I would not recommend 5 amps on your 3300 mah packs. At least not until you have a baseline for them and understand what thy want/need. Again, I'm no expert and hopefully someone experienced with your charger will chime in here, but mv and peak sensitivity have got to be related. Can't recommend a differnt "sensitivety" rating for your charger, however. Read the manual again. Maybe it will give some more insight this time. Again, try a slow..."balancing" charge rate of .30 or .33 amps if you can. Then charge them reguraly at 3.0 amps.