Compatible with Dyson V8 series Vacuum - Our Battery Adapter is Compatible with Dyson V8 Cordless Stick and Handheld Vacuum Cleaner, V8 Motorhead Pro, V8 Trigger, V8 Fluffy HEPA, V8 Absolute HEPA, V8 Animal HEPA, V8 Car+Boat, V8 Mattress, V8 Extra Cordless Vacuum Cleaners.( Universal FOR V8 , NOT FOR V6, Type A, Type B, V10 etc.). Compatible with Ryobi 18V Lithium Battery If you don't have the V8 battery, but you have the Ryo*bi 18v li-ion battery(P102 P103 P104 P105 P107 P108 P109 P190 P122), so you just need to get the adapter, then you will can use them and your V8 vacuum cleaners. Easy to install and remove - Our converter is easy to use, you just need to plug the adapter into the base of your V8 cordless vacuum cleaner and then insert your 18v 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 - 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. Package Including - Our package only includes the Adapter, battery is not included in the package.