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The Norfolk Broads Forum / Broads Boat Owners Q & A / New Boat, New Charging Dilema
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Posted By Discussion Topic: New Boat, New Charging Dilema

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dannyb1
Jan-28-2010 @ 9:28 PM                           Permalink
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Hi All

I am buying a boat to be delivered later this year that has a 12volt and 24volt system on board, as well as 240 volt invertor and shorepower.

It doesn't however have a battery charger.  It has a 12volt domestic bank, 12volt engine battery, 24volt invertor bank and 24volt fridge and heater bank. What is the best type of battery charger for this or will I need to install 2? a 12volt and 24volt.  Or could I use a 24volt charger with a 4 bank capability and use a voltage dropper onto the 2 12volt banks?

many thanks
danny

Aramanda
Jan-28-2010 @ 9:43 PM                           Permalink
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Hi Danny
I use a charger made by ctek,it's worth looking on the web site as they have some good information about battery charging and which type of charger to use.
The charger I have can be left connected and it will analyse the battery and cut in and out as needed.
I also use one on my tractor.Never had batteries kept in such good condition.
Worth a look.


Ian

george
Jan-28-2010 @ 9:47 PM                           Permalink
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this mix up must have a reason. if the boat is second hand then perhaps one of the owners has changed say the fridge as it was cheap or laying around somewhere. something like this.
you will need a charger for each voltage. 24v is better than 12v but more expensive for equipment. i run 12v and when i can via a charger on 220v i still can use my 12v equipment, so i don´t have different voltages for everyday things. i would take time to sort things out and go for one system, but i think a charger for each is cheapest in the long run. then change when parts of one of the systems fail.


george

george
Jan-28-2010 @ 9:52 PM                           Permalink
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saying all that the reason could be of course that the 24v units take less amps to run than a 12v unit so the heater and the fridge being the largest consumers of battery power it would make sense. you will have two alternaters then i suppose.



george

dannyb1
Jan-28-2010 @ 10:03 PM                           Permalink
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Yes it has 2 alternators, its not been done to save money anywhere, thats how it was designed to be!

cheers
danny

george
Jan-28-2010 @ 10:47 PM                           Permalink
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i reckon thats the answer then, to get power to the hgher consumers on a low amp rate so the battery running time is longer. not a bad idea if done on purpose as you say. that would mean done professionally so ok. two chargers and away you go.
enjoy the boat and mind the bridges.

george


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