When the Lithium Battery is charging, be sure to set the voltage limit, then it can take into account the battery life, capacity and security. The optimal charging voltage limit is 4.2V. lithium batteries also have a lower voltage discharge. When the cell voltage is below 2.4V, some of the material be destroyed. And because the battery will be self-discharge, put the longer, voltage the lower, therefore, it is best not to put the discharge to 2.4V before stopping. 3.0V is an ideal discharge cut-off voltage. In addition to the voltage limit, the current limit is also important. When the current is too large, lithium irons can not enter the cell and will gather in the material surface.
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