7-cell vs. 2s lipoly

[pedeboi364]

hmmm, how about a nice LiFe cell charger? I kind like the idea of A123, not gonna blow up on me (Im not a pro like ya'll) and maybe a 6.6v rx pack?

[BrianG]

Originally Posted by pedeboi364

hmmm, how about a nice LiFe cell charger? I kind like the idea of A123, not gonna blow up on me (Im not a pro like ya'll) and maybe a 6.6v rx pack?

Any charger with A123 profile, or has programmable CC/CV threshold will work fine. Just remember that lipo are 3.7v nominal and 4.2v "peak", whereas A123s are 3.3v nominal and 3.6v "peak".

Speaking of that, a 2s A123 pack will be at 6.6v nominal, but will be 7.2v right off the charger. Despite the fact that it doesn't stay at that high voltage too long, it's still a bit too high for a RX pack IMO.