Ios 7 to 7.0.2 battery failure / won't finish install

I'm stuck.  After first installing the initial iOS 7 upgrade, my battery meter showed 100 or 98 percent ALL THE TIME even after a long day.  Suddenly, for several days, it showed 2%.  It never seemed to enter shutdown mode due to low juice so I figured it was an iOS 7 problem.  Last night on Amtrak from NYC to DC I found a wib site that told about the 7.0.2 release, and another iPHone 4s user said that had 'fixed' or stabilized his battery problems.  Cool, I thought.  SO...I got home, and over wi-fi started the update.  IT went all the way through to downloading and beginning the install, but then crapped out-  it was plugged in the whole time to power.  It seems to have seen the battery low indicator and isn't recognizing that it is plugged in to wall power.
Now it's stuck mid-update.
Any suggestions, oh wise and learned ones?

Hi!
I am having the same issue.
I have upgraded my iPhone 4s to the new iOS 7 and since then my battery indicator is stucked at 44%. Now regardless how much I charge or how much I use, it is showing the same battery level.
Although this get refreshed when I restart the iPhone and it shows the current battery level and then again stucks at the same percentage. This was working fine on iOS 6.1.3, but is showing issues after the upgrade.
I have tried to restore it, reset settings by selecting Erase All Content and Settings, hard reset (power+home button for 10 sec) but still no good, it shows the same level of battery percentage at which it is since last reboot.
Although I was having iOS 6.1.3 ispw so I downgraded it again as Apple was signing iOS 6.1.3 at that time. Now the battery percentage is working fine. Therefore its not a hardware issue for sure and is just some bug with iOS 7.
Now I have again upgraded to iOS 7.0.3, and I am facing the same issue again. And now I can't even downgrade to iOS 6.1.3.
If you get some tips on how to solve this, then please share the same.

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