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A noble idea but honestly not a practical one. Just because you got a free box of nails doesn't mean it's a good idea to build a house :)

I have 560Ah (8x 280's) and with 150A BMS' my cost shipped to Canada was 1125$US which is <17c/wH for the components. I used what I had for the wiring & boxes but even so that might have added 50$ if I had to buy it. I'm retired so my time is free :)

Just found this thread. I'm running a Pi4/SSD with Telegraf/Influx/Grafafana to monitor my system in a fifth wheel trailer. I collect data from two JBD BMS units w/ESP32's, a Rover 40A via USB, an 8266 w/GPS & accelerometer and an 8266 w/DHT22. I display in a browser, on my phone or on a Pi3...

I have a pair of Heltec 4s boards but haven't used them. My 2 4s 280Ah packs have stayed pretty well balanced. They will drift apart slightly during charge but then settle back to a few mV range difference lowest to highest. I have my cell ov @ 3.65, under @ 2.75 and the MPPT is set to stop @...

A dumb FLA charger will likely max at 13.8v or so. Not enough to get the LFP to full charge but good for what you need. I don't charge my LFP batteries to the full 14.2V with my solar setup on TH RV

Good to know it's not just me :) Even if I switch display modes there's still the black hole on the right. Working on a Pi w/touchscreen now for a kiosk display in the trailer

Yes, the struggles for Internet were amusing. I got the BC part from the video description: "Linus' parents are building a sweet new off-the-grid cabin miles offshore of the mainland here in British Columbia, and while they've figured out power, sewage, and water, they left one thing for me...

I used to use UDP broadcasts for my old system (in an RV) but switched to MQTT at the source. I have an ESP32 on each BMS and it publishes MQTT which is picked up by a Pi4. I figure the ESP32 is the cheapest way to do a wireless connection

I would think that would require a fair bit of tq on the lug screw considering what it takes to properly compress a ferrule with the proper tool. I'll just stick to putting the stranded cable into the lug where the cable gauge doesn't exceed the lug size.

Lol. My first car was a 67 B I bought in 1974. I rebuilt it all and drove it until it broke in half. Ontario winter driving meant scraping the inide of the windshield while driving and wearing heavy winter clothing. I'd have been warmer on a motorcycle :ROFLMAO: I'm sure Justin will get you...

I'll have to ask my friend with a Seneca if he has an ATS. I had one in my fifth wheel. It's part of the gen prep package even if a gen isn't installed. If I paid for a factory installed gen and had to go outside to plug in a shore power cord I'd be back at the dealer to have it done correctly.

EDIT: my info was wrong so I removed it

I have the Renogy 3000w PSW inverter. I had a large load on it when my wife turned on her hair dryer. Current draw got up over 200A before I told her she was doing too much at once and turned of the dryer. Mine never shut down at all and I'm fused for the full 3000W so that didn't blow either

Yes. I built a board for the ESP32 that has a voltage converter for power and then connects to the BMS serial port. Should be pics somewhere on here found it https://diysolarforum.com/threads/jbd-bms-wi-fi-module.17252/page-9#post-368757 there's a small buck converter under the ESP32

I'm assuming he's referring to the 7pin feed from the truck brake controller. The +12v feed from the 7pin has no bearing on the brake system and for LFP/solar installs can be disconnected. The current drawn by an engaged breakaway system is the same regardless of where the power comes from...

You have 3 power sources. The inverter handles two. The ATS switches between two to make it show up at the inverter as one. At least that's the way I would expect it to be.

I wrote my own. https://github.com/playersz28/JBD-ESP32

Yes, there were 4 holes in the board that I could put a #4 wood screw through and they match up to the bosses on the spacer I printed.

Did you find a shop/person to help you make the install correct? Closest person I know to GA is in Gulfport MS

It's not off the shelf but I have JBD BMS's and use an ESP32 on each to send data to MQTT on my network in an RV

That's him. Friend of mine. Panelsupsolar.com

Or just quit with the paralysis by analysis and just build a system. If it's wrong then change it. LOL For further info see the Cell Clamping thread

I read that one. All of the data reduction I've seen so far requires creating another set of data with less points which changes the Grafana charting when you want to zoom in/out. Just wondered what others have setup for their db's. I can't be the only one that has run into this issue as it's a...

There's a pic of my batteries on this thread https://diysolarforum.com/threads/battery-build-rept-280ah-jbd-bms.28459/#post-356054 I used binding posts as my connection point for the pos & neg connections to the RV. My trailer has solar panels charging it up during the day (most days, I'm in...

Simple question... simple answer. Yes. You can use the 30A-15A converter block and plug the shore power cord into the outlet on the face of the inverter and all of your AC circuits will be live the same as if plugged into a pedestal. No grounding issues as it's in the cord. Turn off the...

DC appliances will be more efficient in total Whr usage vs AC appliances but they usually cost more. In the case of TV's they are usually lower quality and small. With 600Ah and 800w you don't really need to worry about efficiency as you have lots of power. You'll run out of room to install...

I saw the code for a Wanderer. I'll go back and look again. Maybe the Wanderer and Rover use the same register format

I'm top balancing some 150ah and 280ah cells at this time and then I want to capacity test them. I'm charging the 280's in a 4s config as they were pretty low voltage and my 10A supply will take days or weeks to top them off. Are you guys charging cells in parallel after discharging them to...

I'm using ESP32's to read the BMS info and there's a field in the response data to indicate how many temp sensors there are. The 150A JBD units I'm using (long style) only have one. I also have a pair of short ones and they have two sensors