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Tractor Talk Discussion Board |
Re: Voltmeter or Ammeter
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Posted by souNdguy on December 18, 2006 at 06:41:08 from (12.65.72.151):
In Reply to: Re: Voltmeter or Ammeter posted by Hal/WA on December 17, 2006 at 18:52:53:
"I think a volt meter tells me more useful information than an ammeter. ..... It should tell me if the engine will turn over before I ever activate the starter switch". Nothing could be farther from the truth. A heavilly discharged battery can show a residual voltage in the 12v range, that drops to 2-3v when it is put under load... thus just having a volt meter tell you that there is 12v on your battery will not tell you if the 100-150a load of the starter will be able to be sourced from the battery. I'm of the opinion that a amp meter will tell you more about the 'condition' of your charging system.. that is.. the capability of your charge device, your battery, and or your loads. Reading an ammter correctly, over time, and you should be able to tell when your battery is going south... Soundguy
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