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.... and I believe we should have lots of diagrams, charts, schematics, etc. For me, a “visual” conveys way more information than words! Words can be so imprecise. Also, a visual gives a common reference point to guide a discussion to avoid statements like “Oh, I didn’t know you were talking...

Maybe this can morph into a discussion for those of us interested in buying preassembled LFP Batteries? As I mentioned in another post, the economics not really there when you need to buy 32 to 48 cells, BMS(s), build a battery box, etc. My goal is to find a great vendor, who discloses the...

Thanks for the input. Batteries are over 20 years old and were well maintained by the prior owner and myself, however will now go forward and replace with LFP. Thought you might enjoy a video of the “Smokin Battery”, but it looks like videos can’t be uploaded

Thanks! Great Diagrams

YYYAAAAHHHHH!!!! My quest for some form of organization of all of this information is about to come true!!!

I was recently pointed to the "FAQ Section" and was impressed with the organized information I found there. I don’t know why I didn’t get there before! However, I couldn’t find a specific thread on how to do a capacity test & why to do a capacity test? I can see the point to do it if you are...

Xuba Electronics: DEAL - 280AH LiFePo4 cells. Purchase & Review There is enough information in this one thread noted above (around 650 posts) to likely complete half the Wiki! I like ”tictag’s” idea.

I am also off grid in B.C.; What is the balance of the system?

Greetings! This is my first post to this Forum. We currently have an old 24v 850Ah lead acid battery bank. I am intrigued by Lithium when I need to replace the battery bank and believe I have sufficient skills to build a 24v 1000 Ah replacement along with an increased PV Array. When snooping...

Good sized System! Nice I will be looking for LFP Batteries; seems so many Vendors to choose from? Would be nice to find a a good reliable one! I hope you have found one.

Thanks for this advice. I believe this is what I sought; will let you know if I have anything constructive to add.

Ton of info here!

Thanks for your assistance; maybe have to go to those 500 watt panels like I believe you ordered!

I appreciate that the Wiki has started and wanted to Thank "upnorthandpersonal" for taking the lead. So from one who is trying to understand this vast topic and at say an intermediate level, I would hope there is a place for us to post questions that we would like answers. So for instance we...

I think this is a great idea!! There is so much information on this forum, but it is such a cluster to try to find it. I have suggested some topics, but they don’t seem to get traction. There seems to about a dozen of you that do the heavy lifting here; you must be getting tired of answering...

Is someone willing to start a “Capacity Testing Procedure” Thread? What Equipment? How to hook up the Equipment? How to conduct the Test(s)? How to record the results? What do the Results mean? ???

Ghostwriter66 - at your work, is there a voltage you use to correspond to 10% DOD ?

Thanks for this; if I were to replace it, which I might do, what would you recommend?

Thanks Craig!

So that I understand calculation of acceptable A into a Lead Acid BB; I currently have 12 - 2V Batteries (85T - 17) rated at 1065 Ah at 72 hours and 850 Ah at 20 hours. I read somewhere that an acceptable charge rate is 10% of the 20 rate, so in my case 85 Amps Max. The formula suggested above...

...and following from that; is there some way we could have an area where we could get images like these, for all kinds of devices, battery configurations so that we could relatively simply "build" our proposed system?? So, I will grab this battery pack, this BMS, this positive bus bar, this...

SolarKimmy; Do you have a link to those batteries?

No shading issues. MPPT is rated for 250v, but as I understand it, as it gets cooler, voltage rises which could overload the SCC, so reason I went with the two strings mentioned. so, 4 gauge copper it is??

Thanks!

Thanks for these helpful comments. Will forget about the “Y” Lithium cells. Yes, have the space and yes, can make adjustments to keep room warmer. Like both the idea of upping insulation & and the warmers.

Appreciate the assistance and thought a "very rough Diagram" may help you. Specifics of the two PV Arrays, the Old and the New are set out above. Plan is to install the New Array and remove and sell the Old Array A represents the existing wire from the Old Array B is the idea of "adding on" a...

I believe I am going to be replacing it as I don't know of a way to wire the 9 panels effectively to the MPPT; it is a Victron Energy 250/100 and I believe I would exceed the specifications if I were to hook up the 9 panels, especially when temperature coefficient is applied. If I could use the...

A few more questions, if you don’t mind; I would like to go through the numbers , as I understand them. I must say your advise to deal in “kWh” helped to clear up a lot. 1. Solar Panel - looking at 6 - 400 watt. Seems the 400 Watts is nominal as they have a Voc of 41.23 and an Isc of 9.75...