Sealed lead acgeable battery 6-FM -4.012V2.3AheadConstant Voltage Cycle use. 14.70V-15. Standby use. 13.50V-13, 70VMax. Charging Current 0.70A, Sealed lead acgeable battery 6-FM -4.012V2.3Ahead Constant Voltage Cycle use. 14.70V-15. Standby use. 13.50V-13, 70V Max. Charging Current 0.70A