Unfortunately my current charging station is not efficient time-wise for anything over 4s 3000 packs as it is limited to 150 watts.
Well for a 150 watt charger you should be able to charge UP to 9 amps for a 4 cell pack. So charging your 4s 3200 pack at 2c (6.4 amps) would yield a charge time just under half an hour.
But if you have a bigger battery it would definitely take some time.