Deep Cycle Battery Charging From Alternator
Hello, May I ask for advice regarding charging deep cycle batteries from the alternator? I have read older threads, and understand opinions vary. The previous two 100Ah deep cycle AGM coach bat...
Forum Discussion
A standard starter motor coupled to an engine will draw a battery down to 10.9 - 11.4 volts. About 4 - 5 times the amperage of a lawnmower starter coupled to nothing.
An RV starter armature coupled to nothing like the lawnmower armature in the video draws a fraction of what an armature does in real life.
He could have jammed a piece of wood into the starter drive gear to simulate a more realistic test.
Lock rotor's duration 1-2 seconds would have blown his numbers right out the window :) Touching the input lead would have yielded 90 - 125 volts not 25.
But the video shows there is a difference. Better than nothing. Heavy electric winches are worse yet. A battery does absorb some of the transients but less than 25% of the total.
An RV starter armature coupled to nothing like the lawnmower armature in the video draws a fraction of what an armature does in real life.
He could have jammed a piece of wood into the starter drive gear to simulate a more realistic test.
Lock rotor's duration 1-2 seconds would have blown his numbers right out the window :) Touching the input lead would have yielded 90 - 125 volts not 25.
But the video shows there is a difference. Better than nothing. Heavy electric winches are worse yet. A battery does absorb some of the transients but less than 25% of the total.
