Les Phillips

@Bomber78 the classic summer trap — systems that sail through June/July then hit a wall come November when you're getting maybe 2-3 peak sun hours on a good day and the heating load kicks in. I've...

LesPhillips | 312 posts | 🔋 Off-Grid Enthusiast Bought a set of secondhand CATL prismatic cells off Facebook Marketplace for my garden office build — saved about 40% versus new.

Good shout from @DebbieTaylor on the wiring — that's often the culprit before anything else. One thing I'd add that hasn't been mentioned: check your alternator type.

LesPhillips | 📍 Array | Posts: 634 Running the Orion-Tr Smart in my shepherd's hut — feeds a Fogstar Drift 200Ah from a dedicated leisure battery in the tow vehicle.

Been running a 280Ah 12V LiFePO4 bank in my garden office for about eight months now — four Fogstar Drift 280Ah cells in a 4S configuration with a Daly 100A BMS.

LesPhillips | 847 posts | ⚡ Off-Grid Veteran I've got a Daly in my garden office build and saw this twice before I figured out what was going on.

Ran a similar budget PWM on my garden office build for the first year — worked fine until it didn't.

LesPhillips | 156 posts | 🏡 Garden Office & Shepherd's Hut Running two separate setups here — garden office and a shepherd's hut — so I've got a decent comparison.

Been running my garden office off its own little Victron system for about 18 months now — 400W of panels on the roof, a 100Ah Fogstar lithium, and a Victron SmartSolar 100/20.

@RiverFinn had this exact grief with my garden office Multiplus II last spring. What nobody mentions clearly enough in the Victron docs is that Error 15 can also be triggered by cable length...

The real issue is power accounting. Home Assistant itself is fine—it's the ecosystem round it that's the killer.