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HEADER: FOR DATA GATHERING PURPOSES, PLEASE LIMIT THE COMMENTS IF YOU DO NOT HAVE THE REQUESTED INFORMATION – THIS WILL HELP THE PROCESS OF GATHERING REAL WORLD DATA – THANK YOU If you feel like commenting on this post, please at the top of your comment state: I Do Not Have Qualifying Data –...

Hi, I read your reply, and agree with you. I do, by the way, have thin strand high temp silicone 8 gauge AWG wire at 3 feet. It is well within spec, but as I have mentioned before to others, I will be swapping that out for 6 AWG wire and double checking, triple checking all connections, wires...

You are so correct. I wasn't using it correctly for 2 years, and that is why I keep using my system and continually getting more and more power out of it, while incrementally upgrading each and every component, because it's all broken and doesn't work, and I have no idea what I am doing and I...

Edit: Okay, so there are a couple things that I noticed that VERY WELL COULD BE CAUSING Voltage Drop on the line from the Charge Controller to the Battery First Picture: Janky Wire Connectors, do not look to be copper, maybe aluminum - Also, a couple strands are not in the connector (Did a...

No Sht! I just realized that the wire is copper coated crap! Look at the very end of the strands... Do you see the aluminum discoloration!

Hi. So, there is a persistent misconception that the line voltage from your charge controller to your battery IS the batteries voltage, and if it is off, there is something wrong with the system. This is inaccurate. The charge controller "charges" the line from your "charger" to your...

cable was "added to cart" but I got distracted by everything else on Amazing and i forgot to pull the trigger! lol I have a #6 cable that is connecting my 2 old lead acid batteries in parallel, I will use that, but its been too hot and I am busy with a thousand things, and if i get to it, it...

Are you talking about that video that DPoz made? He said the same thing and YES, I have those exact 40$ "cheap" but way overpriced IMO busbars! They should be able to handle 33/40 amps though... right? They are rated for 250 amps and nothing else was on when I did these tests... - thanks for...

Thank you. Can I hit you up for some other questions about my system later? Thanks for your help.

Hi, sorry I think I replied to a few of your posts tonight - just trying to catch up and absorb as much information as possible. As for the Shunt idea. That is actually a really good idea. I do have a main battery that has a Bluetooth BMS but I also have a second battery that I have been using...

Hi, I am sorry if you already read one of my replies regarding this. I'm looking back at the posts and trying to gather as much information and learn as much as I can, and everyone is pointing out this Voltage Drop, or whateveritis... and I am on it. Thank you. I am already planning on...

I was having the same problem you were, but I'm using 12v not 48v. I guess this issue is resolved because you spent the extra money and got the Victron, something I can't afford at the moment. People don't understand this, but the charge controller (most of them) charges the line from the...

Hi, thanks. Working on tuning the system for sure. I realize that everyone has told me several flaws in my system and I'm looking at each and every one of them and evaluating them. Thank you. The main issue is that there is a 1 volt delta from the Charger to the Battery. Essentially, from what...

Hey, thank you for that information. That is very clear. Can I ask you what was the batteries state of charge? I don't want to re-repeat my questions, or requests, but I did post this Thread, and if you could make sure the battery is sufficiently depleted & take the measurements around 12/1pm...

Point of Fact: Maxwell's equations are relevant to both AC and DC Thank you for your interest in this. Do you have any data set that states the Charge Speed, vs. the Current Speed? Do you have any equations built into the Ohm's Law in regards to the the Quantum Mechanical Principles in the...

Dear Sir, I beg to differ. The Battery State Of Charge IS very important, because the lower the State Of Charge, the more the battery will Absorb. Again, thank you for your readings. You, and maybe one other person, are the only people who have actually attempted to give readings, but I didn't...

Hi, another reply from me. I am trying to go over everything and make sure I gain as much knowledge as I can. Thanks for your help and all the information you have been providing. I replied to several of your other posts and you make some great points. I am working on getting the larger wires...

I will be the first to share my values Charge Controller: In App & at Terminals - 14.44v Img 1 & 2 Battery: In App 3.4v - At Busbars, closest to terminals I could get & before the BMS: 13.51v Img 3 & 4 1. Panel Size & Specs 6x100w Solar Panels Parallel 2. Charge Controller Specs 40Amp MPPT...

Oh, hey man, Thanks. Yea I just want to say thank you to you all everyone who has been so helpful with my system. There are many issues to investigate and resolve. but as I said to several other people, I will be upgrading the wire to high quality 6AWG, and I will double check, triple check...

Hi, when you say "ground wire length" are you talking about the "Black Negative Wire" - if so, it is the same size as the Positive Negative Wire. As for a "Ground, Ground" - like in modern home AC systems. There is no ground from the panels to the controller, battery, or inverter. They are all...

I do not have a fuse from the SCC to the Battery/Busbar. The SCC has fuse built in. This evening, very shortly, I will be swapping out the 8AGW for a 2'6AWG, and tomorrow I will take readings from morning to night. What is your system configuration, and what are the readings at the terminals...

Yes, there is a "boost" voltage - see pic Hey, while I got you, what are your system specs? Can you yell me how you use your system &, if you can, under peak sun, tomorrow, please take a reading at the terminals of your Controller and Battery. I am trying to build a dataset for reference...

Not sure. I did take off the load (mean, I turned off the BMS so that the battery stopped charging, simple toggle on and off...), just to test and I saw the solar voltage was 19.v so maybe its due to voltage drop over the whole system, from the panels, 4 panels using standard parallel connector...

Oh yea, man. I totally agree with you; that sweet spot of 3.45 for both charge and disconnect voltage would be great! But I recently have been running in parallel a second super cheap 200Ah Chinese Battery with no BMS App or settings, and so, I picked 3.55v - a balance between the batteries. I...

Hi, thank you; I did google the Dunning Kruger effect. I will take that as a compliment, even though I realize it wasn't. But that is okay. There are a lot of contensious points that are being argued about, but at the end of the day, the only way to get real world data is if as many people as...

Hi, yes, others have pointed out that Browneyes statement didn't reflect the large 1 volt delta that is being seen from the controller terminal voltage to the battery terminal voltage. I have been working on thanking everyone for their help and learning as much as I can from this great...

Disclaimer: The next statement is a tongue and cheek joke/hypothetical analogy/conceptual conveyance of (its way to late tonight) far-out concept My Battery is a Black Hole and the Event Horizon is somewhere on the line from the Battery to the Charge Controller! lol

yea, its late, I can't wind down, but I can't think anymore either. I hope to tear into it tomorrow - hope its not too hot. Thanks again for the great community and all the details, I really missed a lot of points and I think growing pains are good. It will mean I have a rock solid system - the...

Yes, agreed. I put a heavy (4 my system) ~900 watt continuous load on my system and I am still seeing exactly 1 volt difference between the Charge Controller and the Battery BMS Voltage. Cables are hot, but not unsafely so, and the cable is technically well within spec, so yea, as I said I...

I hate to tell you this, but you are incorrect. Laugh Out Loud, I'm just joking, I couldn't help myself, sorry & thank you Hey, if you have a qualifying system can you post your readings - thanks again...

With respect, and only about this point I quoted above; I beg to differ. I had a NON PROGRAMABLE Charge Controller designed for Lithium Iron Phosphate and recommended by Will on several of his videos (Renogy Wanderer 30 Amp, He got an affiliate commission too...) that I used for years, and it...

Hey, if you can, if you have a qualifying system, can you give your readings. Ideally, make sure the readings are at peak sun, and your battery state of charge is low, below 70% - closer to 50 or even 40% SOC would be even better - thank you for your interest in this, thanks again...

Have you used a Non-Programable PWM Charger designed for Lithium Iron Phosphate like the Renogy Wanderer - that has been recommended several times by WIll? With this Solar Charge Controller, you can not program it, and the only way it stops charging is when the battery BMS turns off the charging...

Hi, I will be replacing the 3 Foot 8 Gauge AWG Thin Strand Silicon wire that connects to my Charge Controller to the Busbars (250A Rated) on the system. (wires from busbar to battery are 2AWG.) I am just waiting on delivery of the new cables. I say this first because my system is in a cubby...

Okay. How do you account for the Vdroop from 19v to 15v from my panels to the charge controller? Those wires are also in spec and industry standard. That is a massive vdroop, the wires are fine, and I am getting 95+% available amps into my battery and it is the hottest time of year. How do you...

Well, what ever theory they are trying to use doesn't match up with the reality of the situation, nor does it move the conversation in the right direction. To tell people there is something wrong with their system because the voltages don't line up is not true, or at best, wholly over...

Hi, Thank you, you have been really helpful. I really appreciate your advice. I am running the 40Amp MPPT Charge Controller through a 3 Foot, 8 Gauge AWG Thin Strand Silicon Cable with a T90 Connector to the 250 Amp 4 3/8" Stud Busbar, and that connects to the Battery with a 2AWG 2 foot Cable...

I hate to tell you this, but you are not correct. As I already said, the Renogy Wanderer 30 Amp charger designed for LIFEP04 does not cut off the charge current to the battery until the BMS on the battery kicks in. There are literally dozens, if not hundreds of wall chargers that do not stop...

Whelp, Partials Concession Speech: I was partially wrong. I'm on it - I will update the post as soon as I have the pictures moved to the computer

I'm begging to like you. I mean, come on, are you trying to find fault and argue with every last thing it say? I'm sure by the end of the day I will have a good handle on your thought process and I will actually be able to communicate with you. lol This is my old Wanderer I used for 2 years...

Hi, I don't know if I am supposed to reply to everyone who replies to me, due to me repeating my plans and answers, so if you already read my most recent replies, sorry. Thank you for your very insightful analysis on this. 33 watts is a lot of energy and I think you guys might be right. I...

Ahh, okay. There is no way for me to turn off the charging from my MPPT Charge Controller - there is no "cutoff voltage" setting. How do I tell my charge controller to stop charging? As I have said, for over 2 years now I have relied on my BMS to stop the charge cycle with my old PWN...