What is the use of the circuit board in mobile phone batteries?
Battery lithium elements in the presence of ions, high security. But the batteries in the overcharge, over discharge caused by high temperature, internal pressure increases are still damaged or even the risk of explosion. Battery protection board through the electronic device to provide over-current, over-voltage, over-temperature protection features, can effectively prevent accidents.
Non-lithium-ion battery charger does not have this charging characteristics, if the use of the LION battery charger will shorten the battery life, or even dangerous.
Lithium-ion battery cell structure of the charge and discharge voltage requirements are very strict, that is, charging current constant current, the battery side voltage with the charging process is gradually increased to 4.2V (4.1V) inflection point voltage to constant voltage charging, After that, the charging current gradually decreases with the charging saturation, and when the time is 0.01C, the charging is finished.
