diy solar

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  • Just finished my new ground mount

    8.6KW of solar on this one.... Currently sitting with a total of 17.5 KW of solar on my property and it still feels empty... I guess ill build a second one. So i built this out of treated wood (mostly). Its 42 feet long x 4 feet wide x 6 feet tall with 11ft uni-strut. Total cost for wood: $420...
  • LFP cells gone bad

    These are battery cells from my coworker. My coworker is a licensed electrician and insisted he knew what to do. He decided that a BMS was not needed and that the inverter would take care of regulating and protecting the cells. So he left the power on in the middle of winter, the batteries...
  • How many smart shunts are needed in a multi-battery setup?

    So after fixing most of my system failures at -40C, i installed my first victron smart shunt. Its monitoring (2) 48v battery banks. I have 3 battery banks with more cells on the way to make it 4. Total (current) capacity of battery storage is 930AH. This will change in 2 months to 1240AH. So the...
  • Designing a new house around my current and future solar system

    I am designing a new house around my current and future solar needs. I am curious as to how many people here are running multiple inverters dedicated to different sections of their homes? My original plan was to have 4-6 inverters powering different sections of my house. But i am not sure if...
  • Growatt 6KW inverters and over paneling

    Before i start... i search the forum and i saw a lot of back and fourth on yes over panel and no. I have 3 6KW Growatt inverters. Right now all 3 inverters are have about 3kw of solar attached. I just finished building a new solar mount and i want to max out these units. My max PV for this...
  • seplos battery monitor software help

    Hi guys, Im sure this has been covered soo many times but i bought a DIY battery kit from QSO i am having issues getting this monitoring software to work. I got a RS485 to usb adapter and wired it according to the manual. The software.... so i followed the instructions: first import the...
  • first victron smart shunt

    I just bought a smart shunt and i want to wire it up to 3 battery banks to monitor. I know that it will work with 2 bank, what do i need to do to get 3 or even 4 battery banks working on this unit? My second question is connecting this smart shunt to multiple banks. Right now i have 3...
  • Lithium vs flooded/AGM with current prices, is it worth it.

    I am in heavy debate right now regarding batteries. I am moving from a 12v system to a 48v system, and i am having a hard time deciding on batteries. I need some help. Currently i am using flooded and sealed batteries but they are old and wont last too much longer. I was leaning more to lithium...
  • lithium cells over voltage

    I have 2 cells in a 16s configuration that are 3.86V. The remaining cells are all perfectly fine, all in a normal range. I reached out to the supplier of JK bms and they believe that the welding in the cells are faulty. These cells have worked fine for 4 months. They have been charged to 100%...
  • battery banks with different capacities

    I have a 100ah 48v battery at my cabin and i am looking to expand. I was planning on adding 16 230ah 48v battery bank in parallel. Is there any cons to using 2 very different sized banks together? I have a friend who is interested in buying my 100 ah cells. My other option is to buy 304ah cells...
  • one BMS taking more load in a multi battery bank setup

    I currently have 3 (48v 304ah battery banks), each with their own bms (2 JK bms units and 1 with a jiabaida bms). What i am finding is my battery bank with the jiabaida bms is basically controlling everything. If that bank runs out of energy the entire system shuts down. I have checked the...
  • Growatt 6K cause power outages at night

    Hey guys, I have a strange problem going on with one of my growatt inverters. So i have 2 growatt 6K split phase units and 1 EG4 6000ex (just for reference). Both Growatt units have solar and are drawing from the same battery bank. Both units have been working issue free for 2 years. Each unit...
  • Combining 2 charge controllers to charge one battery bank

    I am sure this has been discussed in the past, but i have a few questions. I have 3 - 230W solar panels and 1 - 40A & 1 - 20A EPEVER Charge controllers. Right now i have 2 panels connected to one controller in series going to my battery bank. I would like to add another panel and controller...
  • Brand new to solar

    Good day, I was recently given 8 used solar panels from a farm down the road. These panels were only in service for 4 years. Each panel is 230W. I really didnt plan on jumping into solar so quick but since i have them, i want to make use of the potential energy. I was thinking about adding power...
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