I'm curios abouth amp!

HI
Give the same lipo same amperage at different capacities?
For example. After a while of using my lipo (5000mah 20C) it's capacity drop to 4000mah. Can that lipo still give 100A or it's drop to 80A too?

[nativepaul]

It is 80, the "C" rating is what multiple of the packs capacity it is safe to discharge a pack at so a 4000mAh = 4Ah 20C pack is good for 4x20=80Amps
if you need a 100Amp capable pack but only want the weight/size of a 4000mAh you need to move up to a 25C pack as 4000mAh = 4Ah, 4Ahx25C=100A

I know how to calculate current but I want to know if a 5000mah 20c lipo keep giving 100amp current when it's capacity drop to 4000mah.

most likely not, apparently the cells are beginning to weakin, so i would say they might not even put out a full 80 amps as of now