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I have not read the entire thread. Apologies. My question is, do we know, did the arc start a fire that spread to the batteries? Or did incoming power overload the batteries somehow, and then the battery cells actually initiated the fire? I ask because I travel in a yurt, therefore I have my...

I suspected it was like that. Thanks. I guess I'll have to look at higher voltage.

Can I boost a single[or 2] LiFePo4 cell up to 48v? I'd like to try to run my ebike on LiFePo4 cells. A single EVE lf280k would theoretically provide 17+ah @48v. This would be pretty compact and simple to manage. Would I suffer tragic losses in the conversion? Would a converter of sufficient...

Would it be within your budget to run everything in 24v, and use a step-down converter to run your inverter? I feel your situation. My system is 12v, but only because my 2kw inverter keeps running. Every other part of my system could be converted to 48v, if I choose, but, frankly, it does...

As long as he doesn't have bears in the neighborhood.

I did not read the whole thread. I am, and always have been, off-grid. I have little authority to speak on anything else. That being said, and with your desires in mind, this is what I would do in your situation. Build an off-grid, standalone system with batteries. Build it like an rv system...

Sorry. I returned that unit after just a few days. I live in a yurt. All my gear lives inside with me, and that loud fan was a deal-breaker. It was driving me crazy, turning on and off constantly, and sounding like a loud hair dryer. I can't exactly recall. That was 3 years ago. Anyway, I got a...

My worst mistake yet was over-paneling my Renogy 40 Amp cc. I connected 8 100 watt panels in 4s2p configuration. It overheated the dc output clamp. I ended up accidentally desoldering the dc output clamp from the circuit board. Controller still works, but I don't have the ability to repair...

Thanks..

Off topic-ish. I'm trying to find Amy Wan, and I cannot find her on Alibaba. This thread mentioned a website? Does anyone know where to find her store these days? I got cells from her a while back, that are working fine, but I want some accessories.

I came here with the same issue with my Daly R05A-Fj15 bms. The green power lead for the bt dongle appears to be only outputting 1.4 v. I will update after I attempt a fix. This item is not currently in my workshop. Thanks for the pointers:)

I just discovered that my charge controller is water resistant! I don't need that, usually, but my yurt collapsed while I was away from home for two months, and my cc survived:) I was pleasantly surprised. I've never had a Victron product fail. Only own two pieces, so far, but I bought a used...

Do you not know the make and model from which you removed the cells?

I have no experience with on-grid, but it still boggles my mind that these things are designed this way. If I ever get tied, I will probably design my system like a big RV. Bank charges off solar or the grid, with programmable parameters. House runs off the bank until it reaches a set low soc...

Thanks Eggo. Yeah. Would not have been my choice, but was not my decision:) It is a marine battery, and is rated for 'deep cycling', but I agree. It's my camp neighbor's first foray into solar. She will learn. At least she has four of them, but only two in the bank right now. I seem to have...

I have a friend setting up a VoltEdge® M24-700ST battery, and we cannot find a user manual with charge parameters anywhere! Anyone got any advice?

I keep trying to talk the Renfaires that I work at into installing solar. The huge parking lots sit empty most of the year. People could park and party in the shade, operating costs would be cut, and the rest of the year would be pure profit. Imagine you're on a an xc road trip, and you pull off...

Well, I finally had enough sun to top off all four packs, with the cc set to charge past the top voltages in the BMSs. Then I took notes on the average variance between the cc and the packs. I don't run a shunt at the moment, so my cc and my packs never show equal voltages. Then I reset the cc...

Understood. I also do not run heat at night, so I can understand. This is one thing to consider when deciding what chemistry is best suited to a situation. I hope you can come up with a good solution. May have to invest in keeping your battery room warm, or at least one corner of it. AGM...

LOL Lol, no. I'm using a Victron 150/100, which cost more than my first car, and I'm in parallel, not series. My system has to move 5 times a year, too, and I want to keep it as compact as possible, so I'm not going to buy four more CCs, with all the attendant cabling, even though each one...

I will go though my settings again. I will use: Absorption: 13.8V Float: 13.6V I will set my BMSs to cut charging above 14.2. I don't have a shunt right now, and my CC and the BMSs rarely agree, so I will have to fudge some numbers. I don't have a diagonal. The Victron bus bar (lynx PowerIn)...

I think I had the CC set to 13.5 cutoff, whereas the BMSs are set to 14.5. I forgot about the BMSs being for series?rather than parallel ? It had been my assumption that the four individual packs would just spontaneously self-level. That does not appear to be the case. At night, with only...

Agreed. It depends on how long he 'blasted' the heat. If the sensor is located deep inside the battery(as one would expect from a pro-built) then he may be okay. If the sensor is just dropped inside the case close to the heat source, he could still be damaging cells. Not to a jerk, but how many...

I have a LiFePo4 bank with 4s4p. I have four 12v packs, each with it's own BMS. The packs are keeping good balance, individually. Each pack is wired to a Victron Lynx PowerIn busbar, with each pack having it's own megafuse. The problem is that the packs are drifting out of balance from...

Ok. I've rewatched the video, and read the entire thread. I have to ask some questions that may seem insulting, but please don't take offense. When you had voltages spiking really high, did you have your batteries in series or in parallel? You don't say, but it seems that you are running a 12v...

I think he's saying, get an external heater. They're cheap. Less than 30 bucks for a seedling heater on Amazon. Then the internal heater becomes a last resort. The seedling heater is programmable. You can set it to desired/required temp, and it will turn itself on and off. It also has a digital...

My bad. Didn't consider. I was picturing mylar outside of a layer of foam, but this is a very good point. I edited my previous suggestion.

I'm currently at low altitude in Texas. You should see what happens when I'm camping at 7000 feet in Colorado in the summer! My bank is usually full before I get out of bed in the mornings? I think I pulled 115% of nameplate one day. Freaked me right out! Had to disconnect panels. When I travel...

Quotd: After a day of 3A charging, it finally GRADUALLY came up to 14.4V, which I think is more honest, but it still drops way below 14v when disconnected. How did you read this voltage reading? It is likely you were reading system voltage, rather than true battery voltage. I don't know why the...

This makes sense. It's an unfortunate fact that the battery is most likely to experience freezing conditions at night, when there's no incoming from PV. Therefore, the battery will experience a deep freeze condition. The battery cannot accept incoming power when it is deeply frozen, therefore...

I must say, I DID do a TON of research before ordering my cells, but once they arrived, I had no issues, and the builds were quite easy. I built 4 individual 12v packs, charged them nearly full with my solar@50 amps, then took them apart, topped them individually, paralleled each set of 4 cells...

I sent them pics of the damage. I took these pics today, and my panels are covered in pine pollen right now, but the pics I sent were similar to these. I have to clean off the pollen daily this time of year. There's no avoiding the pollen. I also had all serials and purchase records. These...

Well, I hadn't checked this thread in quite some time. I missed a bunch of drama! lol. I just popped in to say that I now have all 16 cells assembled into 4 12v packs, in parallel, and they are working perfectly. Each 12v pack has it's own bms, and they are connected together through a Victron...

Agree, HOWEVER, some of these server rack batteries are actually cheaper per watt, I think. I hate to admit that, but I got my cells before the server rack price dropped. I spent a year watching vids and finding a seller (https://diysolarforum.com/posts/433989/ Shenzen Luyuan Technology Co. LTD...

First off, my needs are microscopic. I use around 1 kwh, and no more than 2 kwh per day. I can generate 1.3 kwh per hour, and 4 kwh per day, on a good day. That being said, I recently bought 16 lifepo 280ah cells from China, planning to resell half of them. I couldn't bring myself to do that...