The ARB Slimline 100 is a super-flat 100 Ah lithium battery, just five centimetres tall, with charge controller, MPPT solar input and wiring already built in. It fits where you never expected a battery.
Modern vehicles have smart alternators to cut emissions. We explain the problems they cause when charging a dual-battery system, and which chargers cope with them.
Advertisement: A battery monitor is a fuel gauge for your battery. The Balmar SG200 shows state of charge and state of health and works out how long your power will last. From 12 V to 48 V, for all common battery types.