The Olympia Tools© X20ST Li-ion Battery has a digital charge level indicator with minimal self-discharge. X20ST batteries and chargers are 100% compatible with all tools in the X20ST 20V range.
Specification:
Charge Time with X20ST Fast Charger: 2.0Ah = 1 hour, 4.0Ah = 2 hours.
The Olympia Tools© X20ST Battery 20V 2.0Ah Li-ion.