Hello guys,

About 3 months ago I purchased the conversion kit below for my bike.

http://www.greenenergyparts.com/inde...cbicycle2.html

I installed it and it worked fine.
After working it for a few months, I decided to upgrade to a LifePo4 battery and so I bought this one:

http://cgi.ebay.com/ws/eBayISAPI.dll...AQ%3AUS%3A1123

Once I received the battery, I plugged in the charger and left it overnight.
Next day, I went to try it onto the bike.

I connected the battery onto the bike but after 3 seconds it got very hot and some smoke came out of the battery. I disconnected it immediately to see what was the problem.

It turned out that the new battery's plug was connected in reverse polarity that the old one.

Now, I measure the voltage of the battery to 39V, but once I connect it onto the bike the voltage immediately drops down to ~10V and the bike doesn't even blink.

What I've done so far is:
Replaced the old battery and the bike works fine (haven't damaged anything of it)
Recharged the new battery overnight

Any help would be really appreciated here. Have I destroyed the battery?

Thanks in Advance
Nik