STIHL AL 101 Battery Charger for AK or AP BatteriesSTIHL AL 101 Battery Charger for AK or AP Batteries Designed for the STIHL AK System, the AL 101 charger delivers fast recharge times and a range of additional convenience features. For the AK 10 battery, you can achieve 80% charge in under an hour. The AL 101 battery charger also shuts off automatically after the battery has been fully charged, ensuring your energy costs stay lower and your STIHL batteries stay cool. Theres even an onboard indicator