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Old 01-27-2019, 02:50 AM
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Turion Turion is offline
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Join Date: Nov 2009
Posts: 2,449
Boost module.

Running an inverter between the positives you are hitting battery 3 with 12 volts to begin with, which is your potential difference, but as the primary batteries go down and battery 3 charges, your potential difference drops below the standing voltage of battery 3. That's an incredibly costly way to try and charge battery 3, and your results will reflect that. The purpose of the boost module is to maintain the input voltage hitting battery 3 at 14.5 volts or HIGHER so that it is ALWAYS getting hit with a higher voltage than its standing voltage. Your results will reflect THAT as well.
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