Electricity is somewhat like water, it only flows from points of high Volts to low Volts. The amount of Amps that flow depends on the difference between the high voltage and the low voltage.
When you're starting the engine, your high Volts are the battery (12 Volts) and your low Volts are at the starter (0 Volts). It is very easy to get 200 Amps to flow when your low voltage is 0. The voltage can never go over 12 Volts because the limiting factor is the battery.
When you're charging the battery, your LOW Volts this time are at the battery (12 Volts). In order to get 200 Amps to flow INTO the battery, the charger has to produce a voltage that is much much much higher than 12 Volts.
Use the boost mode to CHARGE the battery, but turn it off before you hit the glow plugs next time.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let’s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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