BatPower Dyson V8 Replacement Battery vs Dyson V11 Replacement Battery

These are not rival batteries for the same vacuum. The BatPower pack fits Dyson V8 models only; the BatteryMall pack fits V11 and its SV variants with the click-in slot. Buy the one that matches your vacuum, since neither will fit the other's model. On capacity the BatPower pack claims more (6500mAh) than the BatteryMall pack (4500mAh), but that larger figure is a third-party claim, while the BatteryMall pack carries a 4.8 rating from 50 buyers and a one-year warranty. Owners of both types report good runtime and steady suction, and the common failure is ordering the wrong fit.

• Choose the BatPower V8 battery if you own a Dyson V8 (Absolute, Animal, Motorhead, Fluffy or Carbon Fiber) and want the largest claimed capacity for longer runs.
• Choose the BatteryMall V11 battery if you own a V11 or SV15-SV47 with the click-in battery slot and want a rated, warrantied replacement.