Support Centre

  • BatteryCheck

    The BatteryCheck is a simple and easy to install device that sets a new standard in RV battery management systems. This innovative product connects to a range of standard batteries and communicates wirelessly with your smart phone. The BatteryCheck provides real time battery management data that allows you to effectively manage remaining battery energy via an easy to use app.


    The BatteryCheck is designed for deep cycle batteries (also known as ‘house’ batteries) and as such should not be used on a starter battery. 

    As long as the battery system is not exceeding 100 amps peak or 80 amps continuous draw or charge then there is no problems using the BatteryCheck. Please note the BatteryCheck will monitor the whole system as opposed to the individual batteries and as such all negative connection on the batteries should go through the BatteryCheck. 

    Absolutely, the BatteryCheck will monitor the entire battery bank as one energy source and report on it. When installed in this manner the BatteryCheck should be wired on the common negative and all connections to the negative of the battery should go through the BatteryCheck. 

    There is no limit to the number of BatteryChecks your phone can report on, however you will only be able to connect to one BatteryCheck at any point in time, meaning you will need to connect your application to the relevant BatteryCheck you’d like to see each time. 

    Whilst the BatteryCheck is not officially compatible with the iPad you can connect using the same steps as the iPhone. Please note as the iPad is not a supported device there may be minor issues with the connection and reporting. 

    The BatteryCheck can be connected to your Android tablet using the same steps as an Android phone. Please consult your manual for a step by step guide. 

    Please get in contact with us to troubleshoot. If you are unable to do so then you may like to try disconnecting your BatteryCheck, forgetting the connection in your Bluetooth settings (on your smart device) then reconnecting- this will solve most connection issues. 

    At this stage the BatteryCheck is not supported on Windows operating systems. 

    The BatteryCheck is suitable for use with battery banks up to 800 Amp hours. 

    No, the BatteryCheck will monitor your battery bank as one energy source and report on it.  

    The BatteryCheck is installed on a battery bank in the same way as it is with a single battery however the BatteryCheck should be placed on the common negative of the bank and all negative connections made to the bank should be made through the BatteryCheck. 

    Yes, as long as the charger does not exceed 80 amps continuous or 100 amps peak charge. If the BatteryCheck is bypassed the charge will not be measured or reflected in your dashboard. 

    Quiescent Current Drain is < 10mAmp (found on page 8 of user manual). This would take over 10,000 hours to drain a typical 100 Ah battery. 

    The BatteryCheck is proudly designed, manufactured and sold from our Australian head office in Knoxfield Victoria.  

    Some budget phones currently on the market will operate differently with the BatteryCheck app, for further information please contact Team BM PRO.  

    Volts is only one indicator in a more complex equation – rather like measuring kilometres-per-hour (KPH) in a car. KPH will tell you how fast you’re going, but not how long you’ll be able to maintain a particular speed or if you have fuel in the tank to run it. The BatteryCheck will provide you with access to all of the information you need to complete the full picture, including charge state, battery status, amps, volts and remaining time. 


  • Drifter

    Designed specifically for caravan applications, the Drifter is a display unit that monitors water tank levels and 12 V battery charge state.



    If your Drifter is showing incorrect water tank level readings, please first verify that all tanks in use are activated.  This can be loctaed in the paramaters section of your user manual.  Next, you should reference the wiring diagram in the manual to assure that your wiring has been done correctly.  If problems persist, you should contact your local Jayco repair center for further options.  It should also be noted salt water, grey water, and detergents can affect the water tank level readings.

    The Drifter measures current going into and out of the battery via a shunt.  This information is then used to accurately estimate the remaining time and capacity of the battery. 

    You should remove the Drifter screen from the wall bracket by pushing the unit in and sliding up.  This will allow you to have access to two connector plugs at the back of the unit.  Disconnect these plugs and reconnect to reset the unit and then mount the Drifter screen back to the bracket.  If the problem persists, the Drifter loom connections to the battery will need to be checked (Refer to wiring diagram in manual).

    Yes, please ensure the resistance is 1mΩ ± 5%.

    In this situation, it is most likely that the shunt has been wired back to front.  No damage would have occurred from this, but you should contact your local Jayco service center to rewire this correctly.

    Please refer to page 11 of the Drifter manual for a step by step guide. To enter Set-up Mode press and hold the Home and Backlight buttons for at least five seconds. The table below shows which parameters can be set.

    Drifter Settings

    The Drifter does initially need to be taken through 2-3 full charge/discharge cycles of the battery.  Example: Connect your power supply/battery charger up to a 240v connection and fully charge the battery, leave on charge for 24 hours and then discharge your battery back down.  Repeat 2 - 3 times.  This allows the Drifter to know the minimum capacity and the maximum capacity of your battery.  Once this is completed, you will see accurate Time Remaining information from here on.

    No, the Drifter is not currently compatible for use with Lithium batteries.

    Volts is only one indicator in a more complex equation – rather like measuring kilometres-per-hour (KPH) in a car. KPH will tell you how fast you’re going, but not how long you’ll be able to maintain a particular speed or if you have fuel in the tank to run it. The Drifter will provide you with access to all of the information you need to complete the full picture, including charge state, battery status, amps, volts and remaining time. 


  • DrifterBM

    The DrifterBM is a revolutionary device that continuously monitors 12 Volt lead acid batteries. The DrifterBM is vital to making an accurate estimate of remaining battery charge and allows you to determine when a battery should be recharged or replaced. This product is a must-have device if you wish to understand your remaining battery time and the true health of your battery.


    Refer to Drifter FAQ's


  • Trek & BatteryPlus35

    The Trek and BatteryPlus35 combination combines a revolutionary battery management system designed to offer a complete power solution for recreational vehicles with a state of the art battery data display that can also measure water tanks levels.  Together, this combination can provide important information such as volts and camps, charge/discharge status and remaining capacity.


    The Trek has been designed to only function with the BP35 unit.  Although the BP35 can be used without the Trek monitor, the Trek cannot relay data on it's own.

    The BP35 and Trek system is a fully integrated Battery Management/Monitoring system.  It includes a battery charger, power supply, low voltage disconnect, 12 output distribution board (rated at 10 & 15 amps), built in solar regulator, electronically reset-able fuses, AUX connection (direct connection for Anderson plug), water tank monitoring and battery charging/discharging ratings.  The Trek unit can then display net amps, amps in from solar panels and amps in from AUX input whilst also controlling two water pumps.

    It is a 20 amp charger.

    If your BP5 unit has solar in built, the positive and negative leads from your solar panels are connected directly to the solar input and output on the solar distribution board.  The solar regulator is in built for this.


  • Genius

    The Genius is a revolutionary battery management system designed to offer a complete power solution for caravanning applications. Designed and manufactured in Australia, the slim and sturdy Genius is fully equipped to charge the current generation of deep cycle batteries.


    The Genius is compatible with all lead-acid batteries excluding ithium style batteries.

    The installation should be carried out be a suitably qualified electrician only.  We suggest you contact an auto-electrician or a caravan service center for further assistance.

    It is most likely that you have solar panels connected to your caravan if this is occurring and your battery is either full or nearly full.   In this situation the Genius is only required as a power supply and not a battery charger.  The red and green LED indicator flashing occurs when the battery voltage is higher than what the Genius requires.  Example: The input amps from the solar panels is high enough to power the caravan (based on current amperage draw).   There is no harm to the unit caused by this situation.  If you do not have solar panels connected, please contact us for further assistance.

    The Genius is proudly developed and manufactured at our head office in Melbourne - Australia, as is our whole range of BM PRO products.

    The Genius is a fully integrated battery charger and power supply the combines multiple key features into one unit.  The Genius is a power supply, a battery charger, and has an AC isolation switch, in built low voltage disconnect, a 10 circuit fuse board, auxiliary connection (direct connection for Anderson plug), battery fuse protection and low fuse protection.   Refer to Genius Overview diagram for further information

    Please refer to the below diagram.


    This is dependent on what model Genius you have.  For 15amp model: We recommend a battery bank up to 200amp hours.  For 30amp model: We recommend a battery bank up to 400 amp hours.&nbsp For further information on batteries and charging, please refer to the user manual.

    You can replace fuses but only with the recommended fuse rating and type.  Using the wrong fuse can cause over heating of the fuse board.

    You need to connect your solar panels via a regulator directly to the battery bank.  The Genius does not have a built in solar regulator and you should not connect any solar regulators to the Genius.

    You can connect any DV source that is 14.8 volts max.  Example: Anderson plug connection.  This input connects via an isolation diode directly to the fuse panel.  There i no current limiting provided for this input.  Any source connected to this must be current limited to lessen the battery fuse rating or the battery fuse may blow.


  • TrailSafe

    The TrailSafe is an effective power-assisted emergency trailer break-away system, which provides immediate application of trailer brakes in the event of an accidental detachment from the tow vehicle. Unlike other product, the TrailSafe utilizes the 'house' battery, meaning user's don't require a secondary battery and have to worry about maintaining it. This all in-one contact device also features a full system safety check at the tongue of the trailer, allowing users to test it's functionality at any given time.


    No, the TrailSafe connects directly to the house/main battery.  This means that no additional battery and no additional controller is required. 

    1. Remove the pin from the physical TrailSafe unit.  2. Once LED's have lit up, refer to LED chart below for reference.  3. If the voltage of your battery is sufficient, the TrailSafe is functional. 

    We strongly recommend that a trained auto electrician installs this product. 




    The JHub System is a tablet-driven 'control hub' and distribution system designed specifically for charging and managing your Jayco caravan's battery(s) 12V system, as well as controlling your Jayco caravan's onboard features. The system can operate from 240 VAC, the tow vehicle's 12V auxiliary supply or from Solar Panels (if installed).

    The JHub System's 'J35' is linked to, and powers, the ControlNode101 (CN101) via a CAN bus connection. The ControlNode101 provides a Bluetooth link to the JHub System Tablet and connection to the caravan's Slide-Out (where fitted) as well connecting to four tank sensors and internal ambient temperature.

    The JHub System combines the convenience of tether-free communications with the smarts of the BMPRO battery management system to make the most of your travels.


    There are multiple ways to charge your tablet. Depending on your vehicle type, most new model cars are fitted with a USB port – your tablet can be charged via this. Alternatively, you can use a Power Bank (not supplied) or a 12V to Micro USB charger (not supplied).

    The JHub is fitted with a unique control node (ControlNode101) that is designed to pair with your tablet only. For any device to gain access to this control node they would need to have access to the unique Bluetooth code provided to you. PLEASE KEEP YOUR CODE IN A SAFE SECURE PLACE.

    Not to worry. Simply re-load the app by downloading it from GooglePlay or iTunes. Simply go on line and visit one of these two links:


    Micro SD cards up to 64GB. FAT32, NTFS & exFat format.

    Applications are available via the GooglePlay Store or Apple iTunes

    Connecting via USB

    • 1. Connect the JHub Tablet’s USB charging cable to a spare USB port on your laptop or PC. *Note that the JHub Tablet mayl not work with Apple products.
    • 2. Connect the other end of the cable to the USB port on the JHub Tablet.
    • 3. If the JHub Tablet is powered-off, the screen will display a charging icon. If the JHub Tablet is powered-on, the battery icon in the top right corner of the screen will display a charging symbol.
    • 4. Once connected you will be able to navigate to ‘My Computer’ and view the tablet as a removable device, from here you will be able to drag and drop files.

    Yes, you can access all of the controls from both screens.

    The JHub App does not use data, everything is controlled and displayed via Bluetooth. Consequently, your JHub Tablet is not connected to a SIM card or mobile contract, relying solely on Wi-Fi to access any internet functions.

    Yes, the tablet has an inbuilt Wi-Fi adaptor.

    Since the Bluetooth connection is going thru a few walls deally you should be within 20mtrs or less of your device.

    The JHub’s dock is designed for travel. But in the case you find yourself on a very bumpy road, perhaps you’ll want to take it down and secure as you would with any other valuables.

    You should contact the service department at the place you purchased your caravan.


  • J35

    The J35 Series (exclusive to Jayco) are smart chargers for the JHub System with a distribution system designed for use in recreational vehicles. The units operate from 240 VAC mains and provide an isolated DC output. There are three variants under the J35 Series, they are:

    • 1. J35-A: 7 x 12VDC outputs, 20A maximum output current.
    • 2. J35-B: 14 x 12VDC outputs, 35A maximum output current.
    • 3. J35-C: (high-end variant, excluded in this Manual / FAQs)

    Though maximum output current is lower for the J35-A, charging current is the same for all variants and is limited to 15A. All the necessary protection and operating features for the load and battery (i.e. thermal protection, over current, over voltage, multi-stage charging, low-voltage disconnect, etc.) are provided.

    J35 uses electronic fuses to protect the loads. They are internally located and are not serviceable. Also available is a DC input which may be sourced from the 12V auxiliary system of the towing car. This input is an alternate of the AC mains to enable battery charging and powering of the load.

    For more info, see your local Jayco Dealer.


  • Downloads

  • General

    Commonly used terms

    A flat panel display, electronic visual display or video display that uses the light modulating of liquid crystals.

    A stopper for closing a hole in a container.

    Low-power radio communications up to 10 meters.

    Component consisting of two conductive surfaces separated by an insulator. Passes AC; indefinite resistance for DC; voltage lags behind the current (opposite of coil).

    Unit measuring the electrical charge in a capacitor (condenser), measured in farad (f).

    Energy drawn from a battery in one hour.

    Used in lead acid batteries to improve mechanical strengths of lead plates and enhances performance.

    Hard, lustrous and grey metal that is used in batteries, magnets and high-strength alloys.

    Current flowing in one direction. Often seen in a battery.

    Charge in coulombs necessary to change the potential between the plates of a capacitor by 1V.

    Electric energy potential per unit charge.

    Electrical insulator that passes ions.

    Exceeding charge acceptance. The battery heats up, produces gases and is subject to an evet.

    A self-contained program of piece of software on a mobile device designed to fulfil a particular purpose. Example: The BatteryCheck product has an app on your mobile device that allows the BatteryCheck to relay the conditions of the battery to a display screen on the app.

    The volume of electricity flowing through a conductor.

    A load draws energy from the battery. Internal battery resistance and depleting state-of-charge cause the voltage to drop. Physical work over time is energy measured in Watt-hours (Wh).

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