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Just an FYI post in case someone wants or needs to know in the future. We got a 40 gallon AO Smith heat pump water heater. It speaks modbus but I haven't dug in to it yet. I replaced the 4400w water heater elements with 1500watt elements so that even when they run it won't significantly load...

My dad was forever mad at me for losing his tools. about 10 years after I'd moved out of the house, I was riding in the back of their car... dad had an epiphany.. he was still missing tools and I hadn't been home in 10 years. He looked at my mother.... a light bulb went on in his head. lol

My neighbor and his wife are mid-late 20’s. He’s working in process control at a paper mill, programs eps32 projects, does solar with me, flies fixed wing and helicopters and is a tig welder. Handy guy to have around. Not the normal 20-something.

Daughter wants to move back from the big city and wants a tiny house. We've identified a spot near a pond that is about 1000' from our house. I want to run her 16x40' house with 6000xp inverter but it will require load management. I will swap her water heater elements for 1500w elements and...

Yes, people are that silly. Usualy the result of not having a father figure in the house. Single moms usually call a plumber or sparky to fix things and sons don't learn a thing.

I have read the threads here about how to turn on the Daly 16s 250amp by connecting P- to B- while a charger is connected. It all seems rather hokey. So if you didn't know you needed to get the LIGHT BOARD/ POWER SWITCH, here's how to do it... You need an 8 pin JST PH 2mm spacing female plug...

Daly would only balance while it was charging. At rest it would cease balance. Made it kinda useless to me. JK BMS SoC in older versions is impossible to set to 100% until one cell reaches the OVP setting, but recent firmware changes have solved this. JK every time.

Just posting this to help some one in the future. Well, Hello future person! Here's what you need to know! If your SMA Sunny BOY throws error code 6803 or 6805 you will think there's a malfunction. But that PV input will still work. You can clear the error by going to...

I can’t make propane at home. Sunshine is just falling from the sky. I’ll make the heat elements 1500w so they only use 25% of my inverter capacity.

I'm kinda old fashioned... I may just document it here.... At anyrate, I have received a12v SSR from ebay ( https://www.ebay.com/itm/322209858572 ). I think I will attach it to 12v discharge port on the DCC. The output side of the relay can be connected in series to the contacts on the DCC's...

Hey I just read your oringial post again... those growatt inverters are not for the US market. They have a ground neutral bond on one end, not correct for split phase. I think there's a screw in the chassis that needs to be removed. Check will prowse youtube for that screw. It was all the...

I have written Jason at Chargery and suggested that if they could pulse (duty cycle) the 12v input to the DCC, maybe they could accomplish the same result as the soft start when turning the DCC on. No response for that suggestion. At this time I'm considering wiring the on/off switch on hte...

yes, fibergalss batting. 6" thick walls. The standard here in my area is 2x4 walls and R13.... going above that. Also 2x6 24"on center gives less thermal bridging.

I made some brackets. They are on thingiverse.

I just misread your post. You are going from 8s1p 24v system to 8s2p system. The watt hours and amp hours will need to be adjusted. Make sure you tie each pair of batteries together in parallel. Then connect the 8 pairs you have in series to make a 24v battery. Do NOT connect 8cells in...

When I was a kid radio shack was the place to get the things I needed. But in the late 90’s they started emphasizing cell phones over electronic components. I remember trying to substitute a transistor in the store for one they used to carry and listening to the salesman showing some woman all...

I’d like to take a moment to elaborate a little for you. I love analogies. You know when you fill up the gas tank in your car and you pump 10-15 gallons into the tank and suddenly the last little bit fills up the tank and the filler neck? These LFP batteries a like that. You can dump current...

I mounted my voltage sensing wires in the center of each buss bar. Of course the first and last cells have wires right on the battery terminal. What I didn't want was the voltage drop on the bus bar being attributed to a given cell... so I split the difference between the cells by putting the...

I too have considered this. I've elected to accept that a disconnected battery will not reconnect. it will take manual intervention. Here's another issue... let's say I have a battery that disconnects itself. When should it reconnect itself? In my case, I've got three 280ah packs and I...

I can't think of any downside to oversizing LFP. Shallower depth of discharge means they'll last longer.

AO smith was available at my local Lowes.... sorry, not much more thought than that!

Someone please delete my above post... I can't edit due to 400 minute limit and some changes need made.... Thanks for all the tips.... I think it is solved. Two things I noted... my differential cell voltage was 20mv, and it is VERY likely that during charging with the behavior of the...

I would love to say something snarky like I read the 16s bms manual completely... but I think I did and I don't remember seeing that in there... never the less... there it is.... cool and thank you. :p

If you have any info on that port (ie modbus registers), I'd love to know. My understanding is that it has top and bottom tank temp, outlet temp and inlet temp. It would be really nice to roll this up into HomeAssistant and trend water useage or to command the unit on/off... not that I need to...

Where is neutral to ground bond? When you say autoformer , it's job is to nudge the neutral around so it stays centered between the two 120v hots. If you had only a small load on one leg and a heavy load on the other 120v leg (unblanced), then the autoformer would be moving the neutral around...

I ran into this problem testing the RSD modules... no setting on my Suny island would wake up the tigo modules. Later someone (maybe you??) suggested there was a min number of panels to get things kicked off. the 5v on the input makes sense now.... I would have had to put 9 panels in my test...

Maybe I can work toward that in future. It would be very cool to have a wifi dongle based on esp32 that would spew data into a Mqtt server.

Ha! I think the rule of thumb is to estimate the cost of materials and the. Double it. And then double it again. lol. Hmmm do I have my terminology flipped? I though a heating climate was where it tended to be above 70F 20C....

Also note the usage for those 3 days was half of my usage for the preceding 30 days.

For the structure of the house, we started shopping storage buildings. Found most 16x40's are selling for $16k. I found a local builder who will build a portable building on your property in one day. He's said he'll swap to 2x6 on 24" center walls for me and mylar OSB for the roof...