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One thing that caught my eye. He used LED Strip lights which have colour capabilities. Wouldn't it be cool if there was a way that a BMS could send a signal that changed the LED colour if there was an error or fault of some sort. White for good, yellow for warning & red for "Oh Shit something...

WOWZERS, some of the stuff posted in this thread is Gobsmacking - a Few dingalings have popped their heads up for target practice. A few comments made really help to alert WHO to completely ignore & place in the Ignore/Block list. I miss the good old days when this forum first got going...

I watched the Video, everything there is really well done and I see no issues of any sort. This is inside in a temperature controlled environment so that eliminates several possible issues. The cells are bound enough to prevent any stress on terminals from the small amount of expansion &...

I had a situation with my old ford recently and had to change out a cable and silly me, rushed down to the local UAP/NAPA and got one off the rack, I checked the crimps and just before I was about to add my own heat-shrink on the ends (they had none) I noticed the wire looked odd ! I decided to...

Spotted a GOTCHA ! You have Active Balancing running when the cells are in the middle of the Voltage Curve. Lessons Learned dept, that does not do any good and actually causes other side effect issues. Back in the day, I started with QNBBM Active Balancing, then tried the Heltecs for...

WOW ! To go through all that to provide power to the grid ? That setup could likely power your house with batteries & zilch grid usage. Now your deep into the Rabbit Warren of hooey with power co & town...

I don't think this is that nefarious. If you use grid power - the CoOp will be the sole provider and that you agree to purchase that power from them according the rates/tarrifs that apply to the company. The limit is a CAP for what that they can/will only provide for a Commercial...

For me, JK has been good & solid and the new Inverter Edition BMS' answers several needs & wants beyond the previous versions. They are flash updateable to stay current (many are not) and they are being enhanced & updated regularly. I have been using JK 150A & 200A BMS' for quite some time...

Once a Cell reaches cutoff voltage (set in BMS), the BMS will set to 0% SOC and shutoff Discharge. Depending on what is set for Power Down Voltage it may completely shutoff, this is correct behaviour for the BMS. If not powered down, it should still have Charge Enabled. Cell 12 appears to be...

OK, just to be clear. You want to use a 16S Case, but configure the cells into a 2p8s for a 24V/560AH battery pack, with a Max output of 300A. 300A Continuous or just for surge handling ? Yes, you can use a 16S Case and setup the cells in 2P8S but the Cross BusBar will have to be sorted. You...

Honestly, series connections to make 24V or even 48V is NOT the best way to go, it presents MANY complications & potentials for drastic things. It is FAR BETTER to stay Native meaning for 24V system use 24V Battery Packs. Kludging & bodging together stuff "always" complicates unnecessarily and...

I would be helpful if you could screen capture that pack when it is charging & reaching "full" and things are tripping & being logged. Pack 1, Cell 15, also has a higher resistance, might wanna check that & verify it's good & tight. Your pics do not show cells 8 & 16 but you have a couple of...

The house burning down due to a fuse failure can happen with ANY Battery Chemistry regardless of voltage as well. Quality Breakers & Fuses rated for " the purpose" they are being used for with proper & correct mounting is essential towards building a safe system. A great deal of people are...

If they are not Pure Copper they are good Orange Brass at least, Now I am checking the resistance through the terminal, which is 0.38 mOhm. Brass is extremely recycled, every recycle makes it lighter/whiter, the more orange it is the more copper within it. Pure Clean Brass is fine but recycled...

The Single Terminals are plated copper, M8 Bolt, dimensions are 35mm X 35mm, cover dimensions are 108mm X 90mm.

The "optimal" method is a big more difficult but the end result is best and will provide little to no issues going forward. 1) Take apart the 2 24V/150AH batteries and put the 16 cells into a 48V config. There are cases available to handle that & more. 2) Get a Compatible SmartBMS, I am...

When you buy cells, they've been shipped to vendors after the factories perform their validation tests and put them into storage, usually at 3.2V. These can sit in warehouses for months, even years before they get to sale. We are still seeing people get shipped cells made in 2019. Think B &...

Simplicity. 12V batteries, most common busbar being 4 bolt... rackmounts often use long strip busbars and many other formats out there. All depends on application and the requirements.

1) It's a labour holiday over there May-01-05. 2) The time difference is a bugger too. 08:30 here = 20:30 there (I'm in EST) I found the fastest response is via the Alibaba Messenger App in general.

Yes, they are continually improving the firmware / software & adding the protocol stacks for other inverters. Not finished ? Sure but now far more mature that 5 months ago and improving. I bought them because they can be Flash Upgraded (not that many BMS' allow for that) to stay up to date &...

The most common DIY setup is Cells with Smart-BMS in a "box" which then goes to Fuse to busbar to switch to AIO./Inverter/Charger. Most use Class-T fuses but some of us also use MRBF (12/24V) or MegaFuse (Victron uses these too). Those who use Steel Cases most often get those with DC Breakers...

I'm near Algonquin Park Ontario Canada.. I know snowloads... also how snow & ice can stick to your panels and how those spaces create anchors for the crap to stay there... plus my panels are set to 45 degrees... I'm resetting my arrays and going to 50 Degrees, I'll loose a bit of summer...

There are several "Gaskets" made from hi-temp neoprene-silicone that go between the panels to seal/close the gaps while allowing for any small movement. These can be used to make a waterproof array and due to the silicone, no moisture (rain/snow/ice) will stick allowing it to easily slide off...

Over the years I've built a few batteries. I take them in sets of 4, set them in parallel and charge the cells starting @ 40A to a max of 3.65V and allow the CC/CV Charger (bench unit) to fully saturate the cells down to the point where tehyare taking 3A only. I set those aside, leaving them...

OK a bit to unpack: 1) Never Ever mix different Chemistries into a parallel bank. Use ONLY the Same Chemistry. LFP exists in prismatic, pouch & cylindrical formats. 2) Age is NOT a major concern (unlike Lead Acid & Variants). Each Battery Pack is "Independant" with its own BMS. 3) You CAN mix...

I've started to use the mesh ones with my older cells that I am transferring and they are really quite good. Their resistance is also only 0.12mOhm which is as good as the winner pure copper bubars most provide. Unfortunately I could not get ones long enough to use for the X-Bar across the two...

I think you also hit on a GOTCHA that many trip over... is when to "fix / bind" the cells. The fine print (several makers) indicates to bind the cells at 50% SOC / 3.200VPC collectively. Not when 100% or 25% SOC and if you measure the cells with a digital caliper when at 25%, 50% & 100% it...

I have Midnite Classics I can access via NodeRed & Other SW. Intended to plugin my battery packs & more into that setup. The Inverter BMS has features & functions that I wanted & suggested after I edited their manuals & using their previous BMS. (love how some took credit for the work of...

I am in process of doing another batch of battery packs. 24V/280AH/8S Steel Cases with JK Inverter BMS'. The kit comes with the Fiberglass FR4 separator sheets for the bottom, back, sides & front + a large sheet to over the underside of the case top over the cells. Link to cases I am using...

As far as I know, Cells with Tapped holes are pretty much impossible to find, I had to replace one such and I had my supplier search Hi & Lo without luck. You can still use a cell with a Welded Post without issue. If using a Solid Busbar you will need to add a Step ___/---- into it to...

I'm heaving 8S 280's about and SHEESH - I've come to LOVE MY DOLLY !

I might suggest you look at this thread where a really good portable system was built with a lot of thought & problems/quirks solved. It's a really well done portable setup with Good Oooommph. https://diysolarforum.com/threads/portable-victron-power-station-operational.73130/

I'm sure she'd be happy to send them along at $99 a cell... BUT if it is a Free/Discounted Offer for a Full & Proper review without bias or prejudice I'll take 8 pcs. Pssstttt keep in mind that the 500+AH cells are due out in Q3 from Eve. Imagine heaving a 16S of those puppies... Oi...

RULE #1 ! NEVER BUY ANYTHING TILL YOU HAVE A PLAN !!! Sounds like everything you intend to run is 120V. I strongly suggest you get yourself a Kill-A-Watt meter you can plug our devices into to measure how many amps/watts you are pulling. See here...

MOST IMPORTANT ! BUY NOTHING TILL YOU HAVE A PLAN !!! 1) 240VAC/20A = Minimum of 4800W, and we always Round Up so say 5000W "at least" but remember there is a BIG Surge when you hit the trigger and that can be up to 3X or 15,000W. It does depend on type of Welder but they are not designed...