Overmind
Member
- Joined
- Jan 16, 2019
- Messages
- 489
After persisting on doing everything on my own I finally managed to get my solar system up and running.
There were way more small things to do compared to what I anticipated but at least I learned from my own personal experience everything that's needed.
I ended up with 4Kw of panel power, 20Kw of LiFePo4 16s cells with JK BMS, 6Kw inverter.
Battery lasts almost 2 days with no solar input at 49V cut-off (will SW to 48 after I add another row of batteries).
I can add another battery and even more panels if needed. With another row of batteries, the single point of failure remains the inverter.
Inverter is set to SBU mode. For now, mains are mostly unused backups, but that will probably change towards the winter.
After all this I would not recommend anyone to try it in the same manner, as in on his own and with zero experience, since there will be a lot of small stuff you will encounter and struggle with. But the gain XP has value, so at least I can say I did it my way and it even complies with most best practices. And added some nice bonuses too (like a real time digital counter on the inverter output).
Sorry, no pics for now, my junk-i-phone dies every 2-3 weeks and needs complete or partial re-softing.
Up next: I'm thinking if to experiment with lead in parallel, the logic being that lead will only sustain the load when LiFePo4 is already nearly depleted, but I need to study the SLA-to-LFP drain at a smaller scale 1st, as I don't want the SLA to put unnecessary loads on the LFPs.
The only reason I'm considering this is because I have some free SLAs to play with.
There were way more small things to do compared to what I anticipated but at least I learned from my own personal experience everything that's needed.
I ended up with 4Kw of panel power, 20Kw of LiFePo4 16s cells with JK BMS, 6Kw inverter.
Battery lasts almost 2 days with no solar input at 49V cut-off (will SW to 48 after I add another row of batteries).
I can add another battery and even more panels if needed. With another row of batteries, the single point of failure remains the inverter.
Inverter is set to SBU mode. For now, mains are mostly unused backups, but that will probably change towards the winter.
After all this I would not recommend anyone to try it in the same manner, as in on his own and with zero experience, since there will be a lot of small stuff you will encounter and struggle with. But the gain XP has value, so at least I can say I did it my way and it even complies with most best practices. And added some nice bonuses too (like a real time digital counter on the inverter output).
Sorry, no pics for now, my junk-i-phone dies every 2-3 weeks and needs complete or partial re-softing.
Up next: I'm thinking if to experiment with lead in parallel, the logic being that lead will only sustain the load when LiFePo4 is already nearly depleted, but I need to study the SLA-to-LFP drain at a smaller scale 1st, as I don't want the SLA to put unnecessary loads on the LFPs.
The only reason I'm considering this is because I have some free SLAs to play with.
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