1.25.2V/3000mAh/5000mAh Lithiumion Battery for Handheld Cordless Vacuum Cleaners Builtin smart chip provides protection against overcharge, overheating, and short circuits to prevent cleaning interruptions No memory effect: can be charged at any time without capacity loss (unlike NiMH); supports over 500 charge and discharge cycles for strong durability Maintains original suction and performance over time, making it suitable for cleaning pet hair, deep cleaning, and large homes Compatibility: designed for handheld cordless vacuum cleaners that use this lithiumion battery specification Use scenarios Quick cleanups for pet hair and debris on furniture, stairs, and car interiors Thorough cleaning of floors and upholstery in large homes or multiroom layouts Extended cleaning sessions with a backup battery when charging access is limited