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Old 04-16-2015, 10:53 PM   #57
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Just a general comment about the battery charging. Most of the batteries have about an 80 Amp-Hr capacity. General charging recommendations are to charge at a rate not to exceed 10% of your battery Amp-Hr capacity. So, for an 80 Amp-Hr capacity you shouldn't exceed 8 Amps charging rate. So, if you've let your battery get 50% depleted, i.e. down 40 Amp-Hrs, it would take 5 hours at 8 amps to get it back fully charged. (You might notice on most generators that have a dedicated battery charging connection, it is normally rated about 8 amps.)
If you have two 80 amp-hr batteries in parallel, charging rate should be no more than 16 amps (so, even charging at 16 amps takes less than 200 watts of your generator).

I have a 2800 watt Yamaha inverter generator and the starting current for the air conditioner sometimes causes it to struggle a bit. If conditions are questionable, I will open my internal 115 volt breaker supplying the power center converter, then start the air conditioner, then reclose the breaker for the converter.
Even with the 2800 watt Yamaha I can't run both the air conditioner and the microwave at the same time.

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Old 04-17-2015, 05:03 AM   #58
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Need to buy new ac. Checked out a 9200 by coleman I think and it used way fewer amps, twelve or less. Anyone tried one of these? Would be marginal for my needs but appears it would run off a 2000 Honda. Peace jim

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Old 04-17-2015, 05:23 AM   #59
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The issue for a generator is not so much the running amps but the starting amps. Induction motors require 3-5x the starting current where x is the running current. A small generator is not going to handle that unless you have one of those fancy hybrid inverters that picks up the excess current on the battery.

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Old 04-17-2015, 06:51 AM   #60
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Originally Posted by MaineStreamer View Post
Thanks for that; if I understand the chart, Diesel is most efficient, at 113% of equivalent gallon of gas E10 regular, and propane is 73% efficient of a gallon gas. That would say, a diesel has best bang for buck since it is also cheaper now than gas also...dang! What to do....
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Old 04-17-2015, 06:54 AM   #61
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Originally Posted by lsbrodsky View Post
The decision is usually safety and convenience, not fuel cost.
That's what sold me on propane. I just need to hook into the barbecue grill port and I'm running my generator. No gas cans or gasoline smell.

Also, there is an estimated 33 hours of runtime in a single 30 lb propane bottle, which would take a lot of gasoline to match. propane spec sheet
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Old 04-17-2015, 07:07 AM   #62
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Originally Posted by MaineStreamer View Post
Does anyone know whether a 6-gallon gasoline tank as discussed above is still available from some motor vendor?
Most today are not metal... but they are sold (OMC ). There are quite a few metal ones on Ebay right now.

the gas caps can be found by searching the internet for
EXTENDED RUN FUEL GAS CAP FITS HONDA Eu2000i GENERATOR Amazon sells them for $32 each, but you need the OMC quick disconnects to make them useful.
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Old 04-17-2015, 07:20 AM   #63
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Thanks Dan and BASE729. In regard to long-run gasoline tanks, does anyone use a tank designed for an outboard motor boat? They are quite horizontal and designed not to tip.
Marty Womer
Saco, Maine
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Old 04-17-2015, 07:39 AM   #64
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A few months ago, during the decision making process, I read up on the simple conversion to provide the extended run fuel tank for the EU2000 Honda generator. It was my understanding, at the time, that this option was not available for the EU3000. Apparently the 2000 has an internal fuel pump and the 3000 does not. Despite this being an available option I opted for the Honda EU3000i, pull start. My question IS: is anyone aware of a way to convert the 3000 to extended use ????
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Old 04-17-2015, 06:35 PM   #65
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I built an extended-run kit from parts, and saved about half of the cost of buying the complete kit at retail. See photo at link, below:

Extended run tank with dual feed

Note: I also added Mercury Outboard quick disconnects.

However, after building the hose kit, we found that we rarely camp where both generators are needed. (Two Honda EU2000i generators connected in parallel are only required for the air conditioner). We figure that if we need the air conditioner, we are camped in the wrong place and need to find a campsite closer to the ocean, farther north, or at a higher altitude.

If an attraction (e.g., Disneyland) warrants "camping" where we need air conditioning, we just look for an RV resort with electric hookups.

When boondocking, we frequently use a single generator to recharge our batteries; and for refueling our Hondas in the field, we use these:
  • Atwood 6-Gallon Fuel Tank -- If this tank is used only for storage, the fuel fitting can be capped off using a 1/4 NPT plug. Since this portable tank is designed for banging around in the bottom of a boat, it is very sturdy; and it does not leak or emit gas fumes.

  • Scepter Flo-N-Go MaxFlo Siphon Pump

Regarding using an extended run tank with the Honda EU3000i, see details at this link:

Honda 3000 Extended Run Fuel Option
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Old 04-20-2015, 06:39 AM   #66
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Those who strap the gasoline tank onto the battery box - Do you put the tank inside your trailer when you leave the trailer at a campground or parked somewhere to go for a hike, bike ride, shopping trip to town, visit park facilities, etc.?
Marty Womer
Saco, Maine
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Old 04-20-2015, 10:01 AM   #67
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Question for those who have done the propane generator conversion on a smaller generator (Honda EU2000i, for example): If you need to run a pair of generators, what do you do? Have you converted both? Is there a way to hook both to one propane bottle? This is something I've always wondered about.

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Old 04-20-2015, 10:25 AM   #68
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Lots of great info given here; thank you folks.
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Old 04-21-2015, 12:11 AM   #69
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I was in Northern Tool today (April 21, 2015) and they have a new 2000 inverter, quiet-run generator on sale for $599 (free shipping) which comes equipped with a "companion" cord to attach to a second unit. It is a virtual copy of a Honda and it was said to be capable of using the extended-run fuel tank that Honda's use. They started it up (first-pull when cold) inside the store and it is very quiet indeed. I wish I could buy a pair with impunity from the family bookkeeper.

FREE SHIPPING — Powerhorse Inverter Generator — 2000 Surge Watts, 1600 Rated Watts, CARB-Compliant | Inverter Generators| Northern Tool + Equipment

I do have to wonder why we all want to get back to nature and go camping.... but need AC, microwaves, TV's, generators, fuel, etc, etc.

And I also felt it strange that a new participant might ask a question and someone hijack the thread repeatedly by complaining about the newcomer's question...without considering the newcomer might have already searched and found the answers unavailing... and also missing the point that an entirely NEW bit of information was provided to all, about a battery product that boosts small gen outputs... something that may have remained elusive were it not for the newcomer's question!
The fresh question is welcome, IMO.
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Old 04-21-2015, 01:50 AM   #70
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Originally Posted by DHart View Post
Lots of great info given here; thank you folks.

Hi, DHart; I have been on this forum for a little while and I can't even find my own threads using the SEARCH function. For me and a few others the SEARCH function just doesn't work.

Oh wait, we are talking about generators! My Yamaha 2400 runs my air conditioner just fine and has run it, my convertor, and my refrigerator at high altitudes. [people will tell you that a 2400 won't work] I would say no to the one Honda 2000, but I have an SOB friend who runs his 13,500 BTU air conditioner with one Honda 2000. He installed an easy start capacitor on his air conditioner and he says it works for him.


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