Default [Q] "repair" batterie

Hi,

i just wanted to know if you know some tips, how to "repair" my batterie. Just 30% of the akku is working. So when it is about 70% the phone shut down.

I would buy a new one, but in june i can extenda my mobile phone contract and get a new Phone. So i don't want to spend now money for a new batterie.

I just thought you may know a way to get some more from my bat.
A very very special THANKS to Christian.Alliger for donating me a vts license.

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