Optima RedTop 34/78 AGM 12V 1000 Cranking Amp BatterySealed, starved electrolyte gas combination Optima batteries never need water, do not leak, and can be mounted in any position. Three versions are available: Red Top, combining optimal starting power in the first few seconds and extended life; Yellow Top, the only dual purpose battery with cranking power and deep cycling; and Blue Top, a genuine, deep cycle battery, ideal for race cars with no alternator.