The Gemho 25.2V 3.5Ah Li-ion Replacement Battery for Shark XBATR725SLEU is an essential addition to any homeowner's tool kit. Specifically designed to power your Shark IZ400UK, IZ400UKT, IZ420UKT, and IZ400UKTSB cordless vacuum cleaners, this battery offers unmatched performance and reliability. Its high-capacity Li-ion technology ensures powerful suction with a gentle start, making it easier to start your Shark vacuum in tight spaces or when it's cold. The battery's extended lifespan and lightweight design also contribute to its overall convenience. To further enhance its versatility, it's compatible with the Shark IZ400UKT and IZ420UKT as well. In short, the Gemho 25.2V 3.5Ah Li-ion Replacement Battery for Shark XBATR725SLEU is a game-changer for anyone looking for a high-quality, affordable solution to power their Shark cordless vacuum cleaner.