Use your Ozonics HR-300 Scent Elimination Device for longer for an enhanced hunting experience with the HR-300 Extended Life Battery. The battery lasts approximately either hours in treestand (boost) mode and 10 hours in blind (standard) mode. Smart battery technology relays information to the HR-300 to maximize run time based on usage conditions and promotes increased battery life. The battery takes approximately six hours to charge. This extended life battery is for use with the Ozonics HR-300 Scent Elimination Device only.