Originally Posted by
AntlerRacing
I'd like to parallel charge four (4) 1500mAh 2s LiPo packs ... at 6 amps....
Originally Posted by
the rc guy
unlikely you will be able to charge these 4/4cell 1500mah batteries at 6 amps.. maybe 3amp you have to factor in watts used to charge so what is this charger 50/60 watts?
He said 2S packs, however I do believe his charger is limited to 50W @ 5A max charge rate.
He was correct that 4 x 1500mAh = 6A charge rate for 1C, though the charger will max out at 5A which comes out to 5A/6A = 0.8C
Also note that when charging 2S/4P will not be the most efficient use of the charger.
Consider Ohms Law: W = V x A
4.2V x 2S x 5A = 42W
Sure, 42W is pretty darn close to the 50W max of the charger, but what if you wanted to take advantage of the full capability and squeeze that extra 8W to reduce your charge time by 50W/42W = 19% faster!
It is possible to charge 2 packs in series + 2 packs in parallel, all 4 packs would then max the charger at 50W output
http://scriptasylum.com/rc_speed/lipo.html
