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Old 04-02-2008, 00:42   #1
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3 stage charger for ex honda 350

Hi has any body got an idea as to what size three stage charger i can get with killing this EX honda generater, oh yes it is 240 ac generater.
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Old 04-02-2008, 01:37   #2
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I assume you mean "without Killing"
I assume the Genny is 350W, or is that 3.5Kw?The 240V is the voltage.
If it were 350W, then that is rather small and you will power about a 15- 20A charger. If it is 3.5Kw, then you could happily run any charger that would run on single mains voltage.

Ummm....you have a 44' sloop on Lake Wanaka?
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Old 04-02-2008, 01:54   #3
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the Honda ex350 is indeed 350 Watt, which should power up to a 20A 14VDC Battery Charger.
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Old 04-02-2008, 02:05   #4
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That got you thinking at least some one is awake. We keep Kia Orana in whangarei at the moment and she is up on the hard.
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Old 04-02-2008, 02:17   #5
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EX350

I couldn't find the specifics of weather 350W was total (12VDC + 240VAC) output or just the 240 line. But assuming Honda has a marketing dept. like everyone elses I'd bet that was total power output.
From here it would seem there are 6 DC coils and 15 AC, it would be reasonable to assume that you could get a maximum of 250 W of power out of the AC line. That will end up below 17A of charge into the batterys.
It seems the 12VDC line is intentioned for charging batteries. I wonder if you coud utilise that seperatly, i.e. charge a single battery from that and the rest of the bank from the 3 state. I can see trouble trying to couple the outputs togeather, probibly best to leave them seperate or not use the DC at all.
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Old 04-02-2008, 11:24   #6
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DC in most Genny's I have seen are 8A 12V. Why is that by the way. It doesn't matter how big the Genset, they are always 8A.
Anyways, these Honda's will happily put out 350W, but that is also loading the thing to it's max. 25A is about the max, so 20A is a fudge factor and allow's for losses.

Mark, that's a long way between you and the boat. But I suppose hopping on a plane from Queenstown is not too far in reality.
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Old 04-02-2008, 12:48   #7
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generator's internal inverter

The nominal 12V output would need a "buck-boost" dc/dc converter with a "3-step" regulation control. Don't know of such a product.

The EX series consists of an internal alternator that feeds an internal ac inverter so that the engine can run at a speed variable according to load....the way of the present and future generators.

To most efficiently utilize such a genset find a "switch-mode" 3-step charger with harmonic correction (sometimes called "PFC") rated at the generator intermittent (continuous if you have continuous dc loads, otherwise for battery charging the intermittent rating will help you maximize current charging) output power rating.
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Old 04-02-2008, 14:15   #8
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Quote:
Originally Posted by Rick View Post
To most efficiently utilize such a genset find a "switch-mode" 3-step charger with harmonic correction (sometimes called "PFC")
"Power Factor Corrected"
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Old 20-04-2013, 20:47   #9
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Re: 3 stage charger for ex honda 350

This is an old thread, but I just bought one of these generators. Would like to power the max size charger to charge gel bats. I think that would be 15 amps, but was maybe going to try the xantrex 20 as the gel output is less volts and therefore less AC amps required.

Of course the bigger chargers can be detuned, to output a lesser amount. I'd rather stick with something simple.
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