STIGA E 475 lithium-ion battery for all STIGA 500 series - 700 series - 900 series hand tools TECHNICAL DATA SHEET POWER Charging time (standard double charger) 330 min ePower Si Battery capacity 7.5 Ah Voltage 48 V Nominal lithium-ion battery energy 324 Wh Charging time (standard single charger) 330 min Charging time (fast single charger ) 180 min CZ