I just ordered it - will do a quick report when it arrives and I have had a chance to use it:
HTC ThunderBolt PowerSkin Battery Case | PowerSkin
HTC ThunderBolt PowerSkin Battery Case | PowerSkin
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Maybe I can't figure this out because I don't yet own a Thunderbolt, but what is the purpose of that rather ostentatious protrusion on the left side?
Thats where it plugs in to the micro usb port. The kick stand doesn't work though so I will wait for some reviews first. But it looks like a good idea.
So if this if just another battery, what's the point of the on off button?
Turn it off so it isn't trying to charge the phone battery at all times
It doesn't look like it would add much more bulk than an extended battery.