Site Information

shop by Category


 Loading... Please wait...
01765 688952
  • My Account
  • Order Status
  • Image 1

Voltage Sensing Split Charge Relay 12V / 30Amp

£12.00 (inc VAT) £10.00 (exc VAT)
Calculated at checkout

Product Description

Self switching split charge relay is used for charging a second battery from your main vehicle (crank) battery. This relay is voltage sensing in that it monitors the main battery voltage and monitors the second battery voltage and only switches the charge to the secondary battery on when required, so no over charging can take place and also ensures that the main battery charge is maintained and wont leave you with a flat. The relay also boasts thermal cut-off ability which auto resets, so no over heating of the relay is possible and auto voltage adjustment.

Safety First!

The most important part of a circuit is the FUSE! So make sure you install fuses with this relay. We supply 2 auto fuse holders & 2 auto fuses with the kit variation. Why? Double the protection! The 1st fuse point is installed a few inches away from the main battery positive and the second fuse point is installed a few inches away from the leisure battery positive. This give you double the protection in the event of a short circuit.

Suitable for any 12V negative earth vehicle, where a second battery needs to be charged

Example of use: If you install a second battery in your vehicle for running additional appliances and need it to be charged from your vehicles existing system. The relay kit is connected between the vehicles main battery (Positive) and the second battery (Positive). The relay controls the charge rate to the second battery to maintain a fully charged state.

What's Included...

  • Intelligent 30 Amp Split Charge Relay (Self Switching)
  • Fitting Instructions
  • Full Telephonic Technical Support

The Benefits...

  • Connects straight to the main battery + terminals
  • Fridge Output Facility
  • No possibility of the second battery overcharging
  • No possibility of the relay kit causing main battery drain
  • Intelligent monitoring of the main battery
  • Intelligent monitoring of the leisure battery
  • Thermal Cut Off (auto resets)
  • Up to 30 Amp charge rate for the additional battery
  • No alternator connection required
  • Prioritises to protect your main battery

Product Reviews

Write Review

  1. great for fit and forget

    Posted by Scott on 28th May 2021

    I used to use a solar panel to charge my leisure battery. But during winter month's the regulator used more than the panel could supply and ultimately drained the battery.
    The split charger is great as you just fit it and forget about it. I ran 2 voltage displays to my dash. One for the vehicle battery and one for the leisure battery so i could monitor what was happening.
    Only thing i would say is that you need to hide the unit somewhere insulated for sound as the 'clicking' of the relays can be annoying.

  2. Simple and efficient

    Posted by Stephen Dray on 23rd May 2013

    Bought this for my home built camper, it is easy to fit and is perfect for the job, and the fridge output is very useful!!