I have a red x through an empty battery icon near the top right of my screen.

When ever I search for a solution all the results that come up are for blackberry and I'm not sure if it means teh same thing on iOS. The icon looks like an upright battery that has been drained and there is a small red x in the lower left of the icon. I've reset my phone, respringed the springboard, and plugged and unplugged it multiple times. The phone says its charging and nothing seems wrong so far, but the icon wont go away.