The replacement battery is compatible with the Dyson models V8 Absolute, V8 Animal, and V8 Fluffy, offering a long lifespan and high performance. The battery is of the Li-Ion type, with a nominal voltage of 21.6 V and a capacity of 4500 mAh. This replacement battery provides a longer cleaning duration without interruptions. The battery is easy to install and can be inserted into the device. It can be charged effortlessly using the existing charger of the Dyson vacuum cleaner.