Large Capacity 2400mAh, More Capacity than Previous Models Fast Charge: charge time only 35 minutes at 9V 2A (charge to 80% in 20 minutes) The battery is suitable for temperatures from -4 ℉ to 104℉ (-20℃ ~ 40℃) **NOTE: A/C Wall Adapter is NOT included. Please use 9V/2A USB wall adapter for fastest (advertised) charging times SMART SEQUENCE CHARGE: With an integrated smart charging circuit, the Fast Charge Hub automatically optimizes the charging sequence when more than one battery is connected. Buying from EVO Gimbals supports a Small Oregon Business! Customer Service is based in Bend, OR, replies in 24 hours.