Normal charging at 1C:
If your battery is 2000 Mah, then 1C = 2.0 amps
if your battery is 1500 Mah, then 1C = 1.5amps
If your battery is 800 Mah, then 1C = 0.8amps
Charge according to the capacity of the pack, set it at 1C or below. Charging time at 1C is about 1 hour. this is normal for all lipo batteries.
More importantly as mentioned, is to set the voltage to the correct cell count.
1s = nominal 3.7V, charged 4.2V
2s = nominal 7.4V, charged 8.4V
3s = nominal 11.1V, charged 12.6V