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About Biswaye: Biswaye products are made with the highest quality materials. All Biswaye battery packs comply with security testing standards. As a professional manufacturer of power tool batteries and chargers, Biswaye specialize in designing and manufacturing varieties of power tool batteries and chargers with high quality. Specification: Battery Type: Lithium-ion Battery Voltage : 21.6V Battery Capacity: 4000mAh Battery Color: Grey Battery Condition: New Advantages of our battery: √ Improved battery cell and durable structure. √ On-board light with button to check the battery condition. √ No memory effect and virtually no power discharge for maximum productivity and reduced down-time. √ Provides extended run-time and optimised power to complete vacuum tasks quickly. Replacement for Original Dyson Battery: for Dyson 21.6V battery V7 Works for Dyson V7 Series Vacuum: (Use ""Ctrl"" + ""F"") for Dyson V7 Trigger Cord-Free Handheld Vacuum Cleaner for Dyson V7 Motorhead Cordless Stick Vacuum Cleaner Fuchsia (227591-01) for Dyson V7 Animal Cordless HEPA Stick Vacuum Cleaner, Dyson V7 Animal Pro+ Cordless Vacuum Cleaner-Extra Tools for Dyson V7 Car+Boat Cord-Free Handheld Vacuum Cleaner for Dyson V7 Fluffy Cordless Stick Vacuum for Hard Floors Package Include: 1PC* Biswaye 21.6V 4000mAh V7 Replacement Battery for Dyson V7 Series Cordless Vacuum 2PCS* Replacement Filters for Dyson V7 Series Cordless Vacuum