10hr fridge test on inverter - fantastic!

[daveesl77]

Did an all day test using the 50 w. solar panel and inverter to run the little 3 ft3 dorm refrigerator. It worked fanstastic. The battery is an old car battery a neighbor gave me a year or so ago. I had charged the battery overnight with the regular charger. Disconnected all 120 v and started up the fridge at max cool at 8am, no solar on, straight pull from battery/inverter. Turned on solar at 9, but overcast. By 10am the sun was out, fridge running with no problems and battery was getting charged while running the system. I ran it for 10 straight hours, on high, with outside temps in the 90s. Not a single problem! Tomorrow I'm going to test the system with the little AC I picked up at a junk yard for $15.

Solar is the 50 watt Renolgy, inverter is 2000 watt Centech, fridge is a Haier 3 ft3, battery is some older Mopar from my neighbor's pickup.

dave

[ukewarrior]

What Solar controller are you using?

[lrrowe]

Interesting results Dave.
Thanks for posting it.

[M C Toyer]

What was the battery voltage at the end of the 10 hours?

[daveesl77]

On the battery voltage, that is why I finally shut down the test, it had dropped to 11.9, but the inverter was still putting out 116. Also, by about 3 pm, was getting about a 40% cloud cover, so last 3 hours of the test the panel had a fair amount of cloud cover and voltage dropped slowly. Starting voltage on the test was at 12.33, got up to 12.5, ended at 11.9.

On the charge controller, I don't remember the brand, but the model number is CMP12. Was about $15 on Amazon.

dave