Trouble with my power inverter!

Hey guys!
I need your help!
I have 1 100W and 1 150W solar pannel.
My 2000w BESTEK power inverter keeps shutting down after a couple of seconds just with my cell phone plugged.
I don’t know what the problem is, i have way enough juice, it just shuts down.
I used to have a 1000W inverter but the fuses always busted out.
This one, I checked all the fuses are good.
Someone guide me please.
Theses are some pics of my set up.

Thanks,

Jeff

Greetings!

What do you have the inverter hooked up to, the battery or the charge controller?

Cheers!


"Old school, cheap, simple, reliable, and easily replaceable for the win!" ~ Traveler@Heart


Several things can cause it.

Like Van Dweller says, don’t connect an inverter to a solar charge controller.

Battery voltage may be too low (inverters shut themselves down at low voltage)

Wire gauge may be too small or too long, both of which lower voltage, maybe to the point that the inverter will shut itself down.

And why are you charging phones through an inverter? That’s super inefficient - get a car charger/adapter.

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No the power inverter is straight from the battery! Which i have two boat deep cycle one

Here is a pic of the wire. It’s a lil less than 2 feet long I’d say

I don’t think the voltage is too low it’s fully charged 99% of the time

Check the voltage where the wires enter the inverter while the inverter is powering something. Anywhere else is meaningless.

If the voltage is good there, then the inverter may be defective or there may be a bad/corroded/loose connection somewhere.

That wire looks too small for a 2000 watt inverter. Should be 1-gauge, or even larger. You may not be plugging anything in that draws 2000 watts, but its foolish to power an inverter that size with anything smaller in case you, or someone else, does.

2000 watts / 12 volts = 167 amps. 167 amps requires a minimum of 1 gauge wire or larger (wire length less than 10 ft).

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That voltage should be fine, but those wires are undersized for that inverter. It should be more than adequate to just charge a phone though.

Does the inverter shut off with nothing plugged in? Can you plug in something else like a laptop or a lamp without it shutting off?

As others said, you would be better off with a DC charger instead.

I’ve never seen as situation where using the load output on a solar controller was a good idea. I recommend attaching everything to a busbar that’s connected to the battery. All your loads, solar charger, inverter, etc.

Lastly, Bestek aren’t great. I had a 1000w one that wouldn’t stay on powering a fridge that only drew 55W. There’s a chance your inverter is just no good. It’s either that, a faulty phone charger, or loose wiring.

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Firebat, using the load terminals on a controller IS a good idea for almost anything except an inverter. Reason being, it will shut everything down before battery voltage gets to the point where the battery gets over-discharged, thereby avoiding battery damage. Not using the load terminals (or some other form of low voltage disconnect) might cost the house battery(s), and the price of buying new batteries.

I prefer to have my LVD seperate from the solar controller. You need one for the inverter, anyways, so might as well use that one for everything.

I could see some logic behind using the load terminals to control a contactor or relay that disconnects everything (inverter included) from the battery.

Don’t connect an inverter to a charge controller - could fry the charge controller. Inverters have their own low voltage cutoff so it’s not needed for the inverter.

Everything else should be connected to the load terminals on the controller, or through a separate low voltage cutoff.

Greetings!

That depends on the controller, it isn’t universal. I’ve seen some that no solar meant no juice to the load terminals.

Cheers!


"Old school, cheap, simple, reliable, and easily replaceable for the win!" ~ Traveler@Heart


Greetings!

I agree that low voltage disconnects are best right at the battery(s).

Cheers!


"Old school, cheap, simple, reliable, and easily replaceable for the win!" ~ Traveler@Heart


I’ve never seen a controller that wouldn’t supply power from the battery without the panel supplying power - that would be stupid, and all the more reason to only use known quality components that don’t do stupid things like that.

Greetings!

I don’t know about stupid, it seems like many people only want to run certain things when it won’t affect their battery(s).

Cheers!


"Old school, cheap, simple, reliable, and easily replaceable for the win!" ~ Traveler@Heart