Designed specifically for the jashen v16 cordless vacuum cleaner. 1pc 2500mah detachable, rechargeable lithium-ion battery with led panel. Can operate 15-40 mins of cord-free cleaning. Extra battery provides up to an additional 40min running time on min mode. Voltage 25. 2 volts. Docking station (included with your vacuum) compatible as a secondary battery for even more deep cleaning. Buying an additional battery allows you to charge two batteries at once. Batteries require a full 4-hour charge for optimum performance. Features compatible with: jashen v16 cordless vacuum cleaner 1pc 2500mah detachable, rechargeable lithium-ion battery with led panel. Can operate 15-40 mins of cord-free cleaning voltage: 25. 2 volts