Heavy Duty GEL (Gelled Electrolyte) Deep Cycle Battery representing the ultimate in Deep Cycle technology. Designed specifically for demanding Deep Cycle applications, the integrity of Lion Gel batteries is maintained even under extreme conditions. Gel technology allows for a fully sealed battery design with active electrolyte held in a gellified state with internal recombination of more than 99% of internally produced gases. The Gel battery is safe to use in gas sensitive applications such as Motorhomes, boats and mobility equipment and can be left in a fully discharged state without any loss of battery capacity if not recharged immediately.