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Old 09-21-2016, 03:08 PM   #1
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1000 watt Inverter and coffeemaker

I have a Xantrex XM 1000 (watt) inverter that came with the 2016 Greyhawk. I have tried using a 800 watt coffeemaker that uses Keurig K-cups. When I turn on the coffeemaker, the inverter turns off for a few seconds and then resets. I have two Trojan 105 golf cart batteries that power the inverter. Has anyone had any success using the 1000 watt Xantrex to run a small wattage (800 watts) coffeemaker?
I think the answer is to get a larger inverter -1800 watts at least. Xantrex makes one that will be an easy replacement. The new inverter remote will fit exactly where the original one is in the control center. All the wiring would be the same if the DC wires from the batteries are heavy enough. Any suggestions?
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Old 09-21-2016, 04:00 PM   #2
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Are they 2 6 volt batteries 105Ah or 2 12v 105Ah batteries? Even though the coffee maker is 800watt it probable pulls more than your 1000w inverter can handle or you don't have juice in the batteries to handle the load. If you have a Watt-o-meter you can tell what the coffee maker peaks at. You can get one for less than $20.
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Old 09-21-2016, 04:06 PM   #3
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I have a Xantrex XM 1000 (watt) inverter that came with the 2016 Greyhawk. I have tried using a 800 watt coffeemaker that uses Keurig K-cups. When I turn on the coffeemaker, the inverter turns off for a few seconds and then resets. I have two Trojan 105 golf cart batteries that power the inverter. Has anyone had any success using the 1000 watt Xantrex to run a small wattage (800 watts) coffeemaker?
I think the answer is to get a larger inverter -1800 watts at least. Xantrex makes one that will be an easy replacement. The new inverter remote will fit exactly where the original one is in the control center. All the wiring would be the same if the DC wires from the batteries are heavy enough. Any suggestions?
You should verify that the issue is not excessive voltage drop to the inverter. If the inverter is far away from the batteries and/or the wires are too small, I could see that being a problem when you are drawing that much current. For example, to run the coffee maker, your inverter is going to draw roughly 70amps from your batteries.
So, check wiring (as well as tighten connections).
Measure the DC voltage to the converter as you load it down to see how much it drops.
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Old 09-21-2016, 04:48 PM   #4
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x2 on DanNJanice's advice.

A coffee maker is a straight resistive load and your inverter is rated for 1000W continuous so that part shouldn't be the problem. I checked quick and it cuts out on low voltage at 10.5V DC input - I would start as suggested on checking voltage drop at the input of the inverter.
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Old 09-21-2016, 05:04 PM   #5
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You might invest in a stove top coffee maker?

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Old 09-21-2016, 05:26 PM   #6
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In my work van I also was looking into what it would take to make a cup of Kuerig coffee. I don't know the rated wattage of my Kuerig but it peaked at 1200-1300 watts for about 2 seconds and then leveled off to the 750-800 watt range. I also looked into a Xantrax inverter and even though the surge rating on the 1000 watt inverter covered this, Xantrex tech help said surge ratings are milliseconds not seconds. They said it may work but to expect a short inverter life. I suspect your issue is more voltage drop like the others have said which is why I was asking about your battery bank but I wouldn't rule out the surge either. I quickly realized the cost of a mobile Kuerig coffee cup was more than I was wanting to spend at the time.
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Old 09-22-2016, 12:42 PM   #7
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Response from OP

The Trojan batteries are new and are 6 volt golf cart batteries. they were fully charged when i attempted to use the coffeemaker. I will check the wires from the batteries to the inverter. The length of the wires "should" be ok if Jayco did the installation correctly. I would think Jayco used wires less than 5 feet long. Thanks for the responses!
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Old 09-22-2016, 12:45 PM   #8
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Have any Greyhawk owners with the Xantrex XM1000 inverter had any experience trying to us a coffeemaker with this inverter?
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Old 09-22-2016, 12:46 PM   #9
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The length of the wires "should" be ok if Jayco did the installation correctly. I would think Jayco used wires less than 5 feet long. Thanks for the responses!
But isn't the inverter only setup to run the TV. Greyhawks used to come with a 400 watt, but that is no longer made, thus the switch to 1,000.

Wire may be sized accordingly. Just sayin'.
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Old 09-22-2016, 12:49 PM   #10
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I'm with Murff.


Heating water with battery power is a mis-application of resources!
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Old 09-22-2016, 12:55 PM   #11
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Is your refrigerator or anything else running off the inverter at the same time?

My guess is voltage drop as well. Check the gauge of the wires as well as the length and you should be able to calculate the theoretical voltage drop.

Voltage Drop Calculator

Anyone know if the T-105 can handle 70+ amps without dropping voltage too much? The technical specs do have a 75amp rating but I suspect voltage drops a fair bit and then additional voltage losses from the wiring.

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Old 09-22-2016, 12:57 PM   #12
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I'm with Murff.


Heating water with battery power is a mis-application of resources!
I guess running our crock pot off the solar panels is a no no too then.
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Old 09-22-2016, 01:13 PM   #13
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I guess running our crock pot off the solar panels is a no no too then.
If you've got enough solar panels (and sunshine) to replenish 400W for 3-4 hours, then go for it!

Not us. Too many trees. Lovely trees. Shady spaces to relax and listen to the water.

For me, because I am still not used to so many 'little draws', I want to preserve as many Ah as possible. I much prefer to lean on the up to 60# of propane sitting right next to the battery.


On topic: I had installed a 1,500W inverter in my previous trailer. 2' of #6 wire to feed it. You could microwave a cup of coffee from room temp to drinkable or 2 hot dogs from fridge to sizzling. Then the water pump wouldn't work properly.


No inverter in the new trailer.
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Old 09-22-2016, 02:56 PM   #14
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Is your refrigerator or anything else running off the inverter at the same time?
On our Greyhawk, the inverter only powers the TV outlet. My own thought is that the 800 watt rating is nominal. And there's a surge.
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Old 09-22-2016, 05:11 PM   #15
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- What is your battery(s) voltage before you turn on your coffee pot? Should be 12.6 or better. The closer to 12.0VDC your battery is the less effort it takes to hit the 10.5VDC cutoff voltage of your inverter.

- How old are your batteries? They may hold a charge, but your original 220Ah battery rating may only be 120Ah now.

- Is the water level topped off in the batteries?

- How many feet from your battery is your inverter? Recommended is around 5' max.

- What size battery cables connect your batteries DIRECTLY to your inverters (+) & (-) connections. (Frame ground should not be used for an inverters ground)

- Are all your inverter and battery connectors clean and tight?
- Are your cable ends (connectors) tight? Not corroded!



I would venture to say that you either have too much distance between your inverter and your battery or your cables are not large enough for the task.

I have 2 Trojan T145 batteries (6volt, 260Ah), the 1/0AWG cables between the inverter and batteries are 5' and it has never tripped the inverter's low voltage disconnect. I would test the voltage drop now but, they are still at 13.1 VDC and it would not show a normal voltage drop... Got to love SOLAR

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Old 10-24-2016, 09:39 PM   #16
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Im fairly certain the coffee maker isn't running off of the inverter. We have a 2015 greyhawk and I believe the inverter is only for the TV, so if the inverter is tripping, there may be something else wrong. Good Luck
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Old 10-25-2016, 10:28 PM   #17
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I also have a 2016 29MV. How did you install 2 golf cart batteries? The battery tray surely won't accommodate them.
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Old 10-26-2016, 06:02 AM   #18
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I have a 2k PSW Inverter with 2 x Interstate 6V GC batteries. AH ratings are similar to the T-105's. I once tried to run my coffee maker prior to AM generator hours and while it did it, the batteries were hit hard. I got about half the pot going and decided it was better to forego and use the press instead.

So, to answer your question. Yes a 2k inverter can run a coffee pot, but I would not do it regularly or even that often. There are better more efficient options out there for certain applications.

My main use of the inverter is for TV's an occasional blender run and charging our electronics, like phones.

2/0 wire is what I used on a 24 inch run.
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Old 10-26-2016, 03:09 PM   #19
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I have a 1000 watt inverter that I use in emergencies. (once in 8 years so far) With 1 ga wire it will run my K-pod coffee maker..
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