Rechargeable Battery For Original Cordless Swivel Sweeper Models Have one charging while one is hard at work for you! Always have one ready to go! Rechargeable Battery For Original Cordless Swivel Sweeper Models. Assorted colors will ship. For the initial charging and times when the battery is completely dead, charging should take about eight hours. According to the Swivel Sweeper manual, eight hours is the longest the battery should need to charge. Please do not charge longer than 12 hours at a time.