Cubsfan143
New Member
Hello. Great forum. Learned a lot. But always need more data! Ha. Here is my situation, It’s an off grid setting. High mountain cabin. I was gifted most of this set up so while I’m sure you have good intentions, I’m not asking what I “should” have bought or etc…. Just trying to decide the best way to set up what I have to work the best. Thanks.
I have 100amh renogy smart lithium with internal heater. 2- 330w Trina panels. Vmp 33.6 v, voc 40.4v, imp 9.67amps, isc 10.30amps. So my question is based on the need for that internal heater to kick on it takes 4amps of incoming power. So I have long winter there. 2 or 3 months of temps from 0-32 degrees F. And it’s in a valley so the low winter sun only will hit the panels about 3hrs a day in the winter. and thAts the best spot I can find with trees and etc…I am only out there about 3days every 2 weeks. And currently running all my crap I only use about 2.5 amps/hr. So while having the battery be able to re charge daily would be optimal, I can be there 3 days with no charging of battery at all. But if the temp never goes above 32 the battery won’t ever re charge while I am gone. So back to my question, with only 3hrs of sun am I better off putting my panels in series and parallel? I’m thinking parallel to get more amps coming in to make sure that internal heater gets turned on and can warm up battery to take a charge? The panels will be mounted attached so no way to have at different angles for shade or what not. I don’t have a controller yet until I know how I will connect panels.
I am open to the heat pad idea. Just not sure if I will use more power doing that than I can re charge?
Thanks for any and all help and suggestions
I have 100amh renogy smart lithium with internal heater. 2- 330w Trina panels. Vmp 33.6 v, voc 40.4v, imp 9.67amps, isc 10.30amps. So my question is based on the need for that internal heater to kick on it takes 4amps of incoming power. So I have long winter there. 2 or 3 months of temps from 0-32 degrees F. And it’s in a valley so the low winter sun only will hit the panels about 3hrs a day in the winter. and thAts the best spot I can find with trees and etc…I am only out there about 3days every 2 weeks. And currently running all my crap I only use about 2.5 amps/hr. So while having the battery be able to re charge daily would be optimal, I can be there 3 days with no charging of battery at all. But if the temp never goes above 32 the battery won’t ever re charge while I am gone. So back to my question, with only 3hrs of sun am I better off putting my panels in series and parallel? I’m thinking parallel to get more amps coming in to make sure that internal heater gets turned on and can warm up battery to take a charge? The panels will be mounted attached so no way to have at different angles for shade or what not. I don’t have a controller yet until I know how I will connect panels.
I am open to the heat pad idea. Just not sure if I will use more power doing that than I can re charge?
Thanks for any and all help and suggestions