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Unread 10-04-2010, 07:36 AM   #46
Apollo21
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Quote:
Originally Posted by bradbb2005 View Post
This, If you charge it off the alternator, you must put a way to stop the current flow from the alternator to the inverter battery when you have alot of load on the inverter (1500 Watts +) or else you will fry it.
dual battery setup? in series or parallel? it would take some massive wire to keep it in the spare tire carrier though.

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Unread 10-04-2010, 08:49 AM   #47
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Well you will want to put the batteries in Parallel to maintain 12V, but either way you can put as many batteries to get the AH (ampere hours) up as you want, but it all depends on the run time to determine when he will start eating his alternator.

If it were me, I would find a way to limit the current flow to those batteries from the Alternator, probably down to about 50A that way if the batteries die the system can only draw 50A max. His stuff wont work, but its better than a dead alternator.

TBH you would be better off finding a small generator, I would love that big of an inverter but I think even my 1000W is pushing the lmits IMO.

Oh and just to maintain constant 2500W you would be looking at Minimum of 4/0 wire, Which is massive, 1/2" Diameter.
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Unread 10-04-2010, 08:55 AM   #48
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so let me get this right, a switched inverter wont drain, how large can i go without killing my alt?
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Unread 10-04-2010, 09:10 AM   #49
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My switched inverter does not drain when off, and has low voltage cutout. Really, I wouldn't go over 1200W (100A), your jeep has 136A Alternator on it (4.7V8) so 36A is not much to play with, when I hook up an 800W worklight to my inverter it dims all the lights down a little and I can hear the motor working to run the alternator.
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Unread 10-04-2010, 02:22 PM   #50
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Nice work!! I'm the guy with the inverter install pic that myjeeplovesmud posted. Nice to see how that stuff's getting taken to the next level!

If I ever get around to dual batteries, I think I'm going to go for a freaking huge power inverter.
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Unread 10-13-2010, 06:26 PM   #51
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Here's my kill switch for the inverter installed its sorta hidden down by my right leg. Not even close to getting hit when driving. Also ran a cell charger and a laptop charger for 5 hrs straight on the inverter with not problems.

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Unread 04-17-2011, 11:48 PM   #52
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awesome job dude.
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Unread 04-18-2011, 05:18 AM   #53
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Thanks man
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Unread 04-18-2011, 12:32 PM   #54
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There are more than a few problems with a 2500W/3500W inverter. First of all, even 2500W is more than one regular AC outlet (1875W according to some hair dryers). That's a lot of power. Second, drawing 200+ A from a car is going to dim the headlights (in addition to burning out your alternator). You might be able to mitigate the alternator problems by changing the charge circuit (putting in a current limiter or something --- there's lots of new funky DC power gear around these days).

But what-the-heck kind of fridge are you thinking? I can't imagine a fridge that draws down more than a 1500W inverter would do.

That-All-Said, why not a 12V fridge (the peltier-based ones). Sometimes they're sold as power-coolers, but there are many different shapes and sizes. I often run my long trips with a power cooler (bring meat and cheese and milk, etc). Most 12V fridge models run about 10A and do a great job. At 10A, you can safely leave them running 4 or 5 hours on a car battery.
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Unread 07-17-2011, 12:51 PM   #55
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ARB has a cool 12v fridge too. A buddy of mine has one. works great!
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Unread 07-17-2011, 01:46 PM   #56
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I have been thinking about hooking up an inverter. Have not worked it all out yet but I plan on hooking up a battery isolator and a second battery. Then hooking up the inverter to the second battery.
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Unread 06-07-2013, 02:00 PM   #57
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I just plugged mine into the rear power outlet, problem solved.
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