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Old 08-18-2014, 03:42 PM   #9 (permalink)
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I'd use Old Mechanic's method, but with an ammeter instead of a light bulb. That will give you an idea of just how much current is being drawn, instead of "Well, there's some..."

Since you have a drain that can completely kill a charged battery in 24 hours, you're probably going to see more than 1 amp. (Don't many batteries have 60 amp-hours in them?) You want less than ~250 milliamps, I think.

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