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Solar Panels - Information and Questions
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<blockquote data-quote="Wally69" data-source="post: 431668" data-attributes="member: 1916"><p>Hey Chris, you questioned the current tech vs what you have. Just tested mine, it is about the same size but is a 20w panel, so looks like they have doubled the realestate efficiency between ours and a 120w panel looks about 3 times as big.</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/1916/1533873265_f6f5c8b6-47bf-4692-87cb-0c0d7bfbcfec.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/1916/1533873286_2292ef4d-3df9-4997-aa49-a768881ce4c4.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Mine is rated about 1.2A but tested at 0.67A at 19v in the winter sun. Based on the calculations a couple of posts up, your two combined should be about the same. Real question is what will it store in a normal day based on those figures and what can it drive. I got mine to run a LED strip light and charge the SDC batteries overnight. I have a handful of 12v 45w 10min rated computer server batteries to hook up to it but havent given it a good test run to see if it is reliable.</p><p></p><p>An upgrade for me would be enough juice to keep a fridge cold and do the above, already have a 36Ahr Engel battery for the job. I assume it would take the existing panel 0.67A x 19v/12v x 8hrs = 8Ahrs/day or about 5 days to charge it. My fridge will flatten it in 2, so would need 50w at a minimum. Upgrading at 120w and a higher capacity battery makes sense to me as it always rains when I head away.</p></blockquote><p></p>
[QUOTE="Wally69, post: 431668, member: 1916"] Hey Chris, you questioned the current tech vs what you have. Just tested mine, it is about the same size but is a 20w panel, so looks like they have doubled the realestate efficiency between ours and a 120w panel looks about 3 times as big. [img]https://www.prospectingaustralia.com/forum/img/member-images/1916/1533873265_f6f5c8b6-47bf-4692-87cb-0c0d7bfbcfec.jpg[/img] [img]https://www.prospectingaustralia.com/forum/img/member-images/1916/1533873286_2292ef4d-3df9-4997-aa49-a768881ce4c4.jpg[/img] Mine is rated about 1.2A but tested at 0.67A at 19v in the winter sun. Based on the calculations a couple of posts up, your two combined should be about the same. Real question is what will it store in a normal day based on those figures and what can it drive. I got mine to run a LED strip light and charge the SDC batteries overnight. I have a handful of 12v 45w 10min rated computer server batteries to hook up to it but havent given it a good test run to see if it is reliable. An upgrade for me would be enough juice to keep a fridge cold and do the above, already have a 36Ahr Engel battery for the job. I assume it would take the existing panel 0.67A x 19v/12v x 8hrs = 8Ahrs/day or about 5 days to charge it. My fridge will flatten it in 2, so would need 50w at a minimum. Upgrading at 120w and a higher capacity battery makes sense to me as it always rains when I head away. [/QUOTE]
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Solar Panels - Information and Questions
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