The RYOBI 40V 6Ah Lithium Starter Kit is the perfect solution to get your job done faster without interruption. With extended runtime, this lithium battery provides an improved user experience. This battery features a high visibility LED fuel gauge to clearly indicate remaining runtime. Fade-free power allows users to optimize the entire use of the battery in all weather conditions. Easily install and remove the battery with secure quick-release button. With 4X faster charging than 40V Battery Charger OP403A, this charger decreases downtime significantly allowing users to charge a 6Ah Lithium Battery in under an hour. The fan cooled charger technology protects the battery and extends its lifetime. Featuring LED indicator lights, users can easily identify battery charge status. To maximize workspace, the wall mount capability ensures organization at any given point. Part of the RYOBI 40V System.