I have 3x 280Ah 12V batteries in parallel running into a Phoenix 12/800.
Any recommendations on a good setting for the low voltage shutdown?
I have read variously around the internet that lower than 11.5 – 12v is already too deep a DOD to maintain the batteries for a reasonable life. Oddly, the default setting for shutdown on the Phoenix is 9.6V. Isn't that way too low? According to my (dodgy) sources, the battery should still be putting out ~10V at effectively 100% DOD.
I have contacted the manufacturer for discharge curves / data but you know. General recs are most welcome.