: Why doesn’t Current or mAh capacity doesn’t increase In series configuration of batteries

Question

First of all I know Voltage goes Up in Series and Capacity/Total Current in Parallel.

But I have confusions,

For example let’s say we have 2 Li-ion cells,
Both 3.7 volts and 2000 mAh or say 2 AH.

When their volts go up to 7.4 volts why doesn’t it go to 4000 mAh as well?
Where does the other 2000 mAh go?

I know because Battery is now delivering current at faster pressure (volts) but it still doesn’t explain why battery is not called 4000 mAh after It’s put in series.

-x-x-x-

In: Physics

Answer 1

Because it’s not just a higher voltage, it increases power too, that has to come from somewhere. Watts = ampere * voltage