Lookyj,

The TP 2100mah is way too heavy for the CP/CP Pro. These helicopters are most efficient when flown light. If you are looking to tame the heli down and get longer flight times, I would suggest the megapower or DN Power 1350 pack, which you can find at helidirect. Stay away from the Sonix 1200 pack, it claims 15c and I can say through experience that is bull.

I have been flying for almost a year and really like the feel of packs that weigh around 68 grams. I just bought two DN Power 10c 900mah packs from readyheli for $15.95 each. I fly the DN 2150 15c packs in my TREX and they are great. Hopefully the 10c packs are good.