Nickel can be used on NiMH batteries

1. Features of Ni-MH battery:

Ni-MH battery (NIMH) is one of the most widely used green batteries in modern electronic products. It has the advantages of large single-cell capacity, stable discharge characteristics, strong versatility, and low heat generation. The disadvantage is that it is large in size and weight.

2. Characteristics of Ni-MH battery:

The nominal voltage of Ni-MH batteries is 1.2V, which can reach 1.35V when fully charged, which is similar to the voltage of ordinary AA alkaline batteries and can be basically used. The discharge characteristics of Ni-MH batteries are very good, and the discharge curve is also very smooth. When the power is almost exhausted, the voltage suddenly drops, which is close to nickel-chromium batteries, but the instantaneous discharge current is not as good as nickel-chromium batteries. In addition, the Ni-MH battery uses a mercury-free design, which is of great significance to environmental protection.

3. The structure of Ni-MH battery:

AA NiMH batteries have the same appearance as ordinary AA batteries. Like nickel-chromium batteries, nickel-metal hydride batteries also use the reversible reaction of chemical substances to achieve the charging and discharging process. Therefore, during the charging and discharging process, a large amount of gas will be generated inside the battery, and the internal pressure of the battery is relatively high. Therefore, Ni-MH batteries are designed with exhaust holes for exhaust to prevent explosion due to excessive internal pressure. At present, the GP series batteries we have come into contact with cannot see the vent hole because a circular plastic sheet is installed on the top of the battery to prevent foreign matter from blocking the vent hole and to prevent short circuit between the positive cap and the negative shell.