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Thanks SeaGal, I will focus on those CanBus ID’s.

I have done a lot with UPS’s. Right now the Lenovo 2.2kW running on 48 volts is working for me. Yes it has 4 dinky 9Ah batteries internal. I charged them up full and unplug them. In the back of the unit (see photo) there is an external battery input where I have a 20kWh DIY battery made up of...

I used two APC SU2200 UPS’s as is with my 16s50p, 26650 DIY powerwall. The chargers are not strong enough to do any damage to a 48 volt 150 Ah battery. Most the charging comes from my solar panels. Rarely is the UPS on Utility power put I have an external relay on the UPS power cord to take me...

Victron is the way to go. Just getting my feet wet 5 years ago A discarded APC UPS was the way to go. It has a clean sine wave and fast switchover from utility to inverter and back. But man they are so inefficient converting the DC to AC. When I win the lottery I’m getting Victron.

How you described the system should work is how my system work. My “Hybird inverters (I have two) are discarded UPS from work. I always had an old 3 kW SMA grid-tied inverter on my house that work great for saving me money during the day. 8 hours of California sun I turn it into stored battery...

Having started with 8, 100 watt Rich Solar panels I ordered off Amazon in 2018, they work fine. But seriously after being 6 years in this game I would not touch a 100 watt panel if my house depended on it. The 8 panels use to be my source for charging lead acid batteries when I was just...

Nice! You use them as is, or salvage the cells?

I know, I’m late as hell to the party but I got it! Send all zeros to CANBUS ID 0x4200 every second or two. I used an old Raspberry pi 3 for my CANBUS import RPi.GPIO as GPIO import can import time import os led = 22 GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) GPIO.setup(led,GPIO.OUT)...

I have that Batteryview software. The RJ11 port which is 4 wire, the two outer wires are ground hook them to 5 on your female DB-9 hook the inner two connections of the RJ11 to 2 and 3 on the DB-9. Swap them till you get something. Baud is 115K 8N1 if computer is new and no DB-9…you need a USB...

I had no ideal of all the form factors for cylindrical cells 18650, 26650 and a few 2170’s is all I ever worked with. Thanks for the eBay link. Last week I stepped into the prismatic cell world purchasing 7.5 kWh in 3 Sonnen brand server rack batteries. I started with Lead Acid to 18650 to 26500...

Hey Solar Guppy I’m late to the party but I’m in deep now. I have 3 Sonnen Batteries that have Pylontech BMS’s in them. This has force me to learn about Can Bus. I did all the YouTube watching, I know raspberry pi python programming very well so I bought the 2515 HAT to fit on the Rasberry pi so...

You have access to an oscilloscope? I have had experience with basically an Inverter (your SPH) powering another Inverter/ battery charger (your APC UPS). All my DIY Powerwall make the house run of the sun has been with two APC SU 2200’s I run one per 120volt leg and no they won’t synchronize to...

Nice! Cell(s) will go bad one day, you make the rebuild or repair much easier.

I'm late to the party but I bought 3 Sonnen 2.5kWh batteries. They are the "Sonnen Ndure". Today I cracked the RS232 port but there are no commands to make it stay on. Still good information though. This weekend I will crack the CAN BUS. Meanwhile I parallel two wires of the power button and...

I only had the 3 Sonnen batteries a day and I’m happy with my progress. I know a little CAN BUS protocol but I have a friend that is deep with it….may have to call in the big guns. But one way or another soon these 3 units will be on my powerwall.

I just got 3 of them yesterday $800 USD. They are a little different but the PYLONTECH BMS, will be cracked…..guaranteed.

Or used the BMS that comes with the unit. It‘s made by PYLONTECH and it’s a nice BMS.

Just got 3 Sonnen’s yesterday did you solve the timing out issue? I will be looking into that port labeled “controller“ this weekend. I already cracked the RS232 Port, it gives a lot of information but no command to make it stay on. The Sonnen Ndure model stays on 10 minutes before timing out.

Just was given 2 Phazr JLM ENERGY battery banks that you mount on the roof next to your solar panels, some are under the panels. I‘m savaging the cells and will put them in my battery shed. Anybody have experience with the brand “TOPBAND” LiFePO cells? They seem nice, I need to put them through...