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Old 11-20-2012
macswift macswift is offline
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Re: Battery Sizing - am I crazy?

My suggestion is to go back to first principles and calculate your daily 12v requirements, take account of your onboard charging facilities (engine alternator, and maybe solar panels and wind generator) and derive your battery requirement accordingly. Take a look at Understanding Boat Batteries and Onboard Electrics and it will guide you through the process.
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