I live in my bus half the year, other half is in a regular house. I run a 24v system with epever mppt charge controller, 900w in panels, current connected bms. 8x eve 3.2 v cells. I stay in southern California during the winter so sunshine generally isn't a problem.
Last year I was able to run pretty much everything I wanted with no need for power conservation. I was gaming on my PC, running a mini fridge, wifi, etc. Generally it was a set it and forget it type setup. Got to CA last week and now I'm suddenly facing a power crisis.
I wake up yesterday morning and I'm in the low 25's, never seen that before. I'm watching the voltages and it goes up to low 26's. Normally it would hit low 26.5 then by the next morning I'd be at 26.1. Before I go to bed I hit 25.5 and by the time I wake up I'm dipping into the 24's. I e never seen it gets that low before and I've never had an issue with running them low.
Today the sun was out and I see the power move to 26.5, 5ish hours of charging @ 15-20 amps. 2 of 10a, then 2-3 more @ 5a or so. I didnt run anything but the mini fridge and wifi. Watched the power drop like a stone from 26.5 to 26.1 over 3 hours.
I currently have a plug in power meter on order, forgot mine. Going to do some testing with the power meter to see if anything is drawing way more power than before. I did leave home with around 25.5v in the system. I didn't feel comfortable having the panels on since it dipped below freezing in the morning. Didn't turn them on until I got out west and the temps were good.
Also my 4th cell seems to be a bit of a quitter and drops much faster than the others. Do y'all think my cells have degraded? They were of the AliExpress variety, but are only 12 months old. What are my options for cells these days? I know the lifepo4 world moves pretty fast. Cells also show no signs of bloat. Only thing I can think that's changed is adding a 12v 20a power supply for the heater that I only used a few times, will the power supply draw that much even if the heater isn't in use?
Last year I was able to run pretty much everything I wanted with no need for power conservation. I was gaming on my PC, running a mini fridge, wifi, etc. Generally it was a set it and forget it type setup. Got to CA last week and now I'm suddenly facing a power crisis.
I wake up yesterday morning and I'm in the low 25's, never seen that before. I'm watching the voltages and it goes up to low 26's. Normally it would hit low 26.5 then by the next morning I'd be at 26.1. Before I go to bed I hit 25.5 and by the time I wake up I'm dipping into the 24's. I e never seen it gets that low before and I've never had an issue with running them low.
Today the sun was out and I see the power move to 26.5, 5ish hours of charging @ 15-20 amps. 2 of 10a, then 2-3 more @ 5a or so. I didnt run anything but the mini fridge and wifi. Watched the power drop like a stone from 26.5 to 26.1 over 3 hours.
I currently have a plug in power meter on order, forgot mine. Going to do some testing with the power meter to see if anything is drawing way more power than before. I did leave home with around 25.5v in the system. I didn't feel comfortable having the panels on since it dipped below freezing in the morning. Didn't turn them on until I got out west and the temps were good.
Also my 4th cell seems to be a bit of a quitter and drops much faster than the others. Do y'all think my cells have degraded? They were of the AliExpress variety, but are only 12 months old. What are my options for cells these days? I know the lifepo4 world moves pretty fast. Cells also show no signs of bloat. Only thing I can think that's changed is adding a 12v 20a power supply for the heater that I only used a few times, will the power supply draw that much even if the heater isn't in use?