Question about Black & Decker Husky 750w Power Inverter

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Is this inverter powerful enough?

I have a Husky 750W inverter. Just bought a Kenmore 5CuFt upright freezer. Label says 1.1 amp. Called Kenmore ref amp required to run this unit, could get no answer, they did not know.
Inverter was connected to deep cycle battery showing 12.5 volts of charge. When freezer was connected to the inverter, inverter output was 107 to 108 volts. I do not think this is enough to operate this appliance. Can you help me with this problem. Thank you, Terry Black

Posted by crappiefishe on

  • RJ Systems (Retired) Dec 21, 2013

    Just a little more FYI concerning voltage and amperage. Always check battery voltage with its load attached. A battery can read 12 plus volts when disconnected and drop to 5, 6 or ? when connected to a load. Also, a 1000 watt power supply should be able to deliver 8.33 amps at 120 volts. A 750 watt supply should handle a load of 6.25 amps. 1.1 amps for a 5 cubic foot freezer does not sound right. Both a compressor or a HOT / COLD wiring junction will draw more current than that. Re-check the specs. on your freezer nameplate. Your looking for the "Full Load Amps", or "FLA". It may also be stated as "Regular Load Amps", or "RLA". Hope this helps



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Buy a new one more than 200 watts and always check the fuse

Posted on May 08, 2012


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You are right. This is not enough to operate this freezer. You are going to need a bigger invertor it get it to work properly 900 or 1000 watt should be efficient even though it is not the best way to run the unit. If the unit has a problem you would be replacing the inverter all the time. Just FYI

Posted on Feb 20, 2009


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What's your problem?how many amps on a 1/2 horse sump pump

750 watts is pretty close to one HP. However, the pump will have a much higher current draw on start up which may be too high for the inverter. (The accurate number is 745.699872 Watts per Horsepower)

Discounting any losses, 750 watts from a 120 volt supply will draw 6.25 Amps. so 1/2 horsepower should draw 3.125 while running. Startup current may be much more. Check your pump for its current draw (should be printed on the pump) and check it against the inverter's limits. It may be that the inverter is too light for the pump.

Apr 28, 2012 | Black & Decker Husky 750w Power Inverter

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Will a 750 inverter run a sump pump off of a deep cycle marine battery for a short period of time?

Looking at this, how many amps does the pump normally draw? Take this and multiply by 3 for start up current draw. Now, multiply that by 120 (volts) and this will give you the watts. Start up current is what will knock your inverter down. It won't kill the inverter but it will overload it on startup and turn off the unit. Since I do not know the size of your pump, this is my caution. You could always try it, the most that should happen is that the inverter will shut down.

Feb 05, 2011 | Black & Decker Husky 750w Power Inverter

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How to adjust low voltage cut off to lower setting about 9.0 volts

What is the normal low voltage cutoff?It converts AC to DC correct?Just comment and I will get an auto email that you did so and will reply ASAP.Greg

Aug 12, 2010 | Black & Decker Husky 750w Power Inverter

1 Answer

Does the unit have a fuse. I think i shorted it

Yes, I took this unit apart there are 3 40 amp fuses in the unit. (Similar to blade type car fuses). You have to completely unscrew everything plus take off the top lable and plate to access the other hidden screws

Oct 16, 2009 | Black & Decker Husky 750w Power Inverter

1 Answer

Appropriate size inverter for sump pumps need to find the amperage on the pump...your inverter is rated for 6.25 Amps...(750/120) will need an inverter bigger then the pump..I would suggest at least 1.5 times the size of the pump..bear in mind,..the inverter wasnt designed to start oversizing is needed..

Hope this helps

May 05, 2009 | Black & Decker Husky 750w Power Inverter

1 Answer

Power hook up

This type of inverter has large alligator clips on it because the amperage that comes through a cigarette lighter is insufficient and can result in blown fuses and overheating of the socket. Hook this one up directly to the battery without splicing a longer wire to it.

Apr 22, 2009 | Black & Decker Husky 750w Power Inverter

1 Answer

Where is the fuse(s)? What is correct replacement amperage?

Look for 3 - 40 amp fuses side by side near the fans, inside the unit

Jan 12, 2009 | Black & Decker Husky 750w Power Inverter

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