The Makita PDC1200A01 Portable Backpack Power Supply is a high-capacity backpack that delivers 1200 watt hours of output. It provides longer run time to last an entire workday. Actual run times vary by product, application, and workday amount. It works with 36V (18V X2) LXT (adapter included) and 40V max XGT (adapter sold separately) systems. The battery box can be detached from the harness and to be used a stationary power supply. It features a flat base, allowing the product to stand upright. There is an integrated carrying handle for convenience. The power supply reaches a full charge in 3 hours (AC power supply included).