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Old 27-08-2008, 10:11   #1
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Battery Charging time

I am looking to do some cruising. I am interested in how you guys have your batteries setup and charging means. And also the time it takes to charge your batteries without using your engine.

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Old 27-08-2008, 20:30   #2
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Hank...without the engine? Do you mean via a plug at the dock? Or via a generator on board? Or via solar panels? Or via a wind vane?
A lot depends on size of battery bank, daily usage, type of batteries used (wet/agm/gel).
Lots of good articles and threads here on battery design, types and charging if you use the search function.


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Old 04-12-2008, 20:39   #3
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Battery charging

I envy you Hank because you have so much to learn.
Start with Google and
  • Marine batteries
  • Alternator
  • Generator
  • Battery charger
  • Photovoltaic cell
  • Wind generator
as the search words.

The time it would take to charge your battery depends on how big it is how discharged your battery is when you start and what you use to charge it.

Let us start with a naive example in order to give you an idea.

Let us assume a 100 AH battery and a charging current of 5 Amps. This will take 20 hours as a first approximation if we start with a completely discharged battery and we can persuade our charger to deliver 5 Amps no matter what.


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Old 04-12-2008, 20:47   #4
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Hank, do some reading New Boatbuilders Home Page - Basic Electricity DC Page 3 - Batteries
You need to figure out how you are going to charge the batteries. If no engine, then what, solar, wind, dock power, genset? You have to get the electrons from somewhere. Charging time depends on the size of the batteries, how big your battery bank is, and how many charging amps you can generate.
"Dont tell me I can't, tell me how I can"
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