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When top balancing cells in parallel, nothing much happens for a long time until a lot happens in a short time. When they hit 3.45 volts, keep an eye on them!

We experimented with hydrogen fuel cells to power off grid radio towers 20 years ago. Let’s just say they were problematic…

The biggest problem with Daly, and particularly from Aliexpress, is the high percentage of counterfeit products. I’m not saying you have a cheap knockoff, but many have used Daly products without incident. The only BMS I’ve used is the Overkill offering of the JBD product and they have been...

copper clad aluminum generally gets a bad rap because it’s often passed off as “copper wire” by less than honest vendors. But if you know what you’re working with and size accordingly, it’s perfectly capable of doing the job.

You will connect the usb where you Wi-Fi dongle is currently connected to a USB port on the Pi running SA. No converters needed, just a simple usb cable. The one provided with the inverter works fine. In the general settings tab of SA, select the Growatt and use inverter values in the battery...

I put a few good tight wraps of filament tape around the cells, followed by a wrap of Kapton. Never had any problems.

Well there ya go! https://dictionary.cambridge.org/dictionary/english/estimate Thanks for making my point.

I buy things frequently that state final shipping and taxes will be calculated at checkout. No problem. I don’t understand all the vitriol rhetoric. You didn’t like the final price and chose not to complete the purchase. The shopping cart is not a promise of a final price, it’s just an...

What about the thermal damage to the boards? Somebody might kluge it but it wouldn’t be reliable.

More money than brains...

That board is toast

I did a google search on his battery model after I posted and realised it might not be LFP. Corrected post.

Having your Bulk and Float voltages the same has been known to cause problems. Edit: I deleted my comment on recommended voltages, unsure if your battery is LFP or LIO.

Does anyone have a copy of Build 2023-08-16 lurking on their hard drive you could send me? I did the last update thinking I would just reinstall the last stable version if I didn't work out, I thought for sure I had saved it on my computer but apparently did not. After many emails with Duane...

Does anyone have a copy of Build 2023-08-16 lurking on their hard drive you could send me? I thought for sure I had saved it on my computer but apparently did not. After many emails with Duane at SA, they refuse to provide a copy and can't understand why I'm dissatisfied with the new stable build.

Same here. I use the grid tie system to save money and the off grid system in place of a generator for outages. 73, de n3bv

Not to mention the countless times I went back and forth between the equipment shelter and the truck looking for that wrench or screwdriver I stuck in my pocket 20 minutes ago so I wouldn’t misplace it!

And not to mention Magnum’s Art Deco design! Toss in some big beautiful analog meters and I’m in love!

And keep in mind that since it’s an off grid system, you’ll forget all about that missed tax credit when there’s a long term power outage! A storm came through here about 4 hours ago and there are widespread power outages. While all my neighbors are in the dark and without water, (we all have...

The lower capacity seems too consistent among that many cells. The highest is 246.0 and the lowest is 237.2. That’s a 8.8 Ah spread and the other six cells are in there. So they only differ by just a little over 3% assuming 280 Ah cells. One or two cells, yeah…maybe. But all eight, too close...

No, you’re doing it the right way. It will take a while, my 16 cell 230 ah packs generally take most of 2 weeks. Nothing seems to happen for a long time, then you reach a point where a lot happens very quickly!

I had the pellet stove on one night last week. Can’t remember which day, but I hope we’re done for the season. It was a mild winter here in south central Pennsylvania, only used about a ton of pellets. Been trying to use the heat pump more and the pellet stove less since I can make my own...

The generators and trailers have some residual value. Batteries are worth scrap price for lead. The solar panels might fetch $50 each on Craigslist. The rest is obsolete and basically worthless. They were a good build 15 years ago.

If your BMS can only provide 60 amps at 12 volts, it’s suitable for at most, a 750 watt inverter.

You have to carry a high enough tax liability to take a tax credit against it. The notion that you can spend a certain amount on solar and get a third of it back as a refund is a common misconception.

I appreciate the desire to turn a quick profit but so far you’ve presented a bunch of “stuff” without a description, working condition, or price.

The lowest $ per kWh is still the DIY battery using prismatic cells.

Maybe you ought to lay off the tequila for a while there Mo

A quick story of a recent experience I had. Not active on HF but had a terrible spur on a local GMRS repeater at 462.625 mhz. It went away when the sun set so I started going all over the two solar power systems I have here. Through a process of elimination, nothing I de energised helped...

Love the repurposed satellite dish mount!

I hesitantly upgraded to the latest 2024-04-05 stable build. The automations might prove to be useful, provided I can figure out how to configure the settings. A little explanation on the SA website on how these thing work would be nice. In the last build, switching between Grid Bypass and...

I live just a few miles from Three Mile Island, and look over at the remaining cooling towers every time I cross the Susquehanna River. We came very close but learned a lot. Even with the technology and blissful ignorance in place at the time, and a little luck, disaster was avoided...

Thank you Tim. I thought I had it right but a few recent discussions around here had me second guessing myself.

What about in a transfer switch? In my setup using a Growatt SPF 12k which has in internal autotransformer, the grid input has two legs, connected to L1 and L2. The unit has one neutral which I have tied to a common neutral in the sub panel according to Ian’s diagrams on Watts 247. I have a...

My house is full of these lamps. I have a friend who claims to be extremely sensitive to LED flicker. When I told her she was not only sitting in a room lighted with LEDs, but being powered by batteries and an inverter, she didn’t believe me. I had to remove one from a lamp and show her.