STIHL AL 301 HIGH-SPEED CHARGERSTIHL AL 301 HIGH SPEED CHARGER AK & AP Battery System You can use the STIHL AL quick battery charger to minimize charging time. All STIHL AK batteries, STIHL AP batteries, and STIHL AR batteries can be rapidly recharged with the STIHL AL quick battery charger. Active battery cooling protects the batteries during charging. The operating status display uses an LED to indicate the progress of the charging process. With a jig for practical wall mounting