3M PAPR, Versaflo Standard Battery TR-630, For TR-600 Powered Air Purifying Respirator, 4 Hour Charge Time or Less, 1/Case: Amazon.com: Tools & Home Improvement
3M™ Versaflo™ Battery TR-830/94243(AAD) | JAM Industrial
3M Versaflo Single Station Battery Charger Kit Tr-641N/37350 (Aad) - Walmart.com
3M Versaflo Battery Charger Cradle TR-640, Replacement Cradle for TR-600 and TR-800 Series Powered Air Purifying Respirator (PAPR), Charger Cable Not Included: Amazon.com: Tools & Home Improvement
3M Versaflo 17363-case Economy Battery TR-330, for Versaflo TR-300 PAPR 1/case: Amazon.com: Tools & Home Improvement