The TR-641UK Battery Charger Kit is a complete single station battery charger for use with the 3M™ Versaflo™ Powered Air Turbo TR-600 Series. It consists of a TR-640 Cradle, Power Supply and Lead. Will charge a TR-630 standard battery or TR-632 high capacity battery in less than 4 hours, Cradle will charge only one battery at a time, Batteries may be stored on the charger, fully charged, ready for immediate use