The SANTI 9Ah Battery is a compact, travel-safe lithium-ion power source designed for use with SANTI heated gear. Specifications: Capacity: 9Ah Voltage: 12V Weight: 1 kg Dimensions: 180 mm height, 69 mm diameter Charging Time: 2-3 hours Activation: Piezo switch with blue backlight Pressure Relief Valve: Included Compatible Devices: SANTI heated gloves, vest, and undersuit, as well as other 12V devices up to 150W Run Times (approx.): Heated gloves: 3h 30min, Heated vest: 1h 45min, Heated undersuit: 1h