Here are comparisons of two pairs of batteries -each pair exactly the same weight. Each comparison has a pair of 6 volt batteries in series - compared to a pair of 12 volt batteries in parallel. Note that are all pretty much equal. I also added on big 12 volt battery that has equal weight to two of the others. It beats them all.
Note that for a fair comparison, you have to compare batteries of equal weight. Stating that your best expert friend Joe Blow changed his 6s with 12s and does better - is useless nonsense.
First comparison:
BCI type 4 47 lbs. wet weight 6 volt CCA 1000 amps RC 270 minutes
BCI type 3ET 47 lbs. wet weight CCA 500 amps RC 120 minutes
Two of the type 4 six volt batteries in series equals – CCA of 1000 amps and RC (reserve capacity) of 270 minutes.
Two of the type 3ET twelve volt batteries in parallel equals – CCA of 1000 amps and RC (reserve capacity) of 240 minutes.
Second comparison:
BCI type 7D 60 lbs. wet weight. 6 volt. CCA 950 amps RC 350 minutes
BCI type 17TF 60 lbs. wet weight, 12 volts. CCA 530 amps RC 150 minutes
Two 7D 6 volt batteries in series = CCA 950 amps and RC 350 minutes
Two 17TF 12 volt batteries in parallel = CCA 1060 amps and RC of 300 minutes
Also - here is just one big 12 volt battery that weight what the other two would weigh . .
BCI type 908D, wet weight 120 lbs. 12 volts. CCA 1375 amps RC 430 minutes.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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