The life of an original charger is 2 years, and the original imported charger is about 2 to 4 years. Cell phone batteries have no age, but there is a limit on the number of times they can be used. There is no battery charging number is certain, so, although the mobile phone is lithium battery, do not need to discharge the power and then charge, but it is best to use the charge again, to reduce the number of charges to extend the purpose of battery life.
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Universal charging also has no service life, only according to the quality of the length of life.