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FULL KIT incl:


  • REDARC LFP1240 40A in vehicle LIFEPO4 battery charger
  • 6M 6B&S Red core and 2M 6B&S Black core cable 
  • Premium Quality after market RK1260 replay kit
  • Green/Red led display gauge 


The REDARC LFP1240 is a 12 volt 40 Amp In-Vehicle Battery Charger designed to charge your Lithium Iron Phosphate (LiFeP04) batteries to their optimal level, regardless of their size.

The Lithium DC to DC charger provides a unique charging profile by using a two-stage process. The DC DC Charger is able to achieve a proven 100% charge helping to maximise the life of your battery.

The LFP1240 uses power from the vehicle charging system and solar panels to charge lithium auxiliary batteries. It features a Maximum Power Point Tracking (MPPT) solar regulator, allowing you to deliver the maximum amount of power from your solar panels to your auxiliary battery, even during low light conditions.

The lithium auxiliary battery DC charger is suitable for 12 and 24 volt vehicles, operating from 9 and 32 volts DC input.

Charging Lithium Batteries

Lithium Iron Phosphate auxiliary batteries are becoming more popular in recreational and industrial applications due to their improved storage capacity relative to size and weight. They are perfect for recreational vehicle power systems. However they require specific charging conditions in order to operate correctly and the battery itself must have cell balancing and an in-built battery management system. REDARC have considered this and designed a charging profile to complement the in-built battery systems.

For a better touring experience using your favourite electronic devices for longer, the REDARC Lithium DC to DC Charger is designed, built and tested in Australia to make sure it won’t let you down.

The RK1260 relay Kit allows you to automatically switch between charging your auxiliary battery from the vehicle or from your solar panel when using either a BCDC1225 or BCDC1240. Poor quality relays can render the best dual battery installs useless. Redarc has tested and selected only the very best relay for its awarding winning BCDC range of in-vehicle battery chargers. The fully sealed, high quality relay included in the kit features heavy duty terminals ensuring the relay works safely up to and continuously at it’s 60A current limit. Standard relays with smaller terminals cannot withstand the long periods of high current charging needed when the battery is fl at which can result in overheating and ultimately failing. The RK1260 Relay Kit comes with everything needed to install an automatic change-over setup, with relay, wiring loom, butt splices, heat shrink, wiring diagram and instructions.


  • Two-stage, LFP battery specific charging algorithm

  • Suitable for 12 and 24 volt automotive electrical systems

  • Simple LED status indication.

Input (Operating) Voltage 9 - 32VDC
Output System Voltage 12VDC
Maximum Charging Voltage 14.6V
Output Current Rating (Cont.) 40A
Input Current (Max.) 40A
Input Fuse Rating 60A
Output Fuse Rating 60A
Warranty 2 Years
Standby Current Draw <100mA
Output Power 600W
Length (mm) 150
Width (mm) 120
Height (mm) 37
Weight(kg) 0.68
Type Approval CE