Do NiMH Batteries Deteriorate?
Nickel-metal hydride (NiMH) batteries are a type of rechargeable battery that have become increasingly popular over the years. They are commonly used in devices such as digital cameras, portable gaming devices, and remote controls. But do NiMH batteries deteriorate over time? The short answer is yes, they do. Here’s why.
Self-Discharge
One of the primary reasons that NiMH batteries deteriorate is due to self-discharge. Even when not in use, NiMH batteries will slowly discharge over time. This means that if you leave your device unused for an extended period of time, the battery will lose its charge. As a result, the battery’s capacity will decrease over time, and it will not hold as much charge as it did when it was new.
Memory Effect
Another reason that NiMH batteries deteriorate is due to the memory effect. This occurs when the battery is not fully discharged before being recharged. Over time, the battery will “remember” the amount of charge that was left unused and will not be able to fully charge to its maximum capacity. This will result in a decrease in the battery’s overall capacity.
Heat
Heat is also a factor that can cause NiMH batteries to deteriorate. When exposed to high temperatures, the battery’s capacity can decrease rapidly. This can happen when the battery is left in a hot car or when it is used in a device that generates a lot of heat, such as a camera flash.
Overcharging
Overcharging can also cause NiMH batteries to deteriorate. If the battery is left on the charger for too long, it can cause the battery to overheat and damage the cells inside. Over time, this can result in a decrease in the battery’s capacity.
In conclusion, NiMH batteries do deteriorate over time. Self-discharge, memory effect, heat, and overcharging can all contribute to the battery’s deterioration. To extend the life of your NiMH batteries, it is important to store them in a cool, dry place, fully discharge them before recharging, and avoid overcharging them. By taking these steps, you can help to ensure that your NiMH batteries will last as long as possible.
What is Nickel-metal hydride NiMH batteries?
