1, the battery itself is of poor quality
2, use inferior charger
3, long time operation in high temperature or low temperature environment
4. The battery is connected to high-load peripherals, and the plugging and unplugging is not standardized.
5, excessive charge and discharge (the battery used to the remaining power is less than 3%). The circuit is protected, but it happens occasionally.
6, not fully charged and discharged (not used up and refill, but want to use it, want to charge it)
7. Long-term use of batteries in strong electromagnetic radiation (which will interfere with the conductivity of the metal inside the battery)
8. Use the battery under wet conditions for a long time (the wet battery will have lower performance)
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