The 3M GVP-111 and W-2954 Battery Packs are durable nickel cadmium (Ni-Cd) rechargeable batteries designed to deliver consistent power over a long life. Each model of battery pack provides up to 500 charge/discharge cycles. However, the life of 3M battery packs will be significantly reduced when they are exposed to high heat over an extended period of time. To maximize battery life, these guidelines should be followed.
Charge 3M battery packs before they are completely discharged.
Damage may occur if the battery pack is completely discharged ("deep discharged") frequently.
When the GVP-111 "RECHARGE BATTERY" light comes on, switch to a fully charged battery pack and begin charging the discharged battery pack.
With the W-2954 battery pack, switch to a fully charged battery pack and begin charging the discharged battery pack when you notice reduced airflow and the filter has not reached its capacity.
3M battery packs may be charged any time during the discharge cycle.
Unlike some Ni-Cd batteries, 3M battery packs do not develop a "memory".
Whether it has been used 30 minutes or 8 hours, the battery pack may be connected to the proper 3M charger and charged.
Use only the 3M charger specified for that model to charge 3M battery packs
Use the GVP-112 charger to charge the GVP-111 battery pack.
Use the W-2933 charger to charge the W-2954 battery pack.
Always charge 3MÔ battery packs at a temperature of 77° F ( 25º C) or less.
At higher temperatures, the battery pack may not accept a full charge.
If a battery pack feels hot, let it cool ½-hour at 77º F ( 25º C) or less before charging.
Do not charge multiple battery packs in an enclosed cabinet without ventilation.
To fully charge a 3M battery pack, charge it roughly twice as long as it was used since last charged.
For example, a battery pack used for 8 hours should be charged 16 hours.
Do not charge a battery pack continuously for more than 1 week
Continuous charging generates heat which deteriorates Ni-Cd batteries.
Infrequently used battery packs should be fully charged, initially, then charged one hour each day to maintain a full charge.
Without periodic charging, a Ni-Cd battery in storage loses approximately 1 % of its charge each day.
Allowing a battery to self-discharge during extended storage will not harm the battery pack.
After extended storage, charge a discharged battery pack 16 to 20 hours.
The red light on the battery charger remains on whenever electrical current is flowing.
If the charger light is off:
the battery may not be accepting a charge, or
the battery charger may not be working correctly.
It is normal for the charger light to remain on and both the charger and battery pack to become warm when the battery is fully charged.
To properly dispose of 3M battery packs, follow local solid waste disposal regulations
For more information in the United States, call the RBRC Battery Recycling Information Helpline at 1-800-8-BATTERY (1-800-822-8837).
For more information about 3M PAPR systems and batteries contact a Technical Service representative in the 3M Occupational Health and Environmental Safety Division:
In the United States, call 1-800-243-4630.
In Canada, call 1-800-265-1840, ext. 6137 or call (519) 452-6137.
