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Voltage Sensing Split Charge Relay System


Add a leisure battery to your Vivaro/Trafic


  • Our easiest install split charge kit, with just 4 wires to connect.
  • Complete with clear, comprehensive fitting instructions.
  • Automatically allows the leisure battery to be charged only when the engine is running.
  • Avoid flattening your leisure battery.


This kit is not suitable for vehicles fitted with a smart alternator. Not sure if you have a smart alternator? Check out our blog for a test to find out. 



Product description


This kit will stop your leisure battery  power draw from draining the main vehicle battery, and allow you to charge your leisure battery from the alternator whilst the engine is running.


The wiring kit for the split charge is made with 16mm2 cables, fused to 100A.


The solid-state relay will open, allowing the current to flow between the two batteries, when one of the batteries is charging (above 13.7V) and it will disconnect the two batteries when the voltage drops below 12.8V.


The relay is bi-directional, so when charging your leisure battery from mains or the solar, the relay will click in and charge the main battery also. 


Not suitable for charging lithium batteries. 

Voltage Sensing Split Charge Relay System

VAT Included
    • Low - plastic packaging (just one bag that comes with the relay).
    • Simple installation
  • As standard

    • PPT Voltage sensing relay
    • Wiring kit to suit the selected length
    • 2 x 100A MTA fuse and holder
    • Leisure battery earth/negative strap

    With the fuse box option selected

    • All of the above components, plus
    • 12V 6-way fuse box or 12V 10-way fuse box
    • 60cm double insulated cable from leisure battery positive to fuse box. 

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