This is a good one for lipo -

http://www.rchelicopterfun.com/rc-lipo-batteries.html



The best thing I'd advise for nimh is to dnload teh charger manual for the DTX Ice, it'll cover charging enough to get you started.

http://manuals.hobbico.com/dtx/dtxp4170-manual.pdf


The venom charger is ok. My opinion - you spent too much for what you got, but as long as it works, it will take care of light duty charging chores.