This is well beyond what a general beginner would encounter. For the most part, many are just trying to learn to successfully fly what they bought let alone trying to figure out if the internal impedance of their batteries is sufficiently low.

Needless to say, the original question was geared toward if the user could/should use a 6 volt pack vs. a 4.8 volt pack in the same amperage rating. The answer to that question is somewhat of a qualified YES. The 6 volt pack with the same mah rating as the 4.8 volt pack will not last quite as long, but it will work with most receivers. It is best to check with the manufacturer of the receiver to see it it will work with the 6 volt pack. If so, then, with the qualification noted above, it will work. If the manufacturer states 4.8v only, then it behooves the user to stick with 4.8 volt packs.

CGr.