Panasonic USB Charging Mini Driver MiniQu Battery 850mAh Main USB Charging Bit Set of 5 Black 3.7V Built-in Unit, Cable, EZ7412S-B

Battery <Built-in>Lithium-ion battery 3.7V, 850mAh Screw tightening work range: Machine screw M3 (when using electric), machine screw M6 (when tightening by hand) Chuck: One-touch bit locking method (dimensions up to step: 9mm, 11.5mm, 13mm), hexagonal bit, width across flats 6.35mm Tightening torque: 1N・m (when electric), 8.0N・m (when tightening by hand, maximum durable torque) Rotation speed: 230 rotations/min USB terminal: 1 terminal, microUSB B type, DC5V Capacity (estimated when fully charged): Machine screws iron (no springs/washers) M3 x 5mm approximately 620 pieces, M6 x 10mm approximately 540 pieces Charging time: Approximately 45 minutes (for our EZ37C4/EZ37C5), approximately 35 minutes (for commercially available USB charger 5V1.0A), approximately 25 minutes (for commercially available USB 5V2.0Ah)