Posted by JDEM on May 18, 2019 at 09:54:50 from (47.33.231.52):
The question was asked yesterday about a source for low price batteries for our older tractors.
I have been using Walmart short-warranty batteries for years. GREAT value I have yet to see any store in my area come close to this deal (northern Michigan).
I have compared these batteries side by side. I have weighed them. I have load-tested them. NO difference I can find with low price versus higher price models except for warranty.
I just checked the type 26 battery in my John Deere diesel backhoe and it is 6 years old. I just load-tested it and it checks exactly the same as a brand new one I just got for my Ford Jubilee.
I find claims of "cold cranking amps" to be kind of meaningless. I wish all batteries were rated in amp-hours or reserve-capacity which has more meaning in the real world. Especially in old tractors that often have small low compression engines with low cranking amp demands.
I have yet to find a battery warranty worth the price I have to pay for it. I wonder why some other companies don't try selling batteries minus the expensive long "sort of" warranties?
I checked actual starter motor amp draw at 50 degrees F today. 300B John Deere diesel backhoe. It cranks at 210 amps @ 9.8 volts. Obviously if it was zero degrees outside the amps would be higher. Not an issue for many of us. The Walmart type 26 battery I paid less then $50 for six years ago? Puts out 300 amps at over 11 volts for at least 15 seconds. I cannot test any longer then that because my load-tester overheats and shuts itself off. Much more then enough for my diesel tractor.
I guess if I had a diesel log skidder sitting in the woods with no block heater that I had to start at below zero F temps? Yes, then I think I'd want to find the highest rated batteries I could squeeze in. But for many if not most of us with old farm tractors?
I also test the amp draw on my 134 cube gas engine Ford Jubilee. With a 12 volt battery (6 volt start) it cranks at a steady 160 amps @ 10 volts. Again, the cheap Walmart $49 battery is more then enough.
So here are some actual tests. High science? No. Good enough to give some real-world facts though.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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