Powerful 36 V, 6.0 ah Lithium-Ion battery. The AP 300 is STIHL's most powerful handheld battery, offering increased run times for those bigger jobs. The battery has an integrated LED charge indicator, clearly displaying as and when the battery needs charging. Compatible with the AL 101, AL 300 and AL 500 charger unit. Click on the technical data tab of individual products to learn more about machine run times.