I think it's a firmware bug. If the battery lasts for as long as it should (3-5 hours) there's nothing to worry about.
My Nano clone shows that it's charged long before it actually is, and from the time when the battery level starts to drop on the display, there isn't more than 20min of playback left.
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For my dreams i hold my life...
I miss my Meizu M6SL... Currently rocking a Sony Ericsson w595 on Samsung in-ear phones. Does fine, but it's not a chipod...
