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Old 10-13-2014, 10:39 AM   #29
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Originally Posted by KJRitchie View Post
Anyone use the DC output on EU2000i (non Companion)?

I notice the Companion EU2000i is $100 more.

Kelvin
I've never used the DC output. Can't think what it would be useful for, except possibly for providing a quick boost when a battery charger is unavailable.
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Old 10-13-2014, 05:46 PM   #30
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I've never used the DC output. Can't think what it would be useful for, except possibly for providing a quick boost when a battery charger is unavailable.
I suppose the DC output might be useful if you had a 12v device you wanted to power off the generator for awhile.

TinTin, I'm not even sure that it would provide sufficient output to boost a car battery, that takes a lot of amperage.
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Old 10-13-2014, 06:20 PM   #31
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I suppose the DC output might be useful if you had a 12v device you wanted to power off the generator for awhile.

TinTin, I'm not even sure that it would provide sufficient output to boost a car battery, that takes a lot of amperage.
Correct AAB. Specs say that the outlet puts out 12V 8 Amps, adequate for charging vehicle battery, certainly not boost.

Another possible usage might be for running a 12 volt compressor.
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Old 10-14-2014, 08:14 AM   #32
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12VDC output from a generator is insufficient to charge a battery, as most need 14.2-14.6 VDC for bulk/absorption charging. Also, a constant voltage will do no favors for your batteries....... think Parallax converters. It would be fine to run 12VDC appliances though.


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Old 10-14-2014, 09:37 AM   #33
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12VDC output from a generator is insufficient to charge a battery, as most need 14.2-14.6 VDC for bulk/absorption charging.
Lew, according to Honda the 12 volt output can be used for charging automotive batteries. Honda EU2000i Model Info | Super Quiet 2000 Watt Inverter Generator | Honda Generators

I would guess that this would be used in a situation where better alternatives are not available. No doubt much less efficient than using a proper converter/charger.
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Old 10-14-2014, 07:52 PM   #34
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Lew, according to Honda the 12 volt output can be used for charging automotive batteries. Honda EU2000i Model Info | Super Quiet 2000 Watt Inverter Generator | Honda Generators

I would guess that this would be used in a situation where better alternatives are not available. No doubt much less efficient than using a proper converter/charger.
Yep,

I looked at the link. No specifications as to exactly what the voltage output is other than 'unregulated 12 volt at 8.0 amps'. since the term '12 volt' is used generically now, what exactly is the voltage output when measured with a DC volt meter? a battery measuring exactly 12.0VDC is 60% discharged!

I'm not looking to split hairs here, just trying to clarify terms and make sure that you don't ruin your batteries by charging them the wrong way. It's far better to plug in your trailer and let your (hopefully) 3-stage charging converter do the job.

Anyone out there with a Honda 2000 know the actual measurement of the '12 VDC' output?
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Old 10-14-2014, 08:07 PM   #35
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Just checked mine. Right around 16 volts in eco mode.
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Old 10-14-2014, 08:48 PM   #36
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WOW! That's high enough to boil the liquid right out of your batteries from extreme out gassing! Typical voltages for equalizing sulfated liquid lead acid batteries is 15.3-15.5 VDC.

If you connected an AGM to that much voltage, you would kill it in no time.

As I said before, use the 120VAC output onto your trailer and the converter, or bring a battery charger with you.

The only use I can see for that voltage is a quick boost for dead starting battery to turn the engine over. But it might damage the electronics in the vehicle!


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Old 10-14-2014, 08:59 PM   #37
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Thanks Lew.

Of academic interest only. The question was asked whether it could be used to boost or charge the TV.

No worries, no one was planning to attach the Honda DC leads to their trailer batteries.
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Old 10-15-2014, 12:30 PM   #38
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At that voltage, I would forget that it was there and not use it at all.


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Old 10-15-2014, 12:42 PM   #39
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I would expect the 16 volt reading is when there is no load on the 12 volt circuit. It would probably be lower when a load (battery) is being charged.
I also suspect that there is no intelligence, like a converter. So one would have to keep an eye on the battery.


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Old 10-15-2014, 12:50 PM   #40
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I bought one Yamaha 2000 with the thought I would add a second unit for the AC if I needed it. Three years, 18500 miles, and 228 Airstream nights later we've never been in a situation where we couldn't be comfortable without the air conditioner so we still have only one generator. In fact we use the generator infrequently as the coach batteries will carry us for 2-3 days without recharging unless we are using the furnace.

We put LED lights in the trailer which draw little power. We don't watch television when boon docking. Propane fuels the refrigerator and water heater. The water pump and fantastic fans don't draw much power.

I suggest to newbies they spend some time camping in the trailer before deciding if they need a generator at all or what kind of generator to buy. It really depends on your usage. If it wasn't for the occasional need to run a coffee maker and hair dryer on 110v alternating current, we probably wouldn't use the generator at all.
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Old 10-15-2014, 12:56 PM   #41
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Useful Honda generator numbers. Note at the first three are 120Vac models with a 30 amp locking receptacle.

3000iS 134 pounds rated 2,800 watts continous

3000i 78 pounds rated 2,600 watts continous

2000i + 2000i Companion 45.9 pounds each 3,200 watts continuous when linked 1,600 watts each alone

Due to pinched nerves in my neck, I am allowed to lift the Honda 2000 models (one at a time), but not the other two heavier models.

The Honda 7000iS is rated 5,500 watts continuous and has a 30 Amp 240Vac twist lock receptacle. The 262 pounds is out of my lifting capacity.
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Old 10-15-2014, 01:57 PM   #42
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I made a small lift crane to lift my 7000is

Got the idea from another forum member

Used a half ton "small" harbor freight truck crane - used a couple hitch extenders then had a plate welded to a blank hitch and that is what I attach the crane base to and the 7000 lifts as such

I use a piece of 4x4 as a stuff leg for good measure

It doubles nicely for home backup

I still am perfecting the crane but I've used it now a few times and it works

Of course all the parts of the crane and hitch stuff ain't "light" but not bad for me

It's easy to see why the dual honda 2000 route is so popular though - I am loving the 7000 - I'll be making a post outlining my experience with it so far as it relates


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