Why my system will not run my fridge?

[559sanchez93705]

I have a Midnite solar classic 150 charge controller with 5@100 watts Renogy solar panels and a Xantrex Prowatt 2000 SW inverter with SOK 12v @ 206amp Lithium-ion batteries but it will not run my Refrigerator by Frigidaire specs are AMPS 6.0 VOLTS 115 HERTZ 60, what do I need to do to make it run?

 

[Stepandwolf]

Is that the peak current draw on the fridge? Just like an AC, the fridge could have a compressor with a high startup draw that might be exceeding your inverter's ability. I am assuming the batteries are fully charged?

 

[559sanchez93705]

Is that the peak current draw on the fridge? Just like an AC, the fridge could have a compressor with a high startup draw that might be exceeding your inverter's ability. I am assuming the batteries are fully charged?

BATTERY IS AT 12.9V drop to 12.7 and it turns off my inverter

 

[iamrich]

When you say it will not run your fridge, do you mean it will not power it at all, or it will not power it for very long?

 

[559sanchez93705]

When you say it will not run your fridge, do you mean it will not power it at all, or it will not power it for very long?

it starts up the fridge and my battery is @12.9v then drops to 12.7 and restarts the inverter.

 

[Stepandwolf]

BATTERY IS AT 12.9V drop to 12.7 and it turns off my inverter

what gauge of wire from bat to inverter?

 

[T-486 Ashepoo]

Fully charge the battery to SOK specs (14.6 volts) without a load. Restart the inverter and see if the refrigerator starts and/or how long it will run.

 

[Bob B]

Have you triple checked all your connections? Seems to me that inverter should not have any problem running that fridge.
The inverter should be finde with 12.7V .... what happens if you have a full charge?

 

[559sanchez93705]

what gauge of wire from bat to inverter?

2 gauge

 

[John Frum]

Frigidaire specs are AMPS 6.0 VOLTS 115 HERTZ 60

6 amps is high.
I take that to mean that it draws 690 watts while the compressor is running.
The startup current to get the compressor rotor spinning could be 3-5 times that amount.
The inverter would then fall over and curl up in the fetal position.

 

[559sanchez93705]

Have you triple checked all your connections? Seems to me that inverter should not have any problem running that fridge.
The inverter should be finde with 12.7V .... what happens if you have a full charge?

just got new SOK BATTERY AND I just connected to the fridge to see if it will run it and that what kind of problems I was having.

 

[John Frum]

just got new SOK BATTERY AND I just connected to the fridge to see if it will run it and that what kind of problems I was having.

could also be the sok bms that is putting up the white flag.

 

[559sanchez93705]

6 amps is high.
I take that to mean that it draws 690 watts while the compressor is running.
The startup current to get the compressor rotor spinning could be 3-5 times that amount.
The inverter would then fall over and curl up in the fetal position.

the inverter is a 2000w peak out @ 3000watts it should run it.

 

[559sanchez93705]

could also be the sok bms that is putting up the white flag.

Do you think I have a bad battery?

 

[Stepandwolf]

2 gauge

I would have used at least 1 ga, or even 2/0. 2 ga is rated at 120A. BTW, the battery is only rated for 100A draw. Most lithium batteries can discharge at 1C vs. .5C. I would increase the wire gauge and put another battery with it in parallel.

 

[John Frum]

the inverter is a 2000w peak out @ 3000watts it should run it.

high frequency inverters surge duration is usually ~20ms.
That is one cycle of AC current.
A compressor could draw hard far in excess of that time window.

 

[John Frum]

I suggest you get an ac/dc clamp meter with peak hold function and a line splitter.
Then plug the fridge through the line splitter into mains power and see how much it draws to get the compressor spinning.

 

[Bob B]

12.9 volts is only 20% SOC or so ..... I would charge the battery fully and re-try with larger wire.

 

[John Frum]

My air conditioner draws ~750 when the compressor is running.
It takes ~25 amps @120 VAC to get the compressor spinning.

 

[John Frum]

12.9 volts is only 20% SOC or so ..... I would charge the battery fully and re-try with larger wire.

Is the 12.9 volts under load, resting or during charge?