Rechargeable batteries can last for years.
Rechargeable batteries have increased in usage because they can be used many times before being thrown away. This saves the consumer money, since they do not have to buy batteries as often. In addition, it prevents discarded batteries from filling up landfills. Although rechargeable batteries are designed to be used for three to five years, they do eventually need replacement. Knowing when to get rid of a rechargeable battery is mainly based on whether it can still power electrical devices.
Instructions
1. Insert the batteries into a battery charger, paying special attention that the battery ends are positioned as indicated on the charger.
2. Plug the battery charger into an electrical outlet as indicated by the charger's instructions. Some chargers simply plug straight into the outlet, while other chargers are powered by an AC adaptor plug.
3. Allow the batteries to charge for the amount of time recommended by the battery or charger manufacturer. In general, it will take between one to eight hours to fully charge the batteries, depending on the power of the charger.
4. Insert the fully-charged batteries into a device. It's best to choose a device that you have been using for a while, and not a new device. It is much easier to monitor the power usage of devices you have already used.
5. Monitor how long the batteries power the device. Over time, rechargeable batteries will not retain their charges. Thus, they will lose power much quicker. If you notice that the device does not run for as long as usual, it is time to replace the batteries.
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