1.5v Carbon battery.What is the reason for the decrease in battery capacity

　　Poor usage habits, such as overcharging, over discharging, and high-temperature storage environments, can cause irreversible damage to the battery, prolong its lifespan, and sometimes pose safety hazards. In addition, by closing idle programs, saving power reasonably, and using every drop of electricity to do more meaningful things in limited power, our mobile phone batteries are generally lithium polymer batteries, which are charged and discharged through a chemical reaction of electrical energy → chemical energy → electrical energy. This type of chemical reaction is easily affected by temperature. When the temperature is too low, it will greatly reduce the chemical reaction rate of lithium batteries, resulting in a decrease in the discharge current of the battery, directly leading to a decrease in the available capacity of the battery.

　　That's why in very cold environments, you may find that the battery life decreases, the battery jumps, and it may jump directly from 50% to 30%, or even shut down when it runs out of battery. However, don't worry, this situation is reversible and will not cause actual damage to the phone battery. When the battery temperature returns to the normal operating range, its performance will also return to normal. At this point, it is important to note that high temperature environments can also cause damage to batteries, and such damage is irreversible. Therefore, we should try to avoid exposing the phone to temperatures higher than 35 ° C, otherwise it may permanently damage the battery capacity.

　　In fact, the batteries of our mobile phones have a lifespan. This is because the components of the phone battery will gradually age during our use, and the lithium ion concentration will gradually decrease, which directly leads to a continuous decrease in the capacity of the phone battery. Under normal usage, after using a mobile phone for one or two years, the actual battery capacity is no longer as large as before. This is also the main reason why we feel that mobile phone batteries are not durable.

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