Search results

They are still taking charge and will do so until they are all at a matching voltage more or less. It's never perfect. The reason they are taking such low amperage is the internal resistance of the cells within the packs. One thing you can do is to increase the absorb time when charging and...

REALLY ? That's news to me, and we have as much BDDY as TSLA and of course I keep an eagle eye on those shares & companies. Sorry to say but BYD has a good safety record with batteries and their Raod Safety Testing surpasses even European standards.

There is a significant different in the eyes of Duties Import/Exports. The "Made In ??? or the Assembled In ??? is handled quite differently. The finer points are only known to those that deal with that directly. What effects to Canadians... If coming here directly by boat/plane or if...

It takes time. as the packs reach the set point voltage and the cells level up the Voltage will remain same but the Current will drop. When you have multiple packs in lay like this, they will slowly flip on/off (so it will appear) as it continues but they start taking charge as all packs...

What exactly will happen & when it will be implemented at this point is just SPECULATION right now. It will all be released on May 21st (next Tuesday). Given the timing of the Announcement of this and when an "Official" release will be, is curious. Shock up front and less in reality ? see...

One side effect will be the "components" segment which is chips, processors and such. Products that are "Assembled In *******" use parts from Global Sources including China... Guess what, most electronics have some parts from China within. Full Details will become available May 21st, then a...

The latest information on Credible News Sites is that on May 21, Tuesday, the official details will be released. YES, Battery Cells, Solar Tech (Panels & related hardware) will all get Massive Duty increases, up to 100% on several items. This WILL have severe effects on US Companies using...

Cell deviations always appear after 3.400Vpc and with a deviation of 0.030 @ 3.500 is still in chuckle worthy territory as it's insignificant.... now 0.100 out is cause for an eyebrow raise & closer look. The main reason a lot of folks have issues with battery packs & balancing is 95% of the...

It certainly seems to be the end of Cheap Cells & Tech from China for the US. What & How others will react & the fallout effect we DIY types will likely be unpleasant. The other shoe to drop, is what will China do to counter it... and what will that cost us poor shmucks too ? When & How bad...

I went from FLA to LFP - yup lots to unlearn, shit loads more to learn too. Ohhh the "Subtleties" are enough to make one cuckoo during the relearn process.

Have a browse @ Midnite, their E-Panels do Magnum, SMA, Schneider, Victron ... https://www.midnitesolar.com/products.php?menuItem=products&productCat_ID=4

The A-Typical setup inside a "Rack" type case, is that when installed, the cell terminals & vents are on top and under limited compression. We have seen circumstances where cells on their sides have leaked and caused issues resulting in failures, a few resulting in fires. The electrolytes are...

You can easily put Float to 55.0V and get the full use of the working range charged & topped. I found the "Sweet Spot" for the active balancing to start @ 3.4 so it can do it's work while in float. BUt by the time my packs reach float, there isn't that much difference usually.

Nice & Tidy but with a gotcha... The cells inside those rack mountable are now sideways and that is NOT good. I seriously suggest you get them OFF the ground and on a shelf, even stack them one on top the other (use small rubber gripper feet or pad to keep them from sliding) and you'll be...

Once the entire bank get's "settled" and working properly after a few cycles with a proper profile, they should all level up & balance out. That being said, it will NEVER be "perfect" there will always be a wee bit of deviation between packs which is normal & expected. Now that deviation...

The BMS you have is only capable of Passive Balancing which only burns off voltage from High Cells. Active Balancing actually moves power from Hi to Lo cells. Passive is also terribly slow due to the nature of it. It also appears you are Over Charging past the Working Voltage Range and...

Midnite Solar Classic controllers are accessible via Ethernet-ModBus, their software interacts with them, the Stack is OpenSource and there are alternatives to their own software. Most of Midnites products can do so...

I'm not familiar with Sola-Ark product settings. If I interpret the naming conventions correctly, it all appears correct. Although, I'm not sure how the % for Batt Low is calculated in this instance. Using your DMM, check the battery voltage at the battery pack terminals, the main dc busbars...

Per the Spec Sheet they are 16S or 51.2V Nominal. Many telecom rack batteries like PylonTech are 15S or 48.0V Nominal. These are commonly used with equipment that was designed for 48V Lead Acid batteries that cannot be programmed to take full advantage of LFP. LFP is the closest Lithium...

PACKS 2, 4, 6, 7 & 8 ARE ALL TRIPPING HVD Disconnect as they are Well Over Allowable Voltage Ranges. HARM IS BEING DONE ! Your Charge Profile is obviously WRONG and needs immediate attention ! See suggested "48V" charge profile below. ! Stop, do not replace the cables without doing the...

The wait is a test of patience ;) and a reminder of days past when the world was a bit slower and calmer too. But I'm a geezer so... The "Instant Rice Society" thing is too much for me, everything wanted "right away" and then grumble about the consequences....

Proportionate Discharge A-Typically looks like this when observed. A Bank with 100AH - discharging at 10A, 200AH at 20A and 304AH @ 30A if an Inverter is pulling a total of 60A. Using simplified numbers, this will happen though as shown with a bit of float 1 or 2 Amps between packs as it...

The 304's are NOT the same size, very close though, I believe they are a pinch taller. I used the old trick of adhesive under the metal to catch the fillings but then air compressor air blow etc too. I'm nuts about that. Had I known (lesson learned pack 1) it would have tapped it first. Amy...

KEY CRITICAL INFO ! Had I known that I would have written differently and not wasted my time. GOTO you membership profile and add the "Closest City" and Counttry for your location. We have folks from Australia to Zambia here and every powergrid/system is different on their own.

Those are really good cells. 0.01 is NOT significant but stick that inside the pack, not on the (+) or (-) take off cells. Now as a point of note: Regardless of cell grade & rating & production date, I will ALWAYS top Charge the cells in batches of 4 to 3.650 and let them go until Charge Amps...

Properly configured battery bank with Varied Capacity Packs with LFP is fine as this is one of the few chemistries that works PROPORTIONATELY relative the the AH ratings of the packs within the bank. I've explained this far too many times to repeat it again. I really wish some "folks" would...

It appears that you have ONE battery pack of 24V/280AH. That has 7,168Wh or 7.1kWh. You do not state what the Start Surge is for the Mini-Split and THAT is important ! You also do not state what it is using while running in "normal fashion" as you use it. Please try to get screen captures of...

I suspect the OP is not really appreciating that with a New Build Home, the opportunity to make the home very efficient and self-regulating passively has not been considered. The shame is, with a small effort & a small extra cost, home efficiencies can be greatly improved cuttingpower usage for...

Just chiming in here.... 1) Make sure the AIO and everything is properly grounded and correct. 2) Never "enclose" a BMS meaning don't cover/wrap it in anything, it needs air for passive cooling. They get warm when in use, warmer with higher amp draws, so it's important that they can shed that...

Yep still around but interacting far less than before and far more picky about it too... Surprised you found & revived this thread... I guess I'll get some more hating msgs again... Please download that spreadsheet and keep it for reference. Make a folder on your computer and put all the...

As others have said, it is all relative, really. How much battery one has, their solar system capacity and the equipment they run through the different hours. Most typically, one looks at their "worst / heaviest" usage periods to determine the "minimum daily energy usage" they have to cover in...

First thing. Edit your First Post & change the Title to "New build, Offgrid QLD Australia, Help required for DIY - maybe illegal ?" We have several members from Oz and they may be able to offer good advice & suggestions. Nothing beats local experiences. Especially when dealing with idiot...

I must point out that several of us run with 6 Packs up to 10 Packs in ONE BANK ! I'm one of those. When properly & correctly wired pack balancing within the bank is NOT an issue ! HONESTLY... I have 6 280AH Hot ATM, by 13:00 hours they are existing Absorb and going to Float, by that point...

For offgriders most of us use Grundfos Deep Well Pumps with Softstart so that there isn't a hard start surge which inverters dont like. I myself live offgrid, in the deep north, I use a GrundFos SQ-5 120V Softstart model. This is 240' deep in the well, to a 50 Gallon pressure tank in...

TBH you are asking for Quirks & Foibles, not to mention tempting Murphy's Laws heavily ! Seriously, get another 8 280AH cells and build a proper 48V/280AH Pack. The prices continue to drop and both V2 & V3 EVE cells are readily available. Then the next pack you build could be 304's or whatever...