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How to Test Rechargeable Battery Chargers

If you have multiple battery-operated devices that use AAA, AA or other replaceable batteries, you likely go through many batteries. A battery charger allows you to purchase rechargeable batteries and reuse them hundreds and even thousands of times. However, it may be hard to determine if the rechargeable batteries are nearing the end of their usable life or if the charger is malfunctioning. You can test the functionality of the charger without any special tools or equipment.

Instructions

- 1
  Open the battery compartment of the battery-operated rechargeable device. Many devices have battery compartment covers that slide off or unhinge.
- 2
  Insert the rechargeable batteries into the device. Close the battery compartment. Power on the device and use it until the batteries are drained. The device may suddenly shut off or notify you that the batteries are low.
- 3
  Open the battery compartment and remove the batteries. Insert the drained batteries into the battery charger.
- 4
  Plug the battery charger into a wall outlet. Look for a status light on the charger that will light up when powered. If the light does not come on, try another wall outlet. Note that some chargers may lack a status light or the charger may still work even if the light malfunctions.
- 5
  Leave the charger plugged in overnight or for a few hours. Unplug the charger. Remove the batteries and insert them into a battery-operated device. Attempt to use the device. If the device functions, the battery charger successfully charged the batteries.

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