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Why there are some power bank’s charge and discharge’s speed become faster after using for a while?

March 08,2019 -

Q:Why there are some power bank’s charge and discharge’s speed become faster after using for a while?
A:Normaly,the using life of original A level’s chip is more than 500 times.when using times come near to 500 times its charge and discharge speed would be faster.if there are any power bank have this situation without using too much,then it can be scrapped.

 
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