7.4v 5000mAh 2c lipo

C=5A

Here is a site that will help with the basic stuff with Lipo. If these are new batteries I would break them in. Some people say you don't have to with Lipo but I feel if you do you will get more cycles out of your packs. The first three or four charges don't charge at the full c rating for example above don't charge at 5amps, charge at 2.5amps. Also don't run them down till the LVC is activated, stop way before that happens. These little tips will just help condition a new battery and help provide more cycles.

http://sites.google.com/site/tjinguy...the-variable-c
http://www.rchelicopterfun.com/rc-lipo-batteries.html

PS I would get a cell checker ( something to check the voltage in the field with a lipo).