this is what we recomend....
store batts at .9 per cell....when you go to charge them put them on a tray...we use the integy zero thirty...then charge at 6.0, when your done with your run discharge them at 35 amps down to 5.4, store till next charge and repeat cycle...
as for the spintec, the IB cells DO NOT like them....they do weird things to the cell
usually use a .03 cutoff
hope that helped..
im sure peter will chime in when he gets into the shop