Hello Plow Hand, You will seldom find a volt reading stated with a temperature associatted with the reading. At 13V you are above battery voltage, so it is charging. It will eventualy go to 14V I'm sure. At 0 degrees you only have 65% of the battery capacity available for crancking the engine, SOOO at 13v she Is charging as much as the battery will take the charge. It is harder to charge a battery at -5 than at 70 degrees, that explains the lower initial voltage. At -5 below I would be close to a log about to go into the fire! Stay warm.........Guido.
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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