STIHL AP 500 S BATTERYSTIHL AP 500 S BATTERY The STIHL AP system supports you in your daily tasks garden, landscape and tree care. The appropriate AP lithium ion batteries help you to use STIHL battery tools even for demanding work. Four LED lights keep you always informed about the charge status of the battery. Thanks to the new Power Laminate Technology, the STIHL AP 500 S battery offers you twice the number of possible charging cycles compared to previous STIHL