Power your Hoover Cordless products with the ONEPWR Battery System. From hard floor cleaners to vacuums, leaf blowers, hand vacuums and more, the ONEPWR Battery System has the right battery to power any cleaning job. The 4.0Ah battery is designed to be compact and lightweight to reduce user fatigue while optimizing maneuverability. With lithium-ion battery technology, you get long, lasting fade-free power and runtime to tackle any job, anywhere. Charger sold separately.