3M™ Battery Pack BP-17IS is a nickel cadmium (NiCad) battery pack that is NIOSH approved with A, AE, E, K and P3 cartridges. It is intended for use with the 3M™ Breathe Easy Turbo Powered Air Purifying Respirator Assembly 520-17-00, 3M™ Breathe Easy Turbo Powered Air Purifying Unit 022-00-03R01 and the 3M™ Powerflow™ Face-Mounted PAPR System. For use with the 3M™ Breathe Easy Turbo Powered Air Purifying Respirator Assembly 520-17-00, 3M™ Breathe Easy Turbo Powered Air Purifying Respirator Unit 022-00-03R01 and the 3M™ Powerflow™ Face-Mounted Powered Air Purifying Respirator System. NIOSH approved with A, AE, E, K, P3 cartridges only. This intrinsically safe, rechargeable nickel cadmium (NiCd) battery pack can only be used with certain 3M™ Cartridges and Filters. For the 3M™ Breathe Easy System, choose one of the following cartridges/filter: 3M™ Organic Vapour Cartridge 456-00-01R06, A 3M™ Formaldehyde/Chlorine/Hydrogen Chloride/Sulfur Dioxide Cartridge 456-02-01R06, E 3M™ Ammonia/Methylamine Cartridge 456-01-01R06, K 3M™ Organic Vapour/Chlorine/Hydrogen Chloride/Sulfur Dioxide Cartridge 456-03-01R06, AE 3M™ High Efficiency Cartridge 450-00-01R12, P3 For the 3M™ Powerflow Powered Air Purifying Respirator System: 3M™ High Efficiency Filter 450-01-01R20, SP3