I have a pair of the 5800 mah batteries.
I am using the hitec x4plus charger at 3 amps but the leads for the banana plugs are pretty short to fit in my lipo bags. The balancer extensions work great.
Is there a concern about splicing in a length of 14 or 12 gauge wire to make the leads longer?
3 amps over less than 1 foot should be nothing at 8.4 volts.