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I got frustrated one day and started to roll my own monitoring software for my growatts and jbd bms and have it report to Homeassistant via mqtt. The standard stuff, pv watts, the load, etc. I added a rest api to it so I can perform actions from nodered. I like nodered for automation, you get to...

Hello So I've got a bit o an issue; my smartshunt reads over 200+ volts when there is a usb-to-serial connected. When it isn't connected the readings are fine. This setup has worked for well over a year but then from one day to another it no longer read the right values. It's hooked up to a...

Hi Before I get deeper into this solar adventure I would like to hear if I'm doing it correctly. European setup, 230v grid, mono phase, max load on the house 4500watts. It can happen however that the wifu goes apesh*t and turns everything on and I've seen occasional loads of 7000 watts (this...

and if it is like any other winter here there will be no real energy coming from the large fusion ball way up high. But there is a bandaid available to me; low grid tariffs at specific hours during the night, and that is an excellent way to store some kwh's at a very nice discount. But what...

Hi. I'm super new to this. I'm about to pull the trigger on a Growatt SPF 5000 and I was going through the manual on how to wire it and I see it has a AC In and AC Out and I don't know how I would have to wire this. All the wiring diagrams I can find are for the US market but I live in Belgium...

Hi I'd like to know what the correct charging / cutoff settings are for a 16s 304AH Lifepo4 battery bank. I currently have this setup : I have no idea what to enter for float charge and bulk charge, I did read that floating is a bad idea with Lifepo4 and therefore I decided to enter 16 times...

Hi I currently run a 304AH 16S battery bank. It's nearly always full at the end of the day but I can't quite get trough the night with it's stored capacity due to electrical heating eating a ton of energy. So I decided to add another bank to the setup albeit being slightly smaller in AH due...

Hi I'm going to be adding a 48v 280AH battery to my existing 48v 304AH battery storage. Currently the 304AH battery pack has a JBD bms which is doing it's job, keeping the cells safe. It does not have any communication to my inverters (2P SPF5000ES), the inverters know when to disconnect the...

It finally arrived. The batteries are still on their way, is there a way to power this bms and start communicating with it ?

Hi I've been charging my battery bank using a spare spf5000es but this inverter finally can go to the cabin for use there. I would still like to charge the battery bank using offpeak gridpower with something that is hopefully optimized to do such a thing (so not a solar inverter with a grid...

Should it be done ?

I've rolled my own kwh energy meter for energy in and out of the battery by sampling the watts in/out at a fixed interval. It works but it's all getting to be alot to maintain. So I was wondering, is there perhaps some type of shunt ot "box" that can measure the kwh in and out of the battery...

It's not a battery. Selling two JBD BMS's. Currently they are wired for 16S Lifepo4. One is 300A rated and has a RS485 connector + BT The other one is 200A rated and has BT. Located in Belgium, Europe I think I paid around $185 each. Perfect working condition, I'm selling them because I run...

I'm finalizing my installation and putting in place all the required components to get it pass inspection, so everything has to be to code. My installation now has all the required doodads to pass inspection. So before I invite the pencil pushing civil servant I decided to run trough an...

Hi. I have 304 and 280ah batt bank, wired in parallel, both have a JBD BMS, the one with the relay : Jaibaida AP20S003S 7~20S. I'm having an issue with the 280ah; it'll trigger an over-voltage disconnect (one cell will peak to 3.65) and the relay will disconnect the battery and because the 304...