Super H 6v to 12v

Whats the battery of choice when converting to 12v? Battery under tank.

The largest CCA battery that fit in well

I try to commonize my pickups with my larger tractors, so if I got in a jam I can pull a tractor battery, etc. So I try to use the Group 78 battery.

I have another battery (forgot size) that's on the Fcub and Super A, mainly driven by the only size that would fir the Super A.

If converting from 6 to 12 volt and you're gonna keep the 6 volt starter DO NOT USE A SUPER BIG HONKIN HIGH CCA BATTERY....

The reason is 12 volts (mid sized battery) is gonna crank her over plenty fast enough anyway even with a moderate sized battery AND ITS LESS OF A SHOCK AND NOT SO TOUGH ON THE STARTER DRIVE MECHANISM

If you keep the 6 volt starter and use a large high rated 12 volt battery its just that much harder on starter drives and starter nose cones and the flywheel

I converted MANY from 6 to 12 and kept the old 6 volt starter and never had problems BUT I PURPOSELY DID NOTTTTTTTTTTT USE A BIG HIGH RATED 12 VOLT BATTERY

Another thing that can reduced starter drive and starter problems if you use a 12 volt battery on a 6 volt starter is to use smaller then normal battery cables such as maybe 4 Gauge versus No 1 or 2 or 00

YES it will still work with a high rated battery but its less stress on the starter drive and starter and flywheel if you use a more moderate rated 12 volt battery AND STILL A SMALLER 12 VOLT BATETRY WILL CRANK THAT 6 VOLT STARTER PLENTY FAST

John T

I'm not sure how big a battery fits in the battery box under the gas tank, it's much smaller than the seat base battery box.

I use a group #65 12V 1000CCA sears DieHard Gold in my Stage II Super H because I use 2 of the exact same battery in my '96 F-250 diesel pickup. I put the first DieHard in the tractor in 1995, replaced it in 2015, TWENTY YEARS.

Sorry I cannot agree with you on this. I use the biggest I can fit in any of my tractors and all but one where 6 volt units. In the winter when I need one the higher CCA helps a whole lot. I've had to start tractor at zero or below and the bigger CCA help a whole lot. Ya I have started tractors on lawn mower batteries but would not even try that I the dead of winter

The old one in the wife's car. LOL I agree that a somewhat weak battery will crank a 6 volt H starter pretty well. They usually are easy starters anyway.

No problem Rich, if we all agreed it would be a boring world lol thanks for your thoughts my friend....To each their own I say

NOTE I'm ONLY talking about the posters question when a 6 Volt tractor is converted to 12 and if ones keeps the 6 volt starter !!!!!!!!!!!!!!!!!

Regardless, its a simple electrical and physical FACT that a lighter rated battery doesn't store as much nor can supply as much energy and initial Cold Cranking Amps CCA as a higher rated battery. With a higher CCA rated battery you can get more initial energy and more initial amps which is higher stress on starter drives and starters and flywheels

SUREEEEEEEEE you can use a high rated battery and SUREEEEEEEEE never had problems and SUREEEEEEE its been done (me included lol but I have seen damaged 6 volt starter drives and 6 volt starters when using big 12 volt batteries grrrrrrrrr but also Ive seen NO problems whatsoever when I was a used tractor dealer !!!!!!!!!!!!)

BUTTTTTTTTT a smaller battery that stores less energy just cant deliver as much energy and as many amps and be as hard on starter drives and starters as a high rated battery THATS JUST SIMPLE SCIENCE AND PHYSICAL AND AN ELECTRICAL FACT !!!!!

NOTE theres no problem or argument as to anyone can use what they wish and are entitled to their own opinions, but facts are facts, a lower rated battery yields less stress on a starter drive and a starter then a high rated battery. I'm sure anyone with electrical knowledge including yourself understands that, WELL DUH

On MOST applications I use a high rated battery, its ONLY when converting from 6 to 12 and keeping a 6 volt starter I HIGHLY RECOMMEND NOTTTTTTTTT use the biggest or highest rated battery you can find and prefer a moderate sized unit..They still ("typically" maybe not always) spin that starter reallllllllllll fast and long enough, no problem.

As always USE WHAT ANYONE LIKES (and as a used tractor dealer and farmer Ive seen or converted manyyyyyyy) and all are entitled to their own opinion, but its just a FACT a lower rated battery cant store nor deliver as much initial starter amps

God Bless you Rich, take care now. Use bigger batteries as you wish and I'm sure they work BUT its higher risk on starter drives and starters then a lower rated unit PERIOD That's allllllllllllll I'm saying nothing more lol

NOTE like you I use high rated batteries ESPECIALLY on 6 volt tractors on all other applications yayyyyyyyyyyyyyyy we agree

John T

Have one from a big box store that starts with a W. Don't remember the number but 525 amps and fits in original battery box and cables will work through the original places in box and lid works. In since 2011 and still cranks good. Just measure the box ID and where you want the terminals and start measuring the batteries. If original lid with rubbers I had to remove 2 and use a thinner rubber.

I do not know the size, but would recommend to change the starter drive out to the new style, much easier on ring gear.

The last Super C I did, I put a $19.00 lawn mower battery in it.

David, when you state "but would recommend to change the starter drive out to the new style, much easier on ring gear

I AGREE 100% I've heard that from many gents ESPECIALLY if they keep a 6 volt starter on a 12 volt conversion as its a strong hard KICK and stress on starter drives and starters and flywheels. That's why as I posted below I DO NOT like to use a big heavy high rated battery in that case although I normally do othwerwise........

John T

I've done that at time but only in the summer. A lawn mower battery will not cut it in the winter on a real cold day

The original poster did not state whether the tractor was going to be used all year long, or if it's a collector toy which will only be driven in the summer. That could have a bearing on this whole conversation.

have to agree with John T 100%. you certainly don't need a big battery to start an H. !2 volts spin the Bendix twice as fast into the ring gear. This high performance modification shortens the life of the Bendix and ring gear.

IMHO, 12V works great, but does tend to sling the starter in quite a bit harder, but my 44 worked that way for 40 years. I would recommend having a big enough battery, but downsizing the cables going to the starter and upgrading the starter drive to the new style. Having the bigger battery gives you plenty of storage, but the downsized cables create a little resistance when the starter is first engaged.

Is the new style starter drive still readily available??

(quoted from post at 22:54:59 06/22/18) Whats the battery of choice when converting to 12v? Battery under tank.

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The group 26 battery is what I have found to fit the battery box the best that was designed for the group 1 (one) 6 volt battery box, when doing a conversion from 6 to 12 volts.

I believe it is, I got mine from this site.