With a host of user-minded features, the AR 2000 L provides an excellent combination of reliability and innovation. With long run times and its ability to handle up to 1500 charge cycles, the battery is designed to last. Additionally, its construction, which includes a durable handle, lends itself to a rugged body that can withstand operation in even rainy conditions. Also, its onboard USB port provides a charging option for users.Find the BATTERY BACKPACK AR2000L at Ace.