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Old 25-07-2021, 20:59   #1
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Join Date: Oct 2016
Location: Southeast Alaska
Boat: Allweather 26
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Charging 48 Volt Batteries on 12v System

There is two ways I can do it on my boat. The batteries are for my epropulsion outboard. I have two chargers of roughly the same output. One is a 120 volt model that I can connect to my Victron 500 watt inverter. The inverter is just enough to run the charger. Or I can use a 12 volt to 48 volt charger that plugs directly into the boat's 12 volt system. Which is more efficient?
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Old 25-07-2021, 22:10   #2
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Re: Charging 48 Volt Batteries on 12v System

the dc to dc will be more efficent
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Old 26-07-2021, 20:11   #3
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Re: Charging 48 Volt Batteries on 12v System

DC to DC 2-way buck boost perhaps? Then you could also have the 48V as an emergency helper for your 12v
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