Portable Power Generator

**KzScrapper** · 12-08-2011, 06:24 AM

M88...I think the battery isolator is in charge of making sure your battery still has some juice left.

**jackson26** · 12-28-2011, 02:21 AM

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**gustavus** · 12-28-2011, 10:49 PM

Originally Posted by IdahoScrapper

Which part? Draining the battery? Wire in a 2nd battery and put an isolator in. Refer to link I just posted.

Isolation Switch. protects main battery from draining. If you tow an RV your truck maybe already equipped. The wiring schematic will vary from the one below to keep the trailer battery isolated from main.

To get a picture in your minds eye, replace inverter with trailer battery which is only present when the trailer is hitched and plugged into the trucks brake and marker lights which also has a charging circuit which includes and isolation relay.

2nd battery does not have to be mounted under the hood, I used this same circuit to keep my winch battery fully charged on my car hauling trailer. The battery is located on the tongue near the winch.

**ozzy214** · 12-28-2011, 11:12 PM

You want to go real cheappppp? Get yaself a lawn mower. Rig any old car alternator using a belt to run off the pulley. The old big gm were easy to wire up. One wire to hot to energize it and charging. Now hook any battery and a invertor.

Now you got yaself essentially free genny that can do anything from jump a car on 12v to power your tools. Only cost is the inverter. 1000 watts for like a 100 or less will power most any tools except plasma cutter.

Great thing is a 5 hp mower is perfect and wont cost you more than a gallon or 2 of gas in a 8 hr period running continuously.

I figured this out when I was like 10 years old. Watched the mobile diesel mech come up to get dads truck going. He was otr and hurt bad for a few weeks.n Truck was parked at house and batteries froze. Anyone knows a diesel requires a huge amount amps to start.

Well the mech had a old power washer with the pump removed. Pulley bolted on and alt attached via 1/4 angle iron. Then he ran jumper cables straight from the charging pole of the alt to the truck. Then he had to hook his van up as well to get the truck enough amps to run.

Trust me works and essentially free if your a true scrapper and save any good stuff.

**gustavus** · 03-16-2012, 11:12 AM

Originally Posted by Kris Kringle

I use a 5000 Watt power Inverter it cost around $600

Yea I just purchased a similar inverter 2500 / 5000 watt max, wondering of I did the right thing by ordering the Pure Sine Wave Inverter over Modified Sine- thoughts anyone.

The manufacture claims using the pure sine inverter your tools will run cooler extending operating time. Is this BS or does their claim have any truth to it.

**gustavus** · 03-28-2012, 05:55 PM

Originally Posted by biscuit

Yea I just purchased a similar inverter 2500 / 5000 watt max, wondering of I did the right thing by ordering the Pure Sine Wave Inverter over Modified Sine- thoughts anyone.

The manufacture claims using the pure sine inverter your tools will run cooler extending operating time. Is this BS or does their claim have any truth to it.

Pure sine inverter right or wrong arrived this afternoon.

**Otto** · 03-28-2012, 09:07 PM

Originally Posted by biscuit

Yea I just purchased a similar inverter 2500 / 5000 watt max, wondering of I did the right thing by ordering the Pure Sine Wave Inverter over Modified Sine- thoughts anyone.

The manufacture claims using the pure sine inverter your tools will run cooler extending operating time. Is this BS or does their claim have any truth to it.

Line or generator power is actually fairly distorted or dirty when compared to the Pure Sine Wave Inverter output. This distortion is made up of high frequency waveforms which could affect the efficiency of motors. Now, I would want to see some test results to see if the decreased efficiency would be noticeable. More significant and like Kris Kringle says, you can run anything with a Pure Sine Wave Inverter - you can't run everything off a Modified Sine Wave Inverter though. A SCR type dimmer or speed control, for example, will not work properly with the sharp polarity changes of a Modified Sine Wave Inverter. So I would say you made the better choice.

**danielms** · 03-28-2012, 09:18 PM

http://www.harborfreight.com/800-rat...:referralID=NA
how about one of these from harbor freight. super cheap. super portable. been thinking about one for my boat and a cheap charger incase the batteries die while i am tied to the rig fishing as i ruan a couple of lights and a radio.

**gustavus** · 03-28-2012, 11:30 PM

Originally Posted by Otto

Line or generator power is actually fairly distorted or dirty when compared to the Pure Sine Wave Inverter output. This distortion is made up of high frequency waveforms which could affect the efficiency of motors. Now, I would want to see some test results to see if the decreased efficiency would be noticeable. More significant and like Kris Kringle says, you can run anything with a Pure Sine Wave Inverter - you can't run everything off a Modified Sine Wave Inverter though. A SCR type dimmer or speed control, for example, will not work properly with the sharp polarity changes of a Modified Sine Wave Inverter. So I would say you made the better choice.

Yes I feel that I made the right choice, research told me that modified sine would not operate tools with digital speed controllers amoung many other digital devices.

The inverter is much larger than I actually needed none of my electrical tools draws more than 12 amps but I figure having that extra aperage in reserve wont hurt the inverter.

Scrapped off the decal from the top plate to make it less desirable to a theif, no Pawn shop would want to buy it now.

I'm going to install 2 more battery's in the crane truck with a battery isolator.

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