Maintenance Free 6FM12 (6-FM-12) 12v 12Ah SLA Sealed Lead-Acid Battery with F2 Terminals - Special grid material and high-purity additive ensures long battery life. - Valve Regulated sealed structure, no acid, no need to add water. - Common use for communication systems, electric system, UPS system, emergency lights. - Fully charged from factory, ready to install. - Dimensions: Lx150mm | Hx100 (including Terminals) | Wx98mm.