Battery Type: Lithium-Ion (Li-ion), which offers a lightweight design, consistent power delivery, and no memory effect.Voltage: 20 Volts (nominal 18V).Capacity: 2.0 Amp-hours (2.0Ah).Charging Time: Approximately 40 minutes for a full charge when used with compatible Maxmech chargers.Energy: Approximately 36–40 Wh.