Hey
For the transmitter pack , you should set the delta peak cut off to 10 mV and the charge current to 1.0 A(if you want a quick charge that is).It'll take about 130 min(completely discharged pack) for full charge and then it goes to trickle charge automatically.
Go easy with your battery pack though . I mean you can go with 0.5A charging . You'll make twice the time (4 hours) but it's safer for the pack .
Excessive temperature raise during charging can cause a cell to vent and/or shorten the pack's life (cycles)
Cheers mate[8D]