Stihl Systainer battery box, size L. A tough, lightweight plastic case for storing and carrying one STIHL AR 2000 L or AR 3000 L backpack battery together with the AR L carrying system or accessories. The cushioned base protects the battery from knocks, the T-Loc catch opens and locks with one hand, and boxes clip together into a stack while each box can still be opened on its own. Works with other Systainer boxes.