This intrinsically safe, rechargeable nickel cadmium (NiCd) battery pack is a key component of a Powered Air Purifying Respirator (PAPR) system. They provide a light weight, mobile power source to run the motor blower. The battery chemistries offered by 3M have been selected to provide adequate power to the PAPR system to meet air flow regulatory requirements.
For use with the 3M™ Breathe Easy™ Turbo Powered Air Purifying Respirator (PAPR) Assembly 520-17-00, Breathe Easy™ Turbo PAPR Unit 022-00-03R01 and the 3M™ Powerflow™ Face-Mounted PAPR System. NIOSH approved with A, AE, E, K, P3 cartridges only.
For the 3M™ Powerflow PAPR System use 3M™ High Efficiency SP3 Filter Item #: 450-01-01R20
Nickel Cadmium (NiCd) Batteries:
A NiCd battery will take 8 to 16 hours to charge depending on discharge state. Each 3M NiCd battery pack model provides up to 500 charge/discharge cycles. However, the life of 3M NiCd battery packs will be significantly reduced when they are exposed to high heat over an extended period of time. In addition to the general recommendations, the guidelines contained in the user instructions should be followed to maximize battery life:
• Operating temperature: 10° F (-12° C) to 120° F (49° C).
• Charging temperature: 50° F (10° C) to 77° F (25º C). (Internal battery pack temperature.) At higher temperatures, the battery pack may not accept a full charge.
• Do not completely discharge battery packs (less than 1 volt output or “deep discharging”). This will damage the battery cells and will not improve capacity.
• If a battery pack feels hot, let it cool ½-hour before charging.
• Storage temperature: - 4° F (-20° C) to 115° F (45° C). R. H. < 85%
• A NiCd battery in storage, off charger, loses up to 1 % of its charge each day. Batteries subjected to prolonged storage (longer than 12 months) without recharging may lose their capacity to hold a full charge.
• Do not leave inactive or non-regularly used battery packs continuously on the charger for more than 2 weeks. Although the chargers shift to a trickle charge they do not turn off. Continuous trickle charging generates heat which may cause premature deterioration of battery cells. Possible options to maintain battery pack charge include putting chargers on a timer to charge for 8 hours once per week or for 1 hour once per day.