ORIGINAL: bdavison
It has to be a typo. There are NO 8.4V lipos.
Lipoly cells only come in 3.7V cells. So all voltages are multiples of that.
1 cell - 3.7V
2 cell - 7.4V
3 cell - 11.1V
etc.
Are you sure its a Lithium Polymer(LiPo) or is it a NiMH battery?
take a look at this:
http://cgi.ebay.com/ws/eBayISAPI.dll...1835%26fvi%3D1