[zeropointbug]

That's exactly right Paul, every little bit of voltage makes a big difference in power, and to some, (me included) SYSTEM EFFICIENCY. The higher the voltage stays under load, the less power is wasted, and the more energy you have available to make a longer race, important for those longer 30 - 40 min mains where you want to size the pack just right... you want to only switch packs once in a race, so you want the smallest possible pack.

You may not EVER come near the 45C rate, but that's just the way they are rated.

You can use a pack like the 25C CX G3 lipo packs that have higher mah/g, but the voltage drops more, so that benefit is reduced, and IMO, I would rather have all the power you need, and have almost the same overall energy density. Plus, the lower rated packs, the higher rate you discharge them, the more mah capacity they lose, more so than packs like a 45C rated.

ThunderPower has 50C/100C packs if anyone didn't know too, but they are too expensive to make the difference worth it.