This genuine Makita BL1830B battery is compatible only with Star Protection tools, indicated by the Star Symbol™ and/or Yellow Battery Receiver under the tool. It is a 3.0Ah Lithium-ion slide-on battery designed for Makita's 18V LXT cordless tools. This twin pack includes two 18V 3.0Ah batteries, offering reliable power for your Makita machines and cordless radio. Enjoy peace of mind with a full 1-year warranty on this product. Please be aware of counterfeit batteries available online; these are guaranteed genuine Makita products.