About this item 【Function】This adapter can make listed lithium batteries use on for Ryobi 12V li tools , and let you Enjoy the benefits of extended run-time of Li-Ion Batteries on your existing 12V tools. If you don't have for ryobi 12V battery ,you can use for Craftsman 20V battery work for Ryobi 12V tools,convenience and save money! Compatible with 12V CB120L CB121L BPL-1220 130503001 130503005. (NOT for CB120N) 【Compatible with Craftsman 20V Battery】: 100% Compatible with Craftsman V20 20V MAX batteries CMCB202 CMCB201 CMCB204 CMCB204-2 CMCB202-2 CMCB204-OPE CMCB209 (Only for V20 Series)20Volt battery, convert to Replace for Ryobi 12V li-ion Battery Compatible with RYOBI CB120L CB121L BPL-1220 130503001 130503005, 12V Lithium Battery 【Product Advantages】：This adapter can make listed for Craftsman 20V V20 lithium batteries use for Ryobi 12V lithium cordless power tools,and let you enjoy the benefits of extended run-time of li-Ion batteries on your existing 12V Li tools.Replacement Battery for BID-1201, CAH120LK, CD100, CK212DA, CKF-120LM, CR-1201, CS-1201, HJP001, HJP001K, HJP002, HP612K, JG001, LSD-1201PB, LSD-1202PB. 【Safe material】: ABS high -quality materials, high temperature resistance, wear resistance, drop resistance, easy to carry, easy to use. The solid design guarantees that it will not slip. Complies with FCC RoHS and CE safety testing standards. Adapter cannot be charged. If you need to charge, unload the adapter first. Converter bottom: Compatible with Craftsman V20 20V MAX batteries CMCB202 CMCB201 CMCB204 CMCB204-2 CMCB202-2 CMCB204-OPE CMCB209,etc. Converter top: Work on for Ryobi 12V lithium cordless power tools. Note： This converter does not support for Charger