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no, actually those are for the thermistors that are built into the packs. once I pulled out the built in bms, I kept the thermistor leads in case I ever wanted to use them in the future. at the time, I was way more concerned with temperature than I am now. so much of the worry out there with...

the ground isn't really meant to carry current for any length of time, it's fine to use a smaller conductor for the job. for instance, I run 240v AC about 100' to my house from my inverter, for that I use 4/0 wire as the conductors. the ground, however, is only 6awg. it just needs to be large...

I have three of the six batteries online at the moment. Because the house loads are more "gentle" than their previous jobs, the batteries are doing much better than expected. Things I have learned: When I bought them, they were being sold as ~2.2kwh, per unit. I'm seeing about 2.6kwh per due...

I don't even pretend to know what it all means, but we had an engineering firm spec everything and wet-stamp the plans. they insisted that it was over-spec'd for the area and conditions. they were more concerned with the wind-loading on the long sides, actually, since the building is long and...

three 5" x 18" LVL for the ridge beam, supported by two posts, consisting of 5" x 9" LVL. those transmit the downforce to the floor, supported by a gigantic 28" x 16" LVL beam that runs the full 24' span.

mid-coast Maine, ~46°N

The SIP panels that make up our roof are 12-1/4" thick. The EPS foam that cores the panels makes for some pretty good noise insulation. Our roofing goes up this coming Tuesday, but we've had some hard rain in the week since the panels have gone up. I went out to listen to the noise, and TBH...

awesome advice! we just received our standing seam roof (24ga) yesterday, and it's due to be installed next week. what would you recommend for fastening the rail to the roof seam?

I'd second this as an economical choice. use the factory oil for the first thirty minutes, and then switch to a high-quality synthetic -- it's worth the $8. I've run mine daily for ~2h (to charge the batteries in my worksite tent, using a 24v multiplus) for the last 8 months and it's super rare...

That's actually pretty doable. I'm playing around with pulling the data from multiple Daly's over the BLE (different packs, wired in parallel) and collating that to send to my victron quattro. Doing the same for PylonTech-speak shouldn't be all that difficult, and would still work with my...

tryb try accessing the bms with another phone. you'll see that the password doesn't matter. the physical bms has no concept of a password, it's just some weird thing they did in the app.

yep. it's due for an update -- been busy building a house. here it is.

Ah. I do remember reading this! (thanks for the link, btw.) I don't think it's going to be much of a factor, because my system isn't ever grid-tied, and my inverter is grid-forming -- basically, you can't rely on an inverter to reliably use frequency shifting if it can't completely control the...

I'm about a month away from having the full array up on the roof. That said, I have setup a small test system with three panels and have had great success with that so far using just the frequency-shifting. I was planning to setup one of the quattro's relays to control an AC dump load and to...

My situation is, well, a little weird. We bought a 100+ acre chunk of raw forest, that had as it’s only existing infrastructure a stubby stretch of 150’ of driveway. If we were retrofitting batteries into a place that already had some existing buildings, amenities and such, I’m pretty sure that...

The Victron units can be configured to do power limiting by frequency shifting, when offgrid. I use this feature on mine.

Scrap the ac-battery, and setup three Victron multiplus-ii's (or quattros if you want more inverter/charger capacity), which can work together to produce three-phase power, are designed to be grid-forming, and can easily be wired / configured for proper islanding in grid down. Then, hook up as...

My understanding is that the 4-cell models are a.completely different thing, maybe from an acquisition or something. They're not the same underlying tech.

I know, right? ;) Interesting... I’ll be running these with enphase microinverters, so I wonder if that negates the issue to a degree? This is a dead link for me. :(

I paid ~$135/ea (incl. shipping) for two pallets of Hyundai HiAS370HI panels, 54 in total. I bought them off a seller on ebay, no troubles, beautiful panels. I had a little problem with the shipping company (UPS freight), who misrouted the panels, but once that was sorted out...

Also, the inverter that I'm using is rated to 66v, so using 16s not only fills out the box nicely, but allows me to run at a slightly higher voltage (which decreases resistive losses and cuts the amps that I'd push over the wire by ~9% for the same amount of power.) Alternatively, I could have...

Each rack battery module contains 14 cells, in a 14S string. I took them apart and reorganized them as 7p2s. I then I took 8 of those reconfigured rack modules to make a very large 7p16s battery. I'm very sure they have. I tested a large fraction of the units and they seem to fall between...

Pictures! So, after a dry-spell of posting — some progress photos! I used the big bobcat to clear our building lot and had to spend quite a bit of time building out our driveway. Two culverts, some mistakes and 350y³ (~276m³) of 4” (~10cm) road base later... We can now get a fully-loaded...

There is no concept of a password in the BMS itself. If I have physical access to it, I can plug into a port and change whatever I want. The "password" feature of the mobile app is entirely internal to that app -- it's basically just the app asking, "are you sure?" in a convoluted way.

I think I'll probably just bolt them to the concrete pad I'm going to pour. They weigh ~1000lbs each, so you're not going to move them without heavy equipment.

No worries. An idea just isn't good unless it can survive having someone punch holes in it. Yeah, I don't think it's worth the money... Or the wait, in the case of the IQ8. Victron makes solid toys, for sure. They're more expensive than the Chinese inverters that seem to be all the rage, but...

You make a solid point. This experiment was purely a PoC. I was looking at the numbers coming off the Victron Inverter, through the BT dongle and Victron Connect. I was giddy enough that it all worked together at alI and didn't investigate any further.... and nothing has been calibrated at this...

Yeah. I can't see how you'd do both at the same time. I'm 97% sure that the BT cable just proxies whatever it gets, and doesn't do anything at all smart. The connector to the immediate right of the UART/BT connector in your picture is the rs485/can connector on my model...

On the UART cable, there are only three pins used: (using the colors from the picture) red, white and black. The red and white wires are the serial rx/tx and the black is a ground. The bluetooth cable adds an additional wire, the green (again, from the picture above). My suspicion is that is vcc...

For the love of all that is holy, please apply heat shrink to those lugs. It only takes a few minutes to do, and you'd go from a 9 to a 10. It makes my eye twitch. ;)

post a picture?

UPDATE: I was able to execute my IQ7+ / Quattro tests today.

Okay, here's what I tested today: Experiment-1: Setup: A Victron 15k/230/200 that I set to 240v/60Hz single phase. I connected it's Output-1 directly to the L1-L2 of an Enphase IQ Combiner. I placed one 20-amp breaker on the combiner, and wired that directly to the red/black of a Q-cable...

I've had good results talking directly to the Daly over it's UART port. I've done some digging and have started to document some of the commands that control / query it's configuration.

I haven't tried to get anything off the can bus, but I've been very successful at reading data off it's UART port. Maybe give that a go, first?