Battery charging principle is that converts electrical energy through electrochemical reaction to chemical energy stored in batteries, storage of chemical energy again by electrochemical reaction is converted to electricity power supply device is used. Before the new battery factory, the factory has a recharge battery power, because the battery in the factory to sell to the user in the process, the battery may be stored for a period of time, and rechargeable batteries (especially the lithium battery) has a "sleep" characteristics, the longer the battery storage time, the battery "hibernation" state, users get the batteries in order to ensure that the battery can respond to the best working state, must be carried out on the rechargeable battery activation (eliminate battery state of "dormancy"), the activation method is commonly: three times before using a new battery to charge for a long time.