For Dyson V7 Series Battery 21.6V Vacuum Cleaner Accessories Sweeping Machine Battery Spare Power, Capacity: 4000mAh

1. Using A-class fireproof material, safe and reliable 2. Using high rate power core manufacturing, explosion-proof and safe 3. Built-in intelligent protection chip, protection board, to prevent overcharge, over temperature, short circuit, etc., use more peace of mind 4. With LED power display 5. High compatibility, easy to install and use 6. Applicable models: compatible with Dyson V10 series, Mattres, Animal, Motorhead, Fluffy Sv11, Extra, trigger, Car+boat, etc. 7. Voltage: 21.6V 8. Battery capacity: 2200/2500/3000/3500/4000mAh