Lithium Compatible Power Management System

This product is specifically designed for and exclusively supplied in a range of Jayco recreational vehicles.



  • 14 x 12VDC outputs
  • 35A maximum output current
  • 30A maximum charging current
  • Solar 28 Amp
  • Lithium (LiFePO4) compatible


SmartConnect Ready




Lithium compatible Power Management System for comfortable camping off the grid

J35 Model D is lithium compatible Power Management System specifically designed for Jayco Australia. It features a built-in solar regulator and a multi-stage battery charger to ensure long battery life.

Use J35D to charge all types of lead acid batteries as well as lithium (LiFePO4) batteries. J35  allows charging of battery banks of up to 600Ah in capacity.

J35D allows you to charge the caravan battery to the optimal charge level from 230-240 Volt mains, your solar panel (28 Amp, or three panels 450W total), or from any auxiliary input, such as a power generator or your vehicle.

J35D will increase the life span of your battery thanks to the multiple battery protection features, such as low voltage disconnect, storage mode and multistage charging.  There are 14 outputs to connect your DC appliances, including hot water, water pump, lights, and many more. Built in electronic fuses protect the loads.

Offered as an option in a range of Jayco caravan models,  the J35D can recover and charge a heavily discharged LiFePO4 battery. The internal Power Management System (BMS) of a LiFePO4 battery will turn off if it detects that the battery is heavily discharged. The J35D will provide the voltage to restart the LiFePO4 battery’s BMS and then commence charging of the LiFePO4 battery.

Pair J35D with the monitor, such as JControl, or a JHub app, to monitor your caravan power and control its functions.

We recommend using the J35D Power Management System with BMPRO Invicta Lithium batteries.


Input Voltage Range

240V AC ± 10% (nominal), 50-60Hz

Input Surge

<40A (cold start)

Output Current

35A (load + battery current)

Factory Set Voltage

13.65V ± 0.1V (float voltage)

Output Ripple Voltage


Overvoltage Protection


Overcurrent Protection


Battery Current Limit


Low Voltage Disconnect

Lead-acid: 10.5 ± 0.2V

LiFePO4: 11.5 ± 0.2V

Battery Drain

<8mA (when in Storage Mode)

AC/DC Efficiency


Cooling Fan


Solar Input Current


Solar Input Voltage


Ambient Temperature

0°C to 50°C




307mm x 206mm x 68mm




The J35D features an in-built solar regulator. You can connect the positive and negative leads from your an unregulated 12V solar panel directly to the solar input on your J35D.

If you have a regulated solar panel, it cannot connect to the J35D. It must be connected to your battery.

The solar card within theJ35D will limit the maximum input to ensure your batteries do not become overcharged. It is safe to have solar system that can product slightly more power than the maximum solar input on the J35D. If the watts are exceeded, it will shut the solar down for approximately 2 minutes. Then, turn it back on once the wattage has dropped back under the input.