Here are a few reasons:
1, the battery life is shorter. Take mobile phones, laptops as an example, such devices are using lithium batteries, its service life will be reduced with the number of uses, frequency, time, environmental changes, its performance will gradually reduce, charge and discharge efficiency will also be reduced, and this will lead to faster battery power consumption, although it seems to show 100%, but in fact the battery has been in a continuous charging and discharging state, This shows \"charging\";
2, battery quality or line problems. The quality problems of the batteries used in some devices, coupled with the short circuit of the line, may cause the power consumption of the equipment to become faster.
If there is a problem with the quality or line of the battery, it will cause the percentage of electricity displayed to be inaccurate, and the charging IC system can not detect the true state of the battery, so even if it is charged to 100%, it will still show \"charging\