Most reacted posts

I should have looked at that TINY picture in the manual closer... it actually wants a 17th wire AND the positive wire both on battery #16 positive terminal. Soon as I hooked up that extra wire, it's working perfectly. Except for that bouncing voltage, it seems like it was basically working so...

I paid $2100 shipped for the 8K Deye. But I don't think I'm getting a warranty. Rolling the dice. I like the integrated battery/charging and time-of-use configuration/intelligence.

Here's a study about LifePo4 charge/discharge effects from temp.. but the study was from -40c to 20c !! :oops: warmer is better. https://www.researchgate.net/figure/Profiles-of-tapering-current-vs-constant-voltage-charging-time-at-20-0-20-and-40_fig1_256696563...

Make a mold in some sand, put a plastic saran wrap, then pour in a little clear epoxy for a perfect fit spacer...

Here are two of their ads, both for Linshen at same price $75.20, but one lists 272ah nominal voltage, and the other 280ah nominal voltage. https://www.alibaba.com/product-detail/3-2V-280Ah-Batteries-Cell-prismatic_62556226025.html...

Not sure how accurate they are, but pressure pads are available with up to 22lbs force measurements. I may order it and try it. What im asking is, if 4 cells were stacked and clamped at say 12psi across the surface of the top cell, would every cell in the stack experience that same 12psi...

The feature list says it will let you know if you don't have all the wires correct. It should have easily been able to tell #17 wasn't connected to anything. This looks like a software bug. So close!

I read on another forum there was a bad board on arrival. $2K was with shipping and DDP.

Yes! I think that's it! thank you!

Vendor wanted me to swap out the #16 battery.. I'll just wire up another harness on a 2nd battery pack and see what happens. With such a large discrepancy in voltage, ignoring the bouncing, I don't see how it could be both my Seplos and voltmeter are both wrong and not sensitive enough to rapid...

https://byjus.com/physics/ceramic-capacitor/

Just getting started in designing my system, but ran into this while investigating options. Getting a few quotes from EnergySage to compare, and one of them said they use this: https://www.energysage.com/solar-inverters/hoymiles-converter-technology-co-ltd/4605/mi-1200-extended-warranty/...

Also, with Aluminum, I would be worried about having conductive material raised up above terminals. I'm thinking using Poplar instead may help spread load a little over a slightly uneven surface since it will give a little on the high spots and it's not conductive for a little extra safety...

59.3 grid low Voltage out 120/240 I did another test today and set TOU at 57v min,l and it worked, so that wasn't the problem. At one point yesterday, I fat fingered 560v instead of 56v. The UI gave me an error and I thought I fixed it, but perhaps that caused a DC bus shutdown, but reboots...

Basen said their EVE and Lishen are both the same A5 grade and not A1. She still did not say what it meant exactly. I asked if these should retain 80% after 2000-2500 cycles in normal usage. I was just fishing for more potential info on this A5 label. She only said that 2000-2500 cycles should...

I've found the Deye/US version available, shipped, for $2K on Alibaba. However, they state neither they nor Deye will provide warranty support. https://www.alibaba.com/product-detail/DEYE-Solar-Hybrid-Inverter-Home-Use_1600142152694.html?spm=a2700.12243863.0.0.6e663e5f7ULu0f I assume that also...

This needs to be mounted in my garage which doesn't have A/C and we get outside temps up to 105 in the summer. I'll never be charging at that time however. Is discharging ok during higher temps?

I'm trying to install NEEY 4a 4th-gen balancer. The #16 cell voltage is bouncing around a lot (+-20mv) and all 30-40mv below actual voltage. The Seplos BMS records normal/stable voltage as does voltmeter. I checked voltage at box/harness end and voltage also seems correct/stable and matches...

Your example here is for a SINGLE CELL SAMPLE.. that's why the price is so high. If you want regular price... order a minimum quantity of 4. Note the "Samples" in the upper left corner and MOQ of 1.

Great info.. just getting ready to order my batteries for my yet designed system :) Couple thoughts reading through this.. I've read people have fans running over their inverters, etc... does anybody have a fan running over their batteries? I see compressing the batteries between large...

My batteries are brand new and over first week of operation the soc/voltage is changing daily. It's now to 51V=2% it started around 49V=6% I'm not hitting 100% so maybe it's learning incorrectly.

This looks like the hub. https://signaturesolar.com/EG4-LiFePOWER4-Communications-Hub

I was working on a new battery pack today and messing with charge voltages to attempt top charge with close to balanced batteries. At one point I switched back to old bank to work on new one in isolation. Awhile later, I see switched back. I did this by throwing breaker on each bank. The...

I'm trying to get a formal solar design done for my system I'm building so my city can approve it. But, the engineering firm is saying that while they see the manual lists UL1741, they don't see the actual UL certification? The are indicating they can't approve use of this in the design...

How about some small hollow copper tubing.. every inch or so, and pour some sort of epoxy/urethane to create a diy 'venting' compression spacer. I'll be running these in my garage that can get hot in the Texas summers. I wonder if clamping them, yet providing some air-flow will make more of a...

Ah, I didn't see that.. Unlike your bright, white letters, mine are just slightly burned (pressed?) in, smaller, black, and very, very hard to see. Several of the numbers didn't even show up around B11/12. In any case, a more careful look at the wiring in the manual would have been helpful...

That spec indicates... "It can be seen from the above table, that the compression force of the battery cannot exceed 50 kN, otherwise the battery may be damaged." A 50kN force is equal to just 7.25PSI - The target PSI I've read on these batteries is 12PSI-15PSI?

It's a quote from the eve280k spec posted above. I guess the assumption of 50kn/m2 but no other denominator makes sense.

I'm using voltage mode on the batteries right now. EG4-LL on the two existing and the new is a build with EVE 280ah and JBD bms. The batteries seem to be working fine, I just can't figure out why the MPPT isn't pulling power from the panels. Grid and load all appears fine as well. It should...

Yes batteries are charged. But I've run this inverter without any batteries before as well. Regardless of batteries, wouldn't it pull power and sell excess? I have sell enabled. The charge % was off earlier, which seems odd because I thought it used volts to estimate rather than amp...

You can see it was working fine, then all of a sudden it dropped to near zero. I also tried rebooting the tigos but didn't help.

Sorry, didn't see notification on this thread. The link I posted earlier is for the US version. From the seller.. they also sent a picture, which you can barely see if you zoom in on the model number.

Interesting, I know I've read that bus-bars should be basically the same length, but with some, i.e. EVE LifePO4 I just ordered, it will not be possible. Connecting on long side vs the short is different by several mm. Perhaps this is mitigated by the BMS?

I'm in McKinney TX and wanted to build my own tracker mount. City said no, needs to be UL listed and must be certifieed up to 115mph wind. This looks like the opposite extreeme.

No, $2100 was with DDP shipping included.

I'm trying to recall if I read somewhere in these 24 pages... Doesn't the springs have to divide the pressure by the number of cells clamped together? At this point, I'm wondering if just making it snug at 50% and assume expansion to 100% will provide the remaining pressure? 400Lbs of pressure...

https://www.amazon.com/Electrically-Conductive-Adhesive-Temperature-AA-DUCT/dp/B00EPYCIGQ Conductive epoxy may be a quick option to attach a stud. (Comments indicate you need to heat it to cure, so take that into consideration on the battery)

I've exchange 1 chat with Basen. They have SEVERAL listings for their batteries and many appear to be near exact duplicates. I'm not sure this is a tactic to simply fill up search result screens with more of their listings than a competitor, but I don't personally like it. However, they have...

Ok, I had battery set to a high voltage in TOU menu to force an equalization. Once I dropped it back down again, it started pulling both battery power and solar power. Perhaps having a really high voltage value in TOU menu caused this issue. I may experiment more later, but its working for now.

I was trying for 3.56v per cell for a top balance, so you are correct I guess it wasn't equalization. I was using the individual cell resister and charge approach to get them close quickly. Seemed to actually work since I think they were somewhat close from factory.

I have a Deye 8K (basically a Sol-Ark) along with 10 Enphase micros connected directly to the same sub-panel box with line-taps to meter line input. It works perfectly fine with excess power in any direction. If there is excess Enphase that Deye doesn't need, it will push into the grid. I ran...

Deye recently updated the app and I can no longer do a read using remote control. Anybody know the solution for this?

Are these new EVE? Are you having issues with them? I'm about to order some, but Basen just said they are GradeA-5 not A-1?? I'm waiting to see what that means exactly. Lishens would be around $100 cheaper, but I thought EVEs were better.

Basen said the Lishen are normally 272ah, but a 'good matched' set will deliver 280ah. The EVE are 280ah normally. I'm guessing better quality/standards, but who knows. Specs even put the Lishen's 3mm or so taller. I'll post what they say about the grades.

I ordered this page 8K. https://www.alibaba.com/product-detail/DEYE-Solar-Hybrid-Inverter-Home-Use_1600142152694.html?spm=a2756.order-detail-ta-ta-b.0.0.43832fc2bw09ka Actually just a couple weeks ago, so haven't got it yet. Rosen Solar actually had it available for $200 more air shipped...