The issue of battery life on high-power appliances
The capacity of nickel metal hydrogen batteries(NiMH batteries) can reach 2700mAh, and they can be used for a longer time on low current discharge devices. However, when applied to high-power devices, their working time is significantly reduced and they require frequent charging. The main reason is that its voltage is 1.2V, which consumes power faster and has a shallow discharge depth when used for high-power devices.
High self discharge rate
The self discharge rate of NiMH batteries is relatively high, which is not conducive to the daily storage of batteries. For devices with low usage frequency (such as remote controls), they may run out of battery due to self discharge and require frequent replacement.
Potential memory effect
Although the memory effect of NiMH batteries is relatively small compared to Ni-Cd batteries, long-term shallow charging and discharging may still lead to a decrease in capacity. Lithium batteries and Zinc Nickel rechargeable batteries are less affected.
Poor temperature adaptability
The working temperature of NiMH batteries is -10 ℃~60 ℃. In high and low temperature environments, the performance deteriorates severely, which greatly affects the working time and cycle life.
NiMH rechargeable batteries perform worse than alkaline batteries or zinc nickel rechargeable batteries in high power consumption, high temperature, and low temperature scenarios. At present, its main application is limited to low-power devices that require frequent charging, such as razors and keyboards. Due to the inherent limitations of NiMH batteries, their use in smart devices and other scenarios is becoming increasingly rare, and they are gradually being replaced by other battery products.
