3M� Versaflo� Battery TR-632 is our lightweight, high capacity, lithium-ion battery pack; this battery pack is for use with the 3M� Versaflo� Powered Air Turbo TR-600 Series , Charges in under four hours with light-up charge level indicator, Approximately 750 full charge/discharge cycles, Provides extended duration when compared to TR-630 Standard Battery (when used under equivalent conditions), Rinseable and temporarily submergible for easy cleaning, Easy to see battery charge level, CE approved