Lipo questions...

[Nick]

Have a few questions about Lipos.

What does the 2s, 3s, 4s, 5s, 6s mean? I guess it is measuring the capacity or something but not to sure.

Do they come in loose cells, or like packs? Is the capacity of Lipos at 3300mAh be the same performance of capacity as a NIMH 3300mAh produce?

Where can I buy Lipos from? Are they allowed to be shipped internationally (due to them being flammable)?

Why do they need a special Lipo charger? Does anyone know what the "Great Planes Triton" is like for Lipos?

Thanks alot. :)