^^+1 check to make sure the battery is - to+ and not + to +. and you can tell the difference between lipo and lith-ion on xmods because lipos are the flat packs like this
http://www.atomicmods.com/ZoomImage....roductID=10398
and lithium ion is the circular cells that look like blue AA's or AAA's. like this
http://www.atomicmods.com/ZoomImage....roductID=11015