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February 1, 2025 1:14 pm
I recently purchased the Grid Boss and Flex Boss and 3 wall mount batteries. House is not built and I had to put everything into storage. I am trying to figure if it would be better to incorporate a second inverter into the system. My array design would provide 5 strings that produce 21,600 watts. The modules are BF so the production can be up to 20% more. Since there is a max of 16,000 watts with PV and 12,000 without usable and 90 Amp max into the Grid Boss on one port, would it be better to split the array output and supply two inverters? I'm thinking that would provide more usable power. Any insight or experience would be appreciated.
I jalso have a question on the indoor wall mount batteries that I put into storage. How long can I keep them stored before needing to charge them? I have no idea as to the current SOC. I understand they will lose a % of power as time goes on, but does anyone have any idea what that is?
Thank you for your response, Bob C
February 2, 2025 2:33 pm
I am no expert, but my personal experience with lithium batteries in general is they will hold a charge for an extreme amount of time.
Way back in 1999, before Y2K, I purchaed a small ham radio to use in the EOC while waiting for the clock to tick down to midnight. That was the only time that I had used that particular radio. Ten (10) years later if found that little radio in my storage shed, untouched that whole time. The battery was still fully charged!
Today's LiFePo4 batteries with BMS' are capable of maintaining a charge for a very long time indeed. I also have a few 12v LiFePo4 batteries from Redodo that have held a charge > 12 months.
Unless otherwise directed by Signature Solar or EG4 experts, I would not worry about them until ready to install.
February 23, 2025 9:55 pm
Check the battery voltage and don’t worry about SOC if storing. If they go dead you could have problems. I think max loss is 3% per month but could be wrong. I just posted on another thread that you will probably get more responses on the main thread page. Good luck
