Higher power and a longer battery life for professional garden power tools. With high power and a long battery life the Lithium-ion backpack battery is the perfect solution for the professional gardener who works all day every day. Including a USB connection and a Bluetooth interface for connection with STIHL connected. A sturdy housing provides protection for the battery whilst also integrating a carry handle and a useful six LED charge-level indicator. A weatherproof coating allows for year-round use whatever the weather to minimise downtime. Easy to use with tools with a socket and a battery slot. A 180cm connecting cable is included with the backpack battery for power transfer when charging the AR L battery and when using cordless power tools. An AP adapter is also enclosed for power transfer between a STIHL AR L battery and a power tool with a battery slot, and for charging in conjunction with an AL 300 or an AL 500 battery. The AP adapter also provides power transfer from a Stihl AP battery in combination with an AP holster and connecting cable. It can be directly connected to the RMA 765 V lawnmower to maximise usage times. When using the AL 300 battery the charging time to 80% is 210 minutes and to 100% is 270 minutes. If you have the AL 500 battery then it takes 110 minutes to charge to 80% and 150 minutes to charge to 100%.