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Single 12-volt battery for 50 - what size

D

DrCharles

Member
I need to replace both 6-volt Group 1 batteries in my 50. They"re in series since the 50 has a 12-volt electrical system. So any 12-volt auto or truck battery that will physically fit under the seat and provide enough cranking amps should work.

I"m mostly motivated by price, since the cost of car batteries has really shot up in the last several years. One hefty 12-volt costs quite a bit less than two 6-volts, at least around here. If anyone is using a single battery, what group/size did you pick?

thanks
Charles
 
Find the biggest battery that will fit under your seat w/ the highest CCA. WalMart is my go to place. Never had an exchange warranty problem with them. Most batteries are made by few manufactures and sold under MANY names.
 

The JD 50 is really just a glorified JD "B"...

In my JD 520 I use the medium guaranteed 12V. battery listed for an "85 Buick" with a V-6..

Spins it over well any time of the year..

I use the same size in each of my Bolens Garden Tractors, the 520 and the 630..

You will not need any "Big" Battery or a lot of CCA..

I doubt these batteries have any more than 700 CCA and NO problems even if it is -15 degrees..
 
Check your height dimensions against a Group 31 battery.
They can be 1100cca or so.
 
I wrote out a reply but somehow the board ate it... anyhow I'm thinking of a Group 49/H8 since I have three cars that already run them. Will fit nicely (sideways) in the box, weighs over 50 lbs (a fair bit more than two Group 1's weigh), good for 100 amp-hours and plenty of CCA. $122 at Sam's Club for a Duracell H8 but not sure if they'll take one (or even both) Group 1's for the core return.
 
Check your Wal-Mart , they have $50.00 batteries , Look for Blue & white label , Measure your battery box , then measure the battery.
 
A 650 CCA battery will work fine unless you are planning on starting it when it's -20 degrees. Even then it might still do the job if the tractor pops right off. If a 650 won't do the job in warm temps you have other problems. I threw a 650 in my 630 for awhile because I had it on hand and it worked but if the temp was below zero it wasn't enough if the tractor didn't start first or second time over. I replaced it with a 850 CCA battery only because it was my loader tractor I relied on.
 
I use the same battery as my 04 F250 super duty takes. My truck get the new one and the old one for the truck goes in the tractor.
 
Really just a glorified JD "B"... ??? Really ???

How about power steering, live PTO, live hydraulics, duplex carburetor to name a few SIGNIFICANT improvements for a "50" over a "B"?
 
(quoted from post at 11:38:45 09/14/17) Really just a glorified JD "B"... ??? Really ???

How about power steering, live PTO, live hydraulics, duplex carburetor to name a few SIGNIFICANT improvements for a "50" over a "B"?
Click to expand...

Well, that certainly escalated quickly.

Since we were talking about battery size, I think it is fair to say that BrushHogPapa was speaking in terms of the motor size. Given that the bore and stroke are the same on both with the 50 having a slightly elevated compression ratio which gives it whopping 3 more HP, I think the point he made was just. I know some people get touchy about their favorites but a 50 is more like a B than it is an A, G, 60 or a 70 and the amount of battery needed for them, that I believe was the point.
 
I pulled the 6 year old Group 49 battery 900 CCA out of my '93 525i, replaced it with the new one, and dropped the old one into the 50. Fits very neatly sideways in the box, I just need to make a hold-down of some kind.

After a long afternoon going through the *really* ugly carb and checking air, fluids, etc., I fired her up. Spun the engine over like the plugs were out and pop pop here we go :)
 
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