Run time with new battery pack, clean filter and fully charged is approx. 8-12 hours Recharge time is less than 3.5 hours The TR 332 is a high capacity Lithium Ion battery pack for the 3M™ Versaflo™ TR 300 PAPR. SPECIFICATIONS Battery Life: 8 - 12 Hours Battery Type: High Capacity Lithium Ion - Rechargeable Brand: Versaflo™ Color Family: Black Compatible Respirator: TR-300 Series; TR-300N+ Series Hazard Type: Silica Intrinsically Safe: No Product Color: Black Product Series: TR-300; TR-300+ Product Type: Battery Recommended Application: General Maintenance; Powder Handling; Cleaning; Infection Control; Grinding; Cutting; Powder Coating; Sawing; Sweeping; Mixing; Painting; Metal Repair; Assembly and Mechanical; Drilling