If you're on a long trip or weekend hunt, it's good to have a backup battery available for your Ozonics unit. The Ozonics SG-BA04XL is an Extended Life Battery that works with Ozonics HR600 scent elimination device. Powered by Smart Battery Technology that maximizes run time based on usage conditions, the SG-BA04XL will last approximately thirteen hours in standard mode and ten hours in boost mode.