1. [Attention Please] This is a battery adapter, not battery. The adapter can convert for dewalt 18V/20V Max Lithium ion battery to replace for Shark XSBT620/XSBT750/XSBT700 battery. ATTENTION PLEASE: Please take the adapter off when are not in use. Otherwise, it will drain your battery. 2. [Compatible with DeWalt 20V Lithium Battery] Convert for DeWalt 20V battery to replace for Shark XSBT620/XSBT750/XSBT700 battery. If you don't have the battery, but you have the dewaxlt 20v battery. so you just need to get the adapter, then you will can use them and your vacuum cleaners. 3. [Compatible with for Shark Cordless Vacuum Cleaners] work for Shark UZ365H and "IZ1" "IZ2" "IZ3" "IZ4" series vacuums, such as IZ162H IZ162HC IZ163 IZ361H IZ362H IZ363HT IZ462H IZ463H IZ201 IZ251 IZ482H IZ483H and QZ162HQBI QZ162HQDE QZ162HQLC QZ162HQPB QZ162HQSV QZ163HQBl QZ163HQDE QZ163HQLC QZ163HQPB QZ163HQSV cordless stick vacuum cleaners. So Please be careful to check the model of your device before purchase. 4. [Warning]This adapter cannot be used for Shark IZ862H, IZ631H, IZ682H, IZ662H Vacuum Cleaners, so if your vacuum cleaner's model is one of them or "IZ6..." or "IZ8..." series, please do not choose this converter. Adapter & applicable: A-DW-XSBT01, for Dewalt 20V Li-Ion Battery Material: ABS colour: Dark Gray Package Contents: 1 x Battery Adapter