Question Mark Battery Indicator

Hello,

I just replaced my battery this weekend. I have followed the battery calibration included with the instructions. However after the initial charge the battery indicator was displaying a question mark. I restarted the device and didn't think about it again. Then I used the phone until it died. I charged it fully again and today (day 2 after battery replacement) the question mark is back and won't disappear after restarting the phone.

Is the new battery defective or is there something else going on? Thanks in advance.

Okay so here is what is happening. The battery cable will not stay seated in the power on the MB. The screw at the top of the bracket will not work anymore because the part it screws into is broken. Is there any type of electronic glue that could be used to keep the battery plugged in or a way to fix the screw?