Maintenance and Care of Nickel - Metal Hydride Batteries

　　Proper maintenance and care are essential to ensure the long - term performance and lifespan of Ni - MH batteries. Firstly, storage conditions matter. When not in use, Ni - MH batteries should be stored in a cool, dry place. High humidity can cause corrosion of the battery terminals, which may lead to poor electrical contact and reduced performance. Storing the battery at an appropriate temperature, around 20°C, helps to minimize self - discharge and degradation.

　　Secondly, charging and discharging practices are crucial. Overcharging and over - discharging should be avoided. Overcharging can cause the battery to overheat and may lead to the breakdown of the electrolyte and damage to the electrodes. Many modern chargers are equipped with over - charge protection circuits, but it's still a good idea to monitor the charging process. Over - discharging, on the other hand, can cause the battery voltage to drop below a safe level, which can also damage the battery.

　　Regularly cleaning the battery terminals with a dry, clean cloth can prevent the buildup of dirt and corrosion. This simple maintenance task ensures good electrical connection between the battery and the device it powers. Additionally, if a Ni - MH battery is used in a device that is not frequently used, it is advisable to charge and discharge it at least once every few months to keep the battery in good condition.

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