Energizer Nickel-Metal Hidride Rechargable 9 Volt Battery
The Eveready Battery Company markets the Energizer line of rechargeable nickel-metal hydride (NiMH) batteries in AAA, AA, C, D and 9 Volt sizes. Unlike older technology rechargeables, NiMH cells can be fully recharged from any state of discharge, and can be charged hundreds of times without affecting their storage capacity. Eveready recommends recharging their batteries with their own brand of smart chargers, which regulate the charge rate to prevent damage to the batteries.
Use and Disposal of Energizer Rechargeable Batteries
With the exception of the 9 Volt model, Energizer NiMH batteries are rated at 1.2 Volts and can be safely used in any device that uses conventional or alkaline dry cells, including cameras, gaming systems, DVD players and radios. NiMH batteries have a higher self-discharge rate than most batteries, and they should be recharged before use if stored for more than a month. For the same reason, they're a better match in high-use applications than in devices that are used infrequently.
Dispose of used NiMH batteries at a recycling center if possible. The nickel components can be recycled. They can also be discarded with household trash, in all states except California.
Charging Eveready NiMH Batteries
Charge new batteries before their first use. This will compensate for the discharge due to storage. Nickel-metal halide batteries can be recharged at any time, from any state of discharge. However, if the device they're in indicates the battery power is low, it's best to charge them as soon as possible because their output drops off very quickly after most of their energy is spent.
A smart charger which is designed for NiMH batteries is the best choice for recharging the batteries. These chargers vary their output in accordance with the charge rate and/or temperature of the battery, and protect the cells from undercharging, overcharging, or overheating.
If you're in a rush, some smart chargers can quick-charge the batteries in about 15 minutes. Other models replenish the charge at a slower rate but charge the cell more fully, so they'll last longer between charges. Most have LED's which flash, hold steady, or turn off to indicate the state of charge or when a battery can no longer accept a full charge.
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