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Case Tractors Discussion Forum

which battary for case 730

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12-10-2005 18:29:21

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I have resently acquired a case 730 that needs battaries among other things.Do Iget more cranking power with two 6 volt or 2 12volt batteries? It is diesel. Thanks Al

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12-12-2005 07:54:01

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 Re: which battary for case 730 in reply to Al47, 12-10-2005 18:29:21  
Thanks for the comments and info.It gives me direction and hopefully I make the right choice thanks to all Al

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John Saeli

12-11-2005 08:37:08

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 Re: which battary for case 730 in reply to Al47, 12-10-2005 18:29:21  
I hate to confuse you with more opinion, but this is the real deal. We live in an area with cold Winters. We own a 730 Diesel that we use in cold Weather & NEVER Ether it. I've learned long ago that 2 - 12V Batteries in Parallel is best. Note that no manufacturer ever uses 2 - 6'V's today. 2 - 1,000Amp 12V's will give you close to 14V & 2,000AMP, & will spin the engine faster than any 2 6V's. 2 6V's will not give you that kind of power. Been there, Done that & Good Luck!!

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12-11-2005 08:08:05

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 Re: which battary for case 730 in reply to Al47, 12-10-2005 18:29:21  
Two batteries is a waste of money. With todays technology in batteries one 12 volt with 1000 cold cranking amps is more than is needed. Two 6 volt batteries will crank the thing for 5 minutes, but one 12 volt will crank it faster for 30 seconds. If a diesel is going to start it must be spinning fast to fire. If it does not start in 15 seconds it is not going to start. I have one big automotive 12 volt in each of my diesels and have never had trouble, even in the cold here in SD. A group 30 tractor battery will not cut it, and they are only good for 3 years. Automotive batteries are good for up to 7 years. If it is below 30 degrees a diesel should be plugged in for several hours before it is started. Extreme temperature changes are very hard on diesel engines. My diesels include, 2090, 970, 930, 2 830's, JD backhoe, and 2 diesel pickups. DK

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Bill from wisc

12-11-2005 08:04:01

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 Re: which battary for case 730 in reply to Al47, 12-10-2005 18:29:21  
I have a 730ck diesel, I have tryed using 2 12 volt batterys and have gone back to using two heavy duty 6 volts and make sure you have very good cables. I replaced the generator with a one wire alternator and it has served me well.

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12-11-2005 05:20:34

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 Re: which battary for case 730 in reply to Al47, 12-10-2005 18:29:21  
I am not absoulutely sure but I believe you get more amperage with 2 6V. And this I am sure of it is a law of electricity everything else the same double the voltage cut the amperage in half. I think this has something to do with why over the years for deisels most use 2 6V for 12 or use 2 12V for 24. Hope this helps.

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Gene Dotson

12-10-2005 18:50:21

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 Re: which battary for case 730 in reply to Al47, 12-10-2005 18:29:21  
I have had real good luck using 2 group 24F 12 volt batteries in a parallel circuit. I hook up each battery as a seperate circuit by grounding each battery seperate and running seperate hot leads to the starter relay. I have my 700 diesel, my 900 diesel and an IH 660 diesel all hooked up this way and the cranking power is excellent. Be sure to use heavy cables with soldered ends for good conductivity... Gene

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