I am a french owner of a defy phone.
I thought my phone was screwed up, but thanks to this thread I was able to charge a phone and I could flash it again. Thank you again, and I hope that google has translated what I meant
It's not so difficult to do but you have to be carreful and accurate.
The procedure I followed was to remove some plastic at the tip of the red and black and caught the two by putting the battery respectively the red to + and black to -. It holds well, but of course, do not hang the phone.
Be patient and do not let anything rash, I have two left hands (French-speaking to say not very handy) so doable by anyone, just do not connect the USB cable if you are unsure of what is did.
Good luck, there are no problems only solutions