I would not take any chances of doing anything that is not suggested by the manufacturer of the battery. The first thing that I would be worried about is damaging the cells and ruining the pack. The second thing is violating the warrenty of rhte product and casuing one to have to bear the expense of replacing the packs due to that action.
Hence I would stick to the rates prescribed by the people who made your batteires for your own good. If your particular manufacturer says go ahead then what do you have to loose. Of course you paid for the product it is your right to do whatever you wish with them. have a great day.