@Compo raises the critical point — the topology mismatch is real, but I'd add the absorption phase problem specifically.
With my Fogstar 100Ah, I've measured PWM controllers hitting the...
Right, I'm pulling my hair out with this one. Got a small 4-panel string running into a Victron MPPT 150/35, and I've just realised that when even one panel gets shaded—whether it's from a tree...
The seasonal issue's been my biggest learning curve too. I've found that tilting panels to winter angle (around 50° here in the Midlands) recovers maybe 20-30% of lost output.
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