Ya. On the charge controller it says there's 18v input. I assumed that was what it was reading from the panels at real time. But now I'm questioning if that's what it is, or if it's the max option for my config
So question about adding more batteries.
Is there a safe way to mix lithium in?
Run them on a different charge controller? Or don't even bother?
Just looking right now. Volts says 14.6 (it's early morning hear and indirect sun.18V means it had the PV panels at Vmp, and you were harvest all power available.
Or, 18V was as low as it could pull them, and lower voltage would have given more power? What amperage did they show?
I always understood "2s2p" to be two in series with those two pairs then in parallel, that is, simply 2 series, 2 parallel. I've never heard of "2 strings", but maybe its just a different way of saying the same thing. 4s2p for 8 panels would be 4 in series with final out as 2 parallel. At any rate, you need to pay attention to the potential output of your solar array and the input capability of your mppt. You don't want your output to exceed the mppt's capability. You can juggle the series/parallel to make sure have a good match. Series increases your voltage and parallel increases your amps.Its a short form notation for 2 strings comprised of 2 panels in series
It is.I always understood "2s2p" to be two in series with those two pairs then in parallel, that is, simply 2 series, 2 parallel. I've never heard of "2 strings", but maybe its just a different way of saying the same thing.
Good to know. Thank youYou should also be wiring your batteries to pull from diagonal corners.
That will even out the wear and tear on your batteries.
see page 19 -- https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf
Thanks for the knowledge drop. I'll check these out.I always understood "2s2p" to be two in series with those two pairs then in parallel, that is, simply 2 series, 2 parallel. I've never heard of "2 strings", but maybe its just a different way of saying the same thing. 4s2p for 8 panels would be 4 in series with final out as 2 parallel. At any rate, you need to pay attention to the potential output of your solar array and the input capability of your mppt. You don't want your output to exceed the mppt's capability. You can juggle the series/parallel to make sure have a good match. Series increases your voltage and parallel increases your amps.
I'm no expert and you can see how much of a nob I am by going to my "sanity check" thread. At that point in the build of my system, I was really ignorant of what I was getting into. I have learned a lot since then, so I feel somewhat qualified to give advice. If you read thread, you will see a reference to a "string calculator". If you live in an area where the morning temps could be lower than freezing, then you need to run your panel specs against the string calculator to determine the highest possible output of your array.
Finally, the most important thing I learned in my struggle to get my system up was that I shouldn't have purchased anything until I had a good plan on paper. Unfortunately, you have made the same mistake I did. Your best bet now is to draw up your system in great deal and send it to this site and/or Renogy to make sure your system will work as you expect it too. Take pictures of of the specs on your panels. As you can see from my thread, there are lots of smart people willing to lend a hand. Best of luck! vw
On edit: Buy all the tools you will need. Get a GOOD crimper for each wire size you will be dealing with and get a kit of ends. Here is the stuff I bought:
And, most importantly, Will's book....
Mobile Solar Power Made Easy!: Mobile 12 volt off grid solar system design and installation. RV's, Vans, Cars and boats! Do-it-yourself step by step instructions.: Prowse IV, William Errol: 9781546567110: Amazon.com: Books
Mobile Solar Power Made Easy!: Mobile 12 volt off grid solar system design and installation. RV's, Vans, Cars and boats! Do-it-yourself step by step instructions. [Prowse IV, William Errol] on Amazon.com. *FREE* shipping on qualifying offers. Mobile Solar Power Made Easy!: Mobile 12 volt off...www.amazon.com
Just went through your amazon links and looks like I got pretty much the same stuff as you. But I already had all the tools and terminal connectorsI always understood "2s2p" to be two in series with those two pairs then in parallel, that is, simply 2 series, 2 parallel. I've never heard of "2 strings", but maybe its just a different way of saying the same thing. 4s2p for 8 panels would be 4 in series with final out as 2 parallel. At any rate, you need to pay attention to the potential output of your solar array and the input capability of your mppt. You don't want your output to exceed the mppt's capability. You can juggle the series/parallel to make sure have a good match. Series increases your voltage and parallel increases your amps.
I'm no expert and you can see how much of a nob I am by going to my "sanity check" thread. At that point in the build of my system, I was really ignorant of what I was getting into. I have learned a lot since then, so I feel somewhat qualified to give advice. If you read thread, you will see a reference to a "string calculator". If you live in an area where the morning temps could be lower than freezing, then you need to run your panel specs against the string calculator to determine the highest possible output of your array.
Finally, the most important thing I learned in my struggle to get my system up was that I shouldn't have purchased anything until I had a good plan on paper. Unfortunately, you have made the same mistake I did. Your best bet now is to draw up your system in great deal and send it to this site and/or Renogy to make sure your system will work as you expect it too. Take pictures of of the specs on your panels. As you can see from my thread, there are lots of smart people willing to lend a hand. Best of luck! vw
On edit: Buy all the tools you will need. Get a GOOD crimper for each wire size you will be dealing with and get a kit of ends. Here is the stuff I bought:
And, most importantly, Will's book....
Mobile Solar Power Made Easy!: Mobile 12 volt off grid solar system design and installation. RV's, Vans, Cars and boats! Do-it-yourself step by step instructions.: Prowse IV, William Errol: 9781546567110: Amazon.com: Books
Mobile Solar Power Made Easy!: Mobile 12 volt off grid solar system design and installation. RV's, Vans, Cars and boats! Do-it-yourself step by step instructions. [Prowse IV, William Errol] on Amazon.com. *FREE* shipping on qualifying offers. Mobile Solar Power Made Easy!: Mobile 12 volt off...www.amazon.com