[xelasnave]

My brother in law is going to purchase 6 batteries each of 2volts and rated at 420 amp hours.

The batteries will be in series to produce 12 volts.

His view is that he will have 6 x 2 volts to make up 12 volts and 6 x 420 amp hours or 2520 amp hours
with the 12 volts system.

My thoughts is that the amp hours will be 420 amp hours at 12 volts.

He is a lawyer so please cite your qualifications and reference something that sets out the science.

Thank you.
Alex