John, Alastair, thank you for your perseverance, I know this subject keeps coming up and must be pretty tedious for yous guys.
About the FAO thing, I regret that and I apologise to the members of this forum.
I am a newbie to this board but am not a newbie to the internet. Being the miserable old git that I am entitled to be I do get irritated with the poor signal/noise ratio on the internet, for which I’m sorry.
It was silly of me to pick the 6CS-21P as an example and I mentioned the 20 quarts to indicate just how big and silly this was for an example.
The HT-1 is a much smaller and sensible choice from the same list.
I am not suggesting that I or anybody should buy or specify this type of battery. I used them here because I believe them to be genuine and unambiguously Deep-Cycle types and the data is available on the internet.
I don’t think they are available this side of the pond, although I have seen them on yachts.
These extreme examples were used to get away from the “Duff Guff” syndrome.
I see now the in series truth, the Volt double, the Amp/Hrs stay the same and I guess the Watt/Hrs double, clear as a bell
I believe I am up to speed with starter batteries and alternators and my interest lies purely with the domestic bank side of fings.
A little background as to my interest in the quest for “The Truth”. In about 4 years I, Imshalla, retire. One of two things will then happen. (1) I sell the house and buy a 57ft shell and fit-out myself, I was a boat-builder for 25 year and a carpenter for nearly as long. (2) I sell the house and ship to Crete. I have spent some time on Crete and have learnt that the power supply is not very reliable, especially in the remoter parts that I prefer so I will invest in a solar/wind powered back-up system. Hence my interest in deep-cycle batteries.
Time for a brew, I’ll be back
With part two