Power Management System


  • Total output current 35A
  • 20A multistage battery charger
  • Inbuilt solar PWM regulator (240W, 20A, 25V max input)
  • Distribution board with 12 at 10A and 2 at I5A DC outputs for load connection
  • Electronic resettable fuses
  • CAN bus connection for BMPRO accessories
  • Solar and Aux Blending
  • Auxiliary DC input
  • Load current limit
  • Low voltage disconnect
  • Compatible with AGM, Wet, Gel deep cycle batteries

SmartConnect Ready



All-in-one Power Management System for your caravan

BatteryPlus35-II-SI is a complete Power Management System designed specifically for recreational vehicle applications. This all in one power solution combines a 35A power supply for 12V loads, 20A multi-stage AC charging and 20A Solar PWM regulation as well as a host of battery protection features. For more robust solar capability, choose a BatteryPlus35-II-SR  with an inbuilt 30A Solar MPPT regulation.

Connect the unit via CAN bus to the Trek battery monitor or to Odyssey touch screen via the OdysseyLink to monitor the status of your battery and to control your caravan features and functions or use it to connect to the BC300 to monitor high currents via CommLink.

Connect solar panels to the solar Power Management System and power your adventures with renewable energy.

BatteryPlus35-II-SI is pre-cabled with a permanent mains power supply cord for use with 240V or 110V input power – great for powered sites.

The unit also features a 40A rated uncontrolled +BRK battery output. This output is specifically designed for loads which do not need to be isolated or have a current rating of higher than the inbuilt circuit protection of the individual outputs and have a current rating less than 40 A.

Use it to connect, for example:
Proactive Electronic Stability Control SwayControl
Emergency Trailer Break-Away Safety System TrailSafe
• Heaters
• Stereo memory

For Lithium Ion batteries, check BatteryPlus-II-HA high amperage Power Management System featuring a charger with lithium profile.


Input Voltage Range

110V - 240V AC ± 10%, 50-60Hz

Input Surge

<40A (cold start)

Output Current (Load + Battery Current)


Factory Set Voltage (Float Voltage)


Output Ripple Voltage


Battery Current Limit

max. 20A

Low Voltage Disconnect

10.8V ± 0.2V

Battery Connect after LVD

12.8V ± 0.2V

Battery Drain (when in Storage Mode)


AC/DC Efficiency


Cooling Fan

Digitally controlled

Maximum Solar Input


Solar Output Current

Max 20A

Solar Start Voltage


Solar Input Voltage (After Start-up)


Ambient Temperature

0°C to 50°C




327mm x 207mm x 82mm




Safety: AS/NZS 60335.2.29, UL 458, UL 1741
Approvals: RCM, UL, FCC


The BatteryPlus35-II-SI is a 20A charger.

If your BatteryPlus35-II-SI 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.