[glassdoctor]

You have it right... it's just that the higher mah capacity equals higher amp capability from the battery.

For example... the 12kmah pack will be able to crank out twice the amps as the 6k pack... with the same drop in voltage. This only matters really if/when you are puching the battery near it's limits.

If you parallel nimh packs... run two 14 cell packs together, the same thing would apply: double the runtime and the pack would run cooler and more punchy because it's not working as hard.

And it varies with the brand of battery.. some 3500mah lipos will outperfrom another brand's 6000 or 8000. It's like comparing a GP4300 to a generic crap cell... both are 1.2v but they put out a different amount of power.

You can go really lightweight with a 4s 5000mah pack for example... either from maxamps, kokam, flightpower, thunderpower, tanic... any good brand high rate pack. Just avoid the generic cheapie stuff... definitely stay away from ebay and hongkong shops.

Or you can go bigger and get more runtime... and a little more punch assuming the cells are of the same quality. With really big packs like 10-12k... you can get away with lower rated cells because of the huge capacity.