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 Makita 18V battery work for Ryobi 12V tools,convenience and save money!Compatible with 12V CB120L CB121L BPL-1220 130503001 130503005. (NOT for CB120N) 【Compatible with Makita 18V Battery】: Perfectly compatible with Makita 18V Lit-ion Battery, works with BL1820 BL1840B BL1820B BL1815B BL1835 LXT-400 BL1845B BL1845 194205-3 194204-5 BL1830B BL1850B BL1860 etc. 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 Makita 18V 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: Suitable for Makita 18V Battery: BL1850 BL1840 BL1830 BL1820 BL1815,etc. Converter top: Work on for Ryobi 12V lithium cordless power tools Note： This converter does not support for Charger