How to Care for Nickel-Metal Hydride Batteries

Nickel-metal hydride batteries, also known as NiMH batteries, are rechargeable batteries that can power electronic devices up to four times longer than standard alkaline batteries. Unlike alkaline batteries, which can only be recharged up to 10 times before they must be replaced, nickel-metal hydride batteries can last for up to 1,000 charging cycles. Because NiMH batteries contain no-toxic chemicals, they're also better for the environment than other types of rechargeable batteries. Properly caring for your nickel-metal hydride batteries will help extend the life of your rechargeable batteries.

 

Fully battery charger and discharge new nickel-metal hydride batteries at least three times before using your NiMH batteries for the first time. Insert your NiMH batteries into a universal battery charger/discharger, observing the correct polarity. Plug your battery charger/discharger into a standard wall outlet and set it to "Discharge" mode. Switch the charger/discharger to "Charger" mode once it indicates that the battery discharge process is complete. Allow the batteries to charge for the amount of time indicated in the battery charger/discharger instructions. This will help your nickel-metal hydride batteries realize their maximum charging potential.

 

Exercise your nickel-metal hydride batteries to ensure that they are able to continue charging to their full capacity. Fully charge and discharge your NiMH batteries once, using the charging and discharging process described in Step 1, to complete the battery exercising process. Repeat this process on your nickel-metal hydride batteries once a month and after long periods of disuse.

 

Store your nickel-metal hydride batteries in a cool, dry location that is out of direct sunlight and extreme temperatures if your NiMH batteries will not be used for more than one month. Repeat the battery exercise process described in Step 2 before using NiMH batteries that have been stored away.

 

Keep the contact points on your nickel-metal hydride batteries clean of corrosion. Wipe the battery contacts clean with a cotton swab that has been dipped in rubbing alcohol, as needed. Clean battery contacts will make it easier for your NiMH batteries to reach a full charge.

 

Charge your nickel-metal hydride batteries according to the directions that came with your battery charger, as needed. When regularly exercised as described in Step 2, NiMH batteries are not susceptible to the "memory effect."