What are the different types of auxiliary batteries?

AGM batteries – sealed, maintenance-free, and great value for weekend warriors.

Gel batteries – like AGM but with better deep-discharge protection.

Flooded lead acid – the classic option; works well but needs regular maintenance.

Lithium batteries – lightweight, high-performance, long lifespan, and up to 80–90% of capacity usable. Perfect for bigger Redarc or ARB setups that power fridges, lighting, and all your off-grid gear.