[Upper Interface Compatible with Dyson V7 series Vacuum] Our battery Adapter is Compatible with Dyson V7 Cordless Stick and Handheld Vacuum Cleaner: V7 Motorhead Pro, V7 Trigger, V7 Fluffy HEPA, V7 Absolute HEPA, V7 Animal HEPA, V7 Car+Boat, V7 Mattress, V7 Extra Cordless Vacuum Cleaner. (✖ NOTE: ONLY for V7 series vacuums, NOT for V6 V10 V11 V12 V15 series✖) [Compatible with DeWalt 20V Lithium Battery] Convert for DeWalt 20V battery to replace for Dyson V7 battery. If you don't have the V7 battery, but you have the dewa*lt 20v battery. so you just need to get the adapter, then you will can use them and your V7 Series vacuum cleaners [Easy to install and remove] Our Vacuum installation parts converter is easy to use, you just need to plug the V7 adapter into the base of your V7 cordless vacuum cleaner and then insert your dewal*t 20v lithium battery into the adapter, which makes your cleaning work more convenient and simple.When your cleaning work is finished, just remove all of them [Smart Protection System] This V7 adaptor complies with FCC RoHS and CE security testing standards; Built-in over-discharge, over-voltage, over-current, and over-temperature protection, safe and reliable. It is designed with an indicator light, when the light is “Green”, indicates normal work, and once the light turns into “Red”, it means that the battery is running out [Attention Please] 1. Please remove the adapter off first, then hang the vacuum on the wall mount; 2. Cannot charge the vacuum directly without removing the adapter off ASIN B09XV5GZ8Y Item Weight 5.9 ounces Manufacturer JJXNDO Item model number UKK-DW20V7 Batteries required Yes Product Dimensions 3.5 x 2.36 x 5.5 inches