Voltage: 7.4v Capacity: 350mAh Connector: JST Style: HPA Size: 14.4mm (0.56in) thick, 56mm (2.2in) long Under Discharge, Over Charge, and Short Protection Titan Power HPA batteries are protected from active-drawing HPA systems such as Polarstar and Wolverine, and will never allow itself to die like lipos, charge too much, or short circuit. No Puff Titan Power batteries will never puff and become unsafe like lipos will that have been either neglected or simply aged over time.