Putting my solar system to the test

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Putting my solar system to the test

Postby Syberia » Fri Aug 25, 2017 2:04 pm

Last week I finally got the chance to really test out the solar/battery setup on my trailer. I have 3 100 watt panels, a cheapo PWM charge controller, and a 225 ah battery. I used this to power a mini fridge/freezer (~60 watts, 120v, ran when it wanted to), small crock pot (45 watts, 120v, ran for ~8 hours on two different days), TV (~40 watts, 120v, used 1-2 hours a day), and various fans, lights, and chargers. Over the course of 6 days, the lowest battery voltage I ever observed was 12.4, and that was with the fridge running so I'm sure the resting voltage would have been even higher. By the end of day 5, I was sitting at about 12.8-12.9 right before I went to bed, so it's capable of fully recharging during the day. The 120 volt appliances all ran just fine off of a cheapie 750 watt modified sine wave inverter.
Syberia
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Re: Putting my solar system to the test

Postby Esteban » Fri Aug 25, 2017 3:06 pm

:applause: Bravo!

You can increase your solar power harvest by upgrading to a mppt solar power charge controller, if you ever want/need to do so.

Or you could reduce your power needs with a more efficient ac/dc fridge freezer in the future.
Steve - SLO, CA
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Re: Putting my solar system to the test

Postby Syberia » Fri Aug 25, 2017 10:08 pm

Yeah, my thought process was basically that I could buy a whole lot more panels for the price difference between a 120v fridge and a 12v one, and most of the 12v ones don't have a true freezer.

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