Thanks for making this post!

I'm having the same problem you described. so I brought a universal charger, charged the battery, but no success. when you got the needed boost, did it work back as normal? or did you have to reflash?
(Also I have multiboot with NITdroid, kernel power and CSSU)

I brought new a battery but that also didn't get past the Nokia logo screen and the usb logo doesn't show up so can't seem to be able to flash.

I'll try getting some other batteries, but I don't have high hopes after reading this http://www.gossamer-threads.com/lists/maemo/users/60684
... it may be the end for mine