High Capacity Design: Biswaye V8 replacement lithium battery 4500mAh compatible with Dyson V8 series vacuum cleaner. Same as OEM: Use international high-quality battery celles, fit perfectly into the Dyson oem charger and device. Works Well: compatible with Dyson V8 Fluffy Vacuum, Dyson V8 Animal Cordless HEPA Vacuum, Dyson 214730-01 V8 Absolute Cord-Free Vacuum, Dyson V8 Animal Cordless Stick Vacuum, Dyson V8 Animal Cord Free Vacuum, Dyson V8 Absolute Stick Vacuum Pet Hair Vacuum, V8 Animal Plus. Great Energy-efficient: The extra power allows much longer run time on high, more powerful than the original. Integrated microchip prevents overcharging and lengthens battery life.