I figured out my battery was dying and i had lesser battery backup day by day.. I used to get an admirable amount of juice left in the end of the day, but now I charge twice a day. I followed few steps and WOOHOO!! it works like a charm. I tries this on Nexus 1, HTC desire, Samsung Galaxy Note 2 and Note 3 and on Samsung Galaxy S5. DO THIS FOR LI-ION BATTERY'S ONLY DO NOT TRY THIS IN CUSTOM OR DUPLICATE BATTERIES Follow these steps to regain the battery life. 1) Drain your battery to 100%. Most often when the device switches off. It has 2%-4% as back up. You should dry it full. Keep switching on and draining until the device doesn't start. 2) Remove your battery and let it cool if its hot.
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