Compatibility: This battery is a direct replacement for Shark XBATR725 batteries and is compatible with IZ662H, IZ682H, IZ683H, IZ661HC, IZ662HC, IZ631H Shark cordless vacuum cleaners. High Capacity: With a 3500mAh capacity, this battery provides longer working time for your vacuum cleaner, reducing the need for frequent recharging. Lithium-ion Technology: Adopting lithium-ion technology, this battery offers high energy density, long life cycle, and low self-discharge rate, ensuring stable and reliable performance. Rated Voltage: The battery has a rated voltage of 25.2V, providing steady and consistent power to your vacuum cleaner for optimal cleaning performance. Safe and Reliable: This battery has multiple safety features, including overcharge and discharge protection, short circuit protection, and overheating protection, ensuring safe and reliable use. Replacement for Shark Battery XBATR725 ,Compatible with IZ682H IZ662H Shark Cordless Vacuum Cleaners Lithium Ion Battery 3500mAh 21.6V.