The STIHL AK 10 battery gives users an incredible power-to-weight ratio at an affordable price. The entry-level battery of the STIHL AK Series of battery-powered products, the AK 10 delivers a long service life with the ability to withstand up to 1,500 charge cycles.. With an indicator light displaying battery levels, it’s easy to stay productive and get the most out of battery-powered products. Run time may vary based charge level and operating style. View Our Usage Chart