I bought 2 of the 4400 packs.
They run great, have punch and run time.
I balanced them after getting them and already had charged them 5 times each and one needed it a little and the other was perfect.
I have an ICE charger and I run a GTB with a 4.5L
I am using 1800-1950mah per 5 min race.
It is taking 45-50 min to recharge.
So having 2 packs is the way to go. Our round are run fast enough that I cant get one pack charged before the next round.
Buy 2 of them they work great.
