0.004181 kWh.
The capacity of a lithium battery is calculated based on voltage and current, where voltage is the potential difference between the positive and negative electrodes of the battery, and current is the current generated by the chemical reaction inside the battery. . During the charging process, lithium batteries absorb electrical energy and convert it into chemical energy for storage. Therefore, the longer the charging time, the more electricity is stored.
When the external battery is not used for a long time, do not store it fully charged for a long time, nor store it empty for a long time. A battery percentage near or below 50.% is more appropriate. If you can't figure out what percentage your battery has, as long as it's between 20% and 80% it won't make much of a difference. It is also difficultile for power banks to maintain 100% power.
The lithium battery itself has several protection functions. In order to prevent excessive discharge or overcharge of the battery due to misuse, a triple protection mechanism is installed in the single lithium-ion battery. One is to use a switching element. As the temperature inside the battery increases, its resistance increases accordingly. When the temperature is too high, the power supply will automatically stop. At a certain value, the micron-sized pores on the separator will automatically dissolve, preventing lithium ions from passing through, and the internal reaction of the battery will stop. The third is to install a safety valve (i.e. the ventilation hole). on top of the battery). When the internal pressure of the battery reaches a certain value, theSafety valve opens automatically to ensure battery safety.
In addition, the machine itself has a design that automatically disconnects when the charging circuit is fully charged and the charging circuit voltage is too low and is forced to stop and turn off, which may damage the system. “Battery” is very, very small. In recent years, there have been only three to five cases of lithium battery explosions. Of course, if the battery overheats due to design errors, this is still quite dangerous. Normal lithium batteries will only have adverse consequences such as accelerated aging when the temperature is too high (above 40 degrees). However, it cannot be called "damaging the battery", at most "damaging the battery life".