Solar lasting power

[Whizzer]

Have looked everywhere.....can't seem to find the answer as to how long solar on a 231 RK would keep powering the refer with average temps 70-75 with no elec connected. Thanks.

 

[Hoopy Frood]

12 volt fridge, or residential? What size?

 

[Soundsailor]

You'll need to consider how much power does your frig use, how much power does the solar system produce, and how much battery capacity do you have to supply power to the frig when the sun isn't out.

The GD specs show:

8 cu foot frig - about 4 Amps per hour or say 90 Ah per day
165-watt solar panel - in theory about 12 Amps per hour (in practice less) for about 6 hours per day (with the ideal amount of sun) say 72 Ah per day
You'll need at least 18 Ah per day for the frig. Then add in all other uses of electricity in the coach, realistically 50 Ah minimum. The typical LA battery can supply 50 Ah per day, so in theory you can get by with the stock configuration (for a max of one day). In practice, you'll need more battery, get a 200 Ah LiFePo4 battery.

 

[Whizzer]

Thanx for the info -- much appreciated......

 

[BoredWeasel]

The question needs more details for an accurate answer. how many watts of solar, Chemistry of battery, amp hours of the battery. Is the trailer in direct sun, under trees and location with in the country, yes it makes a difference.

 

[ocbizman1]

You'll need to consider how much power does your frig use, how much power does the solar system produce, and how much battery capacity do you have to supply power to the frig when the sun isn't out.

The GD specs show:

8 cu foot frig - about 4 Amps per hour or say 90 Ah per day
165-watt solar panel - in theory about 12 Amps per hour (in practice less) for about 6 hours per day (with the ideal amount of sun) say 72 Ah per day
You'll need at least 18 Ah per day for the frig. Then add in all other uses of electricity in the coach, realistically 50 Ah minimum. The typical LA battery can supply 50 Ah per day, so in theory you can get by with the stock configuration (for a max of one day). In practice, you'll need more battery, get a 200 Ah LiFePo4 battery.

Agree, this is a math problem. You'll need to look at all the specs on everything in your rig and what it uses. My fridge is 12v and uses on average 3amps per hour. 72ah in one day. My old LA battery was 100ah. And previously I had just one 165watt panel. So for me, even before we did our solar and battery upgrade, the battery and the one solar panel could keep the fridge going 24/7 and power a few lights. Not much else.

 

[Conner58]

Have looked everywhere.....can't seem to find the answer as to how long solar on a 231 RK would keep powering the refer with average temps 70-75 with no elec connected. Thanks.

You need to test it yourself and see way to many verbals