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Message: <blockquote data-quote="pendlewitch" data-source="post: 1327755" data-attributes="member: 214663">Hi,It would be very rare that the starting capacity of a new battery ever reached 100%; it would be more likely between 85% and 95% so we never start off on a level playing field anyway.Lithium batteries need regular partial discharge and the smaller the depth of charge the longer the battery will last.Leaving batteries at a full state of charge for extended periods can be extremely damaging which is what I suspect had happened originally with you. Elevated temperature levels can also adversely affect battery life.If for example you let the battery run to say 50% and then recharged, you would get approximately 3 times more discharge cycles out of it than recharging it from dead. The figures get really interesting when charging from 90% capacity....almost 10 times more discharge cycles !</blockquote>