In warm weather a single group 31 battery will deliver enough current and maintain tolerable terminal voltages. The Mannheims with a 3KW starter will draw approx 450 amps if the starter terminals are kept at 10V. The same application with a battery that can maintain only 8V while cranking will draw 570amp. This of course causes a viscous circle of more voltage drop across each connection,cable and winding. The higher current increases the voltage drops, which causes the starter to draw even more current. As previously stated.A world of difference what you can get away with at temps above 50F vs. below 50F. Battery available energy drops rapidly as approaching freezing temps. While the engine becomes more difficult to turn. And higher cranking rpms are required to warm the air in a combustion chamber surrounded by colder metal.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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