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Thank you both.
I knew I was right ...I mean the thought of me being wrong is unimaginable☺
He is always right as well.
I had to back down cause he is nit well and was starting to breath heavily....particularly after showing him Pauls winderful post.
The confusion comes from the use of watt hours for him.
Sharkbite.
Where I am at the moment haa 1100 amp hours for a 12 system...the batteries are on the way out so I am costing replacements...I have spoken with the guy supplying my brother in law and you just can not pin him down to answer one simple question " so how many amps is that?" He talks about ratings and how the draw rate gives different ratings but the way I have always approach the matter is how many amps...right or wrong I figure if 1000 amps I can use say 200 to 250 before a recharge but ...so here the daily requirement is 250 amps so hopefully 1000 amps is the size needed...as I type however I am not sure about having a correct approach...anyways I purchased 500 amp hours about 6 months ago for the shack where I was going to put my observatory...but mythinking is to get another 1000 amps of the same batteries bring the ones in the shack to the main house and all up boast a 1500 amp hour bank.
My brother in law was saying in effect six of "his" batteries would get 2000 approx amp hours, but he /they are talking watt hours it seems....anyways I said he was right simply to settle him down...but I think I will buy mine at the place I bought the earlier ones as they seem to approach things the way I do.
Alex
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