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( I HAVE QUALIFYING DATA ) In reply to the last episode: Well thank you for the information, I still think that LFP Lead Acid Drop In Replacement batteries are safe to use with non-programmable PWM Charge Controllers, Simple wall chargers, and other 12v charging equipment, including "dumb"...

Ah, okay, a lot of people seem to be saying this. There's no way for me to turn off charging from my MPPT Charge Controller - there is no "cutoff voltage" setting. How do I tell my charge controller to stop charging? For over 2 years now I have relied on my BMS to stop the charge cycle with...

Yes, thank you. But even with the default settings, the Battery BMS kicks in and stops the charging cycle. There is literally no way for me to stop the charger from sending energy to the batteries. What am I missing How do you stop your charging cycle? Thanks again

Hi, Thank you. I now see that almost everyone is saying the same thing, that I shouldn't use my BMS to stop the charge cycle. For 2 years I used a simple non programmable PWM Charger to charge My LFP Battery and the only way the charge cycle would stop is when the Battery's BMS would stop the...

Well, I just ordered 3' 6AWG Silicone Tined High Amp Wire. We will see.. I know for sure there is some resistance form the wire. But as someone (Browneye) stated in the comments above; "The battery voltage displayed on the SCC is with the charge current added on top of the system or battery...

You seem to be the big brain on this forum, respect intended. Does "Charge" flow faster than "Current" If, "Chare" (for practical purposes) flows instantaneously, and "Current" flows A LOT SLOWER, would it be possible to explain the Vdroop on a line? I am not as technical or advanced as...

am just all around tired, angry and bitter, but that did make me laugh - they do look like shit! I built that cable a couple years ago when I first started, its so stupid you have to spend 30/50/100/200/300 dollars on tools you will only use once or twice a decade. I really really would love to...

Okay. I got what you are saying, and I see the theory you are invoking, and I essentially agree with it. Wires are not "HOT" they are warm. There is no doubt there is some resistance. What are your thoughts on this statement by Browneye "The battery voltage displayed on the SCC is with the...

I understand and I got it. I do have to say, some of the comments were completely disrespectful, repetitive harassment, and personal attacks. I have a thick skin, but look closely and you will see a pattern of me repeating my statements and assertions, not because I was trying to prove, over and...

Okay. Thank you. I would rather not fill this thread with a conversation about this, because it would be nice if it was just filled with user system configurations and measurements, but I see what you are saying and agree. It's not a perfect world. That said, I do recommend you take a look at...

Hi, thanks, again, and I don't mean to be a pain, but there is no setting to stop the current from flowing from the charge controller to the battery. Also, can I kindly ask, how do you stop your charging cycle on your system?

I'm not in a Cult, I'm in a SUPERCULT of 1, And don't forget, tomorrow I will still run the test as i laid out above. We will see. There may still be some/a lot higher vdroop in the line than people expect. And I still want everyone else's real world measurements - it can't hurt to have real...

Do you every charge to full. How do you actually stop the charging cycle?

Thank you. Ahh, yes thank you. That is my old PWM charger that I swapped out - I used it for 2 Years and it works great. I still keep it as a backup. It seems that everyone is saying pretty much the same thing, so as I have already stated, I will be swapping out the wires from 8AWG to 6...

Where are you getting that from? Have you actually watched any of Wills videos? Have you watched any of Hobos Videos? Or Lithium Solar? I really want to know where you are getting that from. The Professionals, Including Will, Hobo, Lithium Solar, DPoz, all whom test and evaluate hardware for a...

Hi, thank you for all your help and advice on my system, I appreciate the extra eyes on it so I have confidence I haven't missed anything. Your help is greatly appreciated. Hi, yes, I did make that clear several times to other people, but those are the wires that connect to the the 250A Busbar...

What charge controller are you using, and can you show me the settings you use. Do you have a custom BMS profile for your LFP Batteries?

Well, I will run the test tomorrow with the upgraded cable directly into the busbars/battery and we will see. I still don't see your specs like I have asked people to help with. Do you think a real world data set would confirm what people are saying, and if so, do you expect people to give their...

Texas-Mark said: I just noticed that he is measuring on a lug that is not even connected to the battery. Why????? Hi, i don't know how to double reply so here is my reply to Tex "Hi, thank you for all your help and advice on my system, I appreciate the extra eyes on it so I have confidence I...

Hi, yea while I do have the allowable voltages cranked up to eliminate the charge controller from being a bottleneck in any way, as I said before, my batteries and never full when in use, and when I am not using the system, i charge up the battery and turn the system off. I appreciate your...

Thank you for your cordial reply and perspective. I respect that. I too would love to have double protection, especially with a system that had data ports so I could get the absolute most energy into my system and still have the layers of safety you mentioned. I do have a message out to the...

Hi, thank you for all your great help and the great information. It sounds like your Renogy Rover has some type of cut off voltage and stops charging once your batteries are charged up to a set voltage. My MPPT does not have any type of cut off voltage in the "USE" (User) Parameter settings. I...

Thank you for your information, it has been well received. Can you please help us all by giving your readings as outlined in this post - thank you for all your assistance https://diysolarforum.com/threads/help-needed-if-you-have-a-1kw-or-less-solar-system-w-lithium-iron-phosphate-batteries.46036/

While I agree that nothing should get hotter then a couple degrees above ambient, I have a couple questions. What is the rated capacity of 3 feet of 8 gauge AWG wire. Is it 50 Amps? And what about cable that is rated to get hot like "Silicone Tinned Copper that is designed to Withstand...

Hi, thanks, pretty much everyone is saying the same thing as you and, I guess a 1 volt delta from the charge controller to the battery is an issue, and is definitely questionable. max amps through the 3 foot 8 gauge AWG thin strand silicon wire is 33 amps, while the charge controller is max 40...

Got it, I will try. I already know there is some resistance on the line, and I am upgrading from 8 to 6 AWG. But it does not explain the discrepancy of 14.7 at the SCC and 13.6 at the Battery Terminal... (Something I am trying to figure out and explain...) If you have LIFEPO4 connected to your...

Gonna google that right now... : - ) Could be the wire, could be a hidden variable, either way, as I have told all the ppl in this community; thanks for the help, and I will swap the wire, double/triple check all the connections and keep people updated. Thanks again!

Oh, Hi, I thought I made it clear to you and the others on this forum, many many many times that I am swapping out the wire with larger wire and double checking the connections - but just incase you missed it, I will state it again; I am upgrading the wire and triple checking the connections...

Thank you. Please tell that to half the other people posting on the posts about this. This misconception and misinformation is so bad it actually is causing people (like me when I was researching) to have wrong information. I have been told so many times on this forum by many different sources...

Hi, here is an example of a "LFP Lead Acid Drop In Replacement Battery" Fully Guaranteed by the Manufacturer for 5 years, and I quote: "You do not need a special lithium charger or lithium solar controller" Guaranteed for 5 years by manufacturer! I recommend you watch the whole video and...

I have a Bluetooth App that tells me my BMS values on one of my 2 batteries. Even with the default "LI" preset the only way my battery stops charging is when the BMS shuts off the charging, I can see the BMS Flip off charging, and I can not "turn on charging" until the voltage drops below the...

Cool. Well, my 8AWG wire should be good for the system I am using seeing as I am using around ~30 Amps, and no more. I did order Silicone Tinned Copper Wire 6 AWG 3' and I will swap out the wires, but I don't think the wires are solely responsible for the Vdropp, and I think that the battery is...