Lipo Balance Charge

[MarkLeeds]

How long should it take to balance charge a lipo after roughly 1 run. I have a reactor 500 charger and usually takes about an hour before the charger clicks off being fully charged. It starts off charging at 5 amps then drops off to about 0.5 amps till its fully charged which usually takes al least an hour, just wondering if that is normal, when i connect the lipo to start off there isn't much of a difference between the cells voltage so seems strange.

I plan on running a 2wd and 4wd car shortly and if it's normal to take this long to charge I will need another charger also.

Thanks