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Old 01-14-2014, 08:58 AM
Tom69 Tom69 is offline
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Default Best 600- 1000 Watt power inverter?

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Im looking for a dependable source of power to charge my cordless power tools, etc in my BOV.

Anyone have one they like?
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Old 01-14-2014, 09:03 AM
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I recently bought this one, great reviews from amazon...picking it up today...

Amazon (Thumbnails) cover
Amazon (Thumbnails)
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Old 01-14-2014, 11:55 AM
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Default they are all pretty much the same

Except for the pure sinewave models which you probably do not need. To charge power tools, a 400 watt would be enough, but to run a microwave oven, a 1500 watt would be needed.

Now, small inverters (100 watt) can be plugged into cigarette lighter, but larger ones 400 watt plus need to be directly wired to battery with large gauge wire. I use welding cable to connect my 1200 watt inverter directly to a deep cycle battery.

Here's the math: P=IE watts = amps X volts. Amps = watts / volts so, 1200 watts divided by 12 volts DC equals 100 amps coming from your battery. That requires some big ass wire. Shorter the better too.
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Old 01-15-2014, 10:44 AM
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Darthmuerte Darthmuerte is offline
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I use the Cobra 400 watt to keep my drills, Sawzall, and cordless impact batteries charged. It provides more than enough power to charge all 4 batteries at the same time.
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Old 01-16-2014, 03:58 PM
gggplaya gggplaya is offline
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Originally Posted by Lagnar View Post

Except for the pure sinewave models which you probably do not need.
Some believe or do no recommend using a MSW inverter for charging batteries, and it all boils down to how the charging circuit within the base is designed. If putting a MSW into the base will cause the DC output to PWM or not, which could lead to dead batteries. Puresine when you can.

But ultimately, i'd recommend direct DC charging bases. Dewalt makes a 12v charging base that'll plug directly into a battery. This would be the most efficient method instead of converting 12v DC into 120vAC with a 10% loss, then have the base convert 120vac into 18-22v DC at some loss. Boosting from 12v to 18v isn't going to be anywhere near as inefficent as boosting from 12v to 120v and then back down to 18v. Those are huge steps and why more inverters needs cooling fans.

I use this one from RYOBI:
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Old 07-18-2017, 06:54 AM
DavidDh DavidDh is offline
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I will go with Cobra or Potek, these are the top brands for high efficiency inverters at best prices. Main things about these inverters are; they are fully protected, they come with full protection to safeguard the connected devices.
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Old 08-26-2017, 07:50 PM
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Ask these guys...and explain what your usage is:
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Old 11-11-2019, 12:24 PM
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I have an eliminator (motormaster el cheapo)1000 pure sine and its worked great for the couple years I have had it
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Old 11-11-2019, 01:03 PM
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Wish has a 5000 watt modified sine wave for like 60 bucks.
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