Solar Split Charge Relay Kits

Solar split relay kits allow a vehicle’s alternator and a solar panel to charge the same leisure battery safely and efficiently. These kits combine a split charge relay with a solar controller so both charging sources work together without overloading the system. They are ideal for campervans, motorhomes, 4x4 setups and off grid vehicle builds.

The relay handles charging from the engine while the solar controller manages input from rooftop or portable solar panels. This ensures stable charging for fridges, lights, fans, pumps, laptops and other 12 V equipment during travel and when parked. Smart protection features help prevent starter battery drain and maintain healthy charging levels throughout the day.

Choosing the right solar split relay kit depends on your alternator output, leisure battery size and typical power use. Standard kits suit small to mid size van conversions, while higher rated relays and controllers support larger battery banks or heavier loads. With reliable dual charging and simple installation, solar split relay kits make vehicle based off grid power more efficient and convenient.