Part of the Stihl PRO battery range, the AP 500s is 8.8 AMP 36 volt lithium ion battery that’s charge is indicated by four LED light indicators. Battery life depends on usage and application. AP Battery is designed for long term use and has a long service life and can be used hundreds of times without a noticeable lose in energy. The battery has an integrated STIHL Smart Connector and Bluetooth function. This allows the charging status, daily usage time and location of the machine to be displayed in the app or in the STIHL connected pro portal. The AP 500 S battery can be used in all AP cordless tools