I searched and didn't find an answer to this particular issue, or maybe I didn't use the right keywords. I got a Motorola extended battery for my Bionic. Powered down, put the new battery in, tried to power up....nothing. So I plugged it in and when I hit the power button it starts to boot then stops, shows a battery with a '?' in it. I tried letting it sit on the charger for awhile - nothing. I tried putting in the original battery and calibrating it - nothing, but I didn't expect that to make a difference. Anyone seen this before? Thanks in advance.