Dodge Cummins Engine Concern

[SPYDERLK]

But preferable to two in series.

No self discharge problem with series hookup. 2 big 6V would be superior.

 

[MossRoad]

Really? My 1987 Chevy has the original calipers.

KY does not use very much salt on its roads.

 

[wmonroe]

Well it is "a sad day in Mudville" for those that are old enough to understand the phrase. The owner decided to sell it to a family friend of her father's (it was his truck, rip) and not to her friend, my wife. As a result I will not get the truck. Not happy, disappointed, all that, but, oh well. Since the owner had been thinking about whether or not she would sell it for months I had put off looking elsewhere as I thought this was a deal worth waiting for. Now I can look elsewhere without thinking that I missed a deal. I know I missed it, there is no thinking that I might.

That's too bad but if you are patient there are other good deals out there.

 

[RickB]

No self discharge problem with series hookup. 2 big 6V would be superior.

That must be why every tractor manufacturer quit using 6 volt batteries in series in the 1980's and the owners of earlier tractors using batteries in series have been reconfiguring cables and converting to parallel setups ever since. Not much to debate, so I won' t comment further.

 

[dodge man]

That's a bummer. On the good side you learned a little bit about Cummins trucks.

 

[SPYDERLK]

That must be why every tractor manufacturer quit using 6 volt batteries in series in the 1980's and the owners of earlier tractors using batteries in series have been reconfiguring cables and converting to parallel setups ever since. Not much to debate, so I won' t comment further.

So what is the reason? Space considerations preventing a large single battery that would essentially be 2 series 6s. The 6V battery is being supported in less and less variety.
,,,.Youre right ... Theres no debate that a larger number of cells [12 vs 6 cells] presents a higher number of potential failure points. And one weak cell in a // system takes down both batts.

 

[MossRoad]

Wether you have two 6v batteries or one 12 v battery, you have the same number of cells.

 

[SPYDERLK]

Wether you have two 6v batteries or one 12 v battery, you have the same number of cells.

Yes. The issue is connecting 2 12s in // to get the grunt of 2 comparable sized 6s in series.

 

[MossRoad]

Yes. The issue is connecting 2 12s in // to get the grunt of 2 comparable sized 6s in series.

Ahh. Thank you.

 

[RickB]

So what is the reason? Space considerations preventing a large single battery that would essentially be 2 series 6s. The 6V battery is being supported in less and less variety.
,,,.Youre right ... Theres no debate that a larger number of cells [12 vs 6 cells] presents a higher number of potential failure points. And one weak cell in a // system takes down both batts.

One bad cell in a series system results in an immediate no start. Simply not the case with a parallel system.

Read this thread:
Viewing a thread - Two 12 v batteries vs two sixes volt series&highlightmode=1#M3732771

And I admit to a mistake; IH abandoned 6V batteries in series in the late 1970's.