【Advantages of 2 in 1 Battery Adapter】 2 in 1 Battery Adapter is convert for Craftsman 20V batteries to work for Dyson V8 V7 series Cordless Stick and Handheld Vacuum Cleaner Models.Two batteries Double power and double battery capacity work simultaneously on your Vacuum Cleaner, higher powerful and longer working time,more efficient on the Vacuum Cleaner.

【for Dyson V7 V8 Series Vacuum】 Compatible For Dyson V7 and V8 SV10 Slim series cordless stick and handheld Vacuum Cleaner.

【Fit Craftsman 20V Battery】Compatible with Craftsman 20V Lithium-ion batteries, such as CMCB202 CMCB201 CMCB204 CMCB204-2 CMCB202-2 CMCB204-OPE CMCB209 and Use your tool battery to offer long time fishing,convinience and relax on trip. （Battery not included）

【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.