniBoost Pro DC-to-DC chargers.

9
COMPATIBLE BATTERY TYPES
All J35 models are compatible with lead acid batteries:
9Valve-Regulated (VRLA)
9Absorbed Glass Mat (AGM)
9Gel
The J35B-L and J35D are also compatible with lithium LiFePO4 batteries.
By default, the J35B-L is configured to charge lead acid batteries, and the J35D
is configured to charge LiFePO4 batteries.
WARNING
Ensure you check your battery configuration before use.

10
Figure 1: The J35
DESCRIPTION OF PARTS
eLOAD TERMINAL BLOCK – POSITIVE CONNECTION
Positive wire connection point for the caravan’s 12V loads.
To control loads from the JHub App, each load must be connected to the correct
terminal. Terminals are labeled according to their designated load output.
wLOAD TERMINAL BLOCK – COMMON NEGATIVE CONNECTION
Negative wire connection point for the caravan’s 12V loads.
J35A TERMINAL/LOAD CURRENT
RATING J35A TERMINAL/LOAD CURRENT
RATING
1-Stereo 15A 5-Lights/Spare 10A
2-Spare 15A 6-Lights/Spare 10A
3-Pump 10A 7-Lights/Spare 10A
4-HWS 10A
Table 3: J35A designated terminal-load outputs for the load terminal block-positive connection
qMAINS CABLE
The J35 is pre-cabled with a permanent mains power supply cord. The AC mains
input is protected by a quick acting, high breaking capacity type fuse (rated
250V, 10A).
10
5
12
11
13
6789
1
4
3
2
J35

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J35B-L / J35D
TERMINAL/LOAD CURRENT RATING J35B-L / J35D
TERMINAL/LOAD CURRENT RATING
1-Slide-Out 15A 8-12V Outlet 1 10A
2-Spare 2 15A 9-12V Outlet 2 10A
3-Water Pump 10A 10-Spare 10 10A
4-Hot Water 10A 11-Spare 11 10A
5-Lights 1 10A 12-Spare 12 15A
6-Lights 2 10A 13-AirSusp ECU 10A
7-Lights 3 10A 14-Tablet 5A
Table 4: J35B-L and J35D designated terminal-load outputs for the load
terminal block-positive connection
Each output is protected by an internal, electronic, auto-recoverable fuse. This
eliminates the need for the user to replace a blown fuse. If an electronic fuse is
activated, the LED Status Indicator on the J35 will flash a solid red. The J35 will
power off the faulty load and resume normal operation once the fault is fixed.
rFAN
Regulates the internal temperature of the J35.
WARNING
To ensure continuous air-flow, the fan ventilation holes must never be blocked,
otherwise the temperature of the J35 may rise and inhibit the optimal operation of the
J35 and/or cause the J35 to shut down. The J35 will automatically restart once it has
cooled to an acceptable level.
WARNING
The Air Suspension output is not controlled by the Load Isolation Switch circuitry.
Engaging Load Isolation will not affect the operation of the caravan’s Air Suspension.
tLED STATUS INDICATOR
Indicates the operational status of the J35.
yAIR SUSPENSION OUTPUT (J35D)
Connection point to power the caravan’s air suspension.

12
oBATTERY FUSE
40A automotive battery fuse.
aSOLAR INPUT (J35B-L / J35D)
The J35B-L supports the use of panels up to a total of 300W and the J35D up to
450W. Input current to the solar regulator is limited to 20A (J35B-L, equivalent to
2x150W solar panels) or 27A (J35D, equivalent to 3x150W solar panels).
The solar input is unable to operate in Power Supply Mode, i.e. with no caravan
battery connected.
sAUXILIARY (AUX) INPUT
AUX input is designed for use with 12V DC power sources. The voltage of the DC
power source connected to the AUX input must not exceed 14.8V.
AUX will be available to charge the battery if the AUX voltage exceeds the battery
voltage by at least 0.5V.
uAIR SUSPENSION FUSE (J35D)
40A automotive air suspension fuse.
iBATTERY CONNECTION TERMINAL
Screw connection for the caravan’s battery.
WARNING
Do not connect the caravan battery’s negative terminal to caravan chassis or earth
ground point. Connecting the battery’s negative terminal to points other than the J35
negative Battery Connection Terminal (Batt-) may cause the battery to overheat and/
or overcharge.
WARNING
Not all DC-DC chargers in the market used to boost auxiliary charging voltage from
the towing vehicle are compatible with the J35.

13
dLOAD ISOLATION SWITCH
To connect the caravan’s load isolation switch. This switch is used to enter
Storage Mode and power off all outputs (load terminal block and CAN bus) on
the J35, except for the Air Suspension output.
Battery charging is not affected by use of the load isolation switch.
As the caravan loads are no longer powered, activating the load isolation switch
to enter Storage Mode is a convenient way to save remaining power of your
battery if you are on the road and have limited ability to charge the battery. When
charging, Storage Mode ensures that all available charging current is dedicated
to charging your battery.
fCAN BUS COMMUNICATION
To connect to and power BMPRO accessories, such as the ControlNode or BC300
+ CommLink.

14
CONTROLNODE
Figure 2: The ControlNode
1
32
qPAIRING BUTTON
Button to enable Bluetooth pairing between the ControlNode and the JHub App
on your own personal mobile device or JHub Tablet.
wLED STATUS INDICATOR
Indicates the operational/pairing status of the ControlNode.
Table 5: ControlNode Operational Status and LED Flash Codes
*After memory has been cleared, the ControlNode LED Status Indicator will flash green.
Operational Status Flashing Status Note
ControlNode is ready to pair Green Flash 30 sec
ControlNode memory is full,
cannot pair to any new devices
Orange Flash 1 sec To pair to a new mobile device, clear
the memory of the ControlNode
Clearing ControlNode memory* Red Flash 1 sec Memory will only be cleared if the
user presses and holds the Pairing
Button for 10 seconds.
eCONTROLNODE SERIAL NUMBER
Required to choose the correct device when pairing the ControlNode to the JHub
App on your own personal mobile device or JHub Tablet.

15
INSTALLATION INSTRUCTIONS
MAINS CABLE
The J35 is pre-cabled and fitted with a mains plug. Ensure that the connections
to the mains supply are in accordance with the national wiring rules, and that the
earth connection is installed.
The plug must be accessible during installation. If it is not possible, an
accessible mains disconnection switch must be incorporated in the mains wiring
where the plug is connected.
MOUNTING THE J35
The J35 should be securely mounted to a suitably rigid surface, using four pre-
drilled mounting holes.
The preferred orientation is with the load connection at the bottom.It is
recommended the mounting holes are located so that there is a minimum of
80mm free air space from all vented sides of J35. This allows for the lowest
operating temperature of the internal electronics and the highest reliability of
the product.
The final enclosure must provide adequate ventilation to the outside world
(or larger internal cavity) to prevent excessive heating of the air within the
enclosure.

16
WARNING
Before using a battery other than that which was installed at the caravan dealership,
consult with the battery manufacturer for a detailed description of the installation,
uses and maintenance of the battery. Verify that the type and capacity of the battery
or batteries used are compatible for use with the J35.
CONNECTING A BATTERY TO THE J35
To connect a battery to the J35:
1. Power off all loads connected to the J35. The simplest way is with the switch
connected to the J35 Load Isolation input.
2. Turn off and remove all power sources (mains/solar/AUX) to the J35.
3. Connect the battery’s positive (red) terminal to the J35 Batt+ connection
point.
4. Connect the battery’s negative (black) terminal to the J35 Batt- connection
point.
It is recommended that a 40A fuse is installed as close as possible to the
battery’s positive terminal to protect against short-circuits and reversed battery
connections.
WARNING
Sparks have the potential to cause an explosion should combustible gases be
present. The following procedures are designed to minimise the risk of spark
generation when connecting or disconnecting the battery. The positive terminal of
the battery must not be connected to the chassis.

17
DISCONNECTING A BATTERY FROM THE J35
To disconnect a battery from the J35:
1. Power off all loads connected to the J35, the easiest way is with the switch
connected to the J35 Load Isolation input.
2. Turn off and remove all power sources (mains/solar/AUX) to the J35.
3. Disconnect the battery’s negative (black) terminal from the J35 Batt-
connection point.
4. Disconnect the battery’s positive (red) terminal from the J35 Batt+
connection point.
WARNING
Do not install a battery in the same compartment where flammable material, such as
petrol, is stored.
Figure 3: Connecting a house battery to the J35
After fitting a new battery to the J35, make sure that it is configured in the JHub
App.
Correctly configuring the battery capacity and profile will ensure that the J35
will select the best charging parameters for the caravan battery in use, and the
software accurately estimates battery usage.

18
Figure 4: Recommended wiring for connecting batteries in parallel.
CONNECTING MULTIPLE BATTERIES
Before connecting multiple batteries in parallel to the J35, check that all
batteries are:
9Of the same type, for example, deep cycle AGM battery.
9Of the same capacity, for example, 100Ah.
9By the same manufacturer.
9Fully charged.
9Of the same age-never use batteries that differ in age.
The recommended wiring for connecting multiple batteries in parallel to the
J35 is given in Figure 4. Depending on system requirements, a qualified auto-
electrician may wire the batteries differently.

19
BATTERY CHARGING AND MANAGEMENT WITH THE J35
Input Power Sources
The J35 may be powered from mains, AUX or solar inputs to provide battery
charging current and power to caravan loads.
If mains and one or more other sources are available to the J35, the J35 will be
powered exclusively by the mains source.
If both AUX and solar inputs are available and the mains is not, the J35 will draw
power from both the AUX and solar inputs. As full charge approaches, one of
these sources may dominate the other as appropriate.
Battery Charging
The J35 can simultaneously deliver up to 20A (J35A) or 35A (J35B-L, J35D) to
the caravan battery and loads from the mains input source, with a maximum
charging current of 15A (J35A) or 30A (J35B-L, J35D).
The maximum charging current will be reduced if loads are drawing significant
current and as the battery approaches full charge. To ensure that the caravan
battery is charged by the maximum charging current, switch off non-essential
loads.
When charging the battery from mains, the J35 applies a multi-stage charging
process.
For charging from AUX and/or solar sources, the J35 monitors the battery
voltage level and charges as needed.
Battery Health Preservation
The J35 preserves battery health by preventing the battery from excessive
discharge. The J35 will start a two-stage shutdown or Low Voltage Disconnect
(LVD), powering down all J35 outputs except for Air Suspension. This is to
conserve remaining battery capacity until the battery can be charged.
USING YOUR J35
WARNING
The Air Suspension output is not affected by LVD and will remain operational
throughout. The remaining battery capacity will drain quickly if Air Suspension is
engaged while the J35 is in LVD.

20
The J35 will enter the two stages of LVD, Sleep Mode and Storage Mode, when
the caravan’s battery voltage falls below the LVD thresholds.
LVD MODE LEAD ACID LiFePO4 (J35B-L and J35D ONLY)
Sleep Mode 10.8V 12.0V
Storage Mode 10.5V 11.5V
Table 6: LVD Mode voltage thresholds
STORAGE MODE
When in Storage Mode, power to the CAN bus will be turned off, meaning there
will be no communication or power to the accessories connected to the J35 CAN
bus.
NOTE: The JHub Tablet (if in use) may continue to run on its internal battery for
some time.
To exit Storage Mode, start battery charging. The J35 will exit Storage Mode
when the battery is sufficiently charged. Upon exit of Storage Mode, the J35 will
not automatically return to its previous state of operation. Caravan loads will
need to be powered on manually.
When in Storage Mode you may temporarily turn on caravan loads by cycling the
caravan’s Load Isolation Switch.
SLEEP MODE
When in Sleep Mode, the J35 will provide power to the CAN bus. This allows you
to continue to monitor battery consumption from the battery monitor. However,
power to the load terminal block will be turned off and you will not be able to use
your battery monitor to power caravan loads.
To exit Sleep Mode, start battery charging. The J35 will exit Sleep Mode
when the battery is sufficiently charged. Upon exit of Sleep Mode, the J35 will
automatically return to its previous state of operation.
When in Sleep Mode you may temporarily turn on caravan loads by cycling the
caravan’s Load Isolation Switch. This allows you to retract slide-outs or electric
steps if you need to pack your caravan. This temporary switch on of the caravan
loads may also be done by pressing the Battery icon on your battery monitor.
Heavily Discharged Lead Acid Batteries
The J35 will not charge heavily discharged lead acid batteries.
In normal use, and with the J35 battery health preservation, batteries should
never become heavily discharged.