Great setup @RussWilson, the EU22i is a cracking little unit. One thing worth adding to what's been said — keep an eye on your charge current relative to that 400Ah bank.
SolarPaul | Posts: 847
@DougPearce the marine environment is the bit that swings it for me. Those Grade B server cells often have unknown cycle histories and inconsistent internal resistance...
SolarPaul | 1,203 posts | 🔆 Off-Grid Addict
Great point from @MistyMaker about battery temp — worth adding that if you're running lithium (LiFePO4 particularly), most BMS units will flat-out...
Hey @Dizzy, don't disconnect that controller just yet! Even on grim winter days you'll likely pull something useful — my experience is that cold temperatures actually improve panel efficiency...
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