Compatible with the tools in the STIHL AK System, the AK 10 is a lightweight 36 V Lithium-Ion battery. It features a charge level indicator on the top with four LEDs so you can see how much charge you have left quickly and easily, at the touch of a button. This is the recommended battery for the FSA 57 grass trimmer and HSA 56 hedge trimmer and has been designed to balance perfectly with those tools.
