mobylette wrote: ↑
Tue Oct 06, 2020 9:45 am
I have read that: "Larger batteries of the same type and voltage hold more energy, measured in Watt-hours, which is simply their rated Amp-hours times their voltage. So they take longer to charge at the same voltage and amperage."
Of course that is true, but once charged that disparity is gone - totally. Take out the same amount of charge from either, and then replacing it, will need the same amount of replenishment for either the smaller or larger capacity battery. Sure if the battery size difference was huge, the larger battery might need a bit more - but that would be completely insignificant for different battery sizes used in a Morris Minor. On the other hand, of course, the larger capacity battery will be discharging at a lower ‘C’ rate, so may well need very slightly less recharge energy - but that is far too deep a consideration in this scenario.
Possibly need slightly less, if the battery chemistry is advantageous. You need to read more carefully what is written down. I expect they were quite right in what they wrote. Do try to get more water in either of those two buckets (quoted by trickydicky), when they are already full, and just watch what happens!