Issue wit Mogul After Battery Drained

[mchova01]

I have a Sprint Mogul and I’m running into a few issues since the battery was drained recently:
1) The phone will randomly reboot for no apparent reason
2) Every other outgoing phone call will not work, I get a message that the call was lost and the phone reboots by itself
3) About 50% of the time it gets stuck on “No Radio” screen, and the power button stops working. At this point I have to remove the battery and try again
4) It does seem to fine if its running on external power (plugged into PC or charger)
5) It now runs out of battery power very quickly
6) Doing some actions seems to engage the speakerphone for a second

It was fine on Saturday and I didn’t get a chance to recharge it and use it again until Monday . I have not installed anything new recently, and the only thing I’ve done is upgrade the OS to 6.1 using the download on the Sprint/HTC site a few months ago and added Google Maps on the same day. Sprint wants $35 to look at it and more to replace the battery, but that has been ruled out so it seems silly to go down that route.

Has anyone run into this issue after a battery was drained? What are my options to fix it? I have tried a new battery and the current one does recharge.