ZIPPY Flightmax?

Might be OT, so apologies, but I got given 2 of these brand new, thought about hooking them up in series. Anyone got any thoughts on this, they were given to me free so nothing to lose in theory!! Would these be OK to use with my MMM/2200KV do you think?

http://www.all4rc.co.kr/shop/shopdet...ch=&sort=order

also, they have one wire hole and a thin red lead that I guess is the balance lead, how does that work on these packs?

Also would I charge them seperately as a 2S each, or can you charge them both at the same time in series?
If seperately then I guess then when connected together they could be unbalanced?