reed cundiff wrote:
Amp hours is obtained by multiplying voltage of battery by its amp-hours
6V battery with 300 AH capacity is 6 x 300 = 1800 Amp-hours
12V V battey with 150 AH capacity is 12 x 150 = 1800 amp-hours
We have 180 amp-hours at 54 V which is 9720 amp-hour
So eight 6V batteries at 300 amp-hours would give 14,400 watt-hours or 2400 amp-hours at 12 V or 1200 amp-hours at 12 V so we come up with the same answers so how am I wrong?
Amp hours is amp hours. That is what the AH stands for when you type 300AH.
Watt-hours is what you get when you multiply the voltage times the amp-hours.
Also you said "or 75 AH at 24V (four 6 V batteries of 300 AH capacity)."
Four 6V 300AH batteries in series would give you 24V at 300AH.
Perhaps you are thinking about capacitors. When you series similar capacitors the voltage increases but the capacitance is halved. Thus a 50V 100uF capacitor in series with a 50V 100uF capacitor is equivalent to a 100V 50uF capacitor*.
* but in practice you need to be careful as the voltage across the series capacitors may not be distributed evenly due to manufacturing differences
