We have two case SR210 skid loaders. Our 2019 is showing amber electric fault 11.50 votes and drops as being run. Light, AC drops voltage more according to display. Was intermittent then stayed on.f Install new battery, still did the same after a while of running then battery drained. Installed new reman alternator worked with no low voltage then did the same. No crank next morningAfter charging full with main switch off , positive battery to frame. Cranks and start. Main ground cable fault? I have had bad ground cable on our 2015, but it was fixed by Case warranty.
From what I can gather, you seem to have a fairly substantial draw on your system. Did you check parasitic draw on system.
Did you get your SR210 Battery problem figured out. Do you know how to do voltage drop testing of cables , and load testing battery with only a multimeter. If you still need help we are around. Simon C