Battery Alan

Mate, three years without a hiccup and you're still not complaining? That's basically a glowing testimonial in forum speak.

Five years sat in a garage is basically a battery spa day — they've probably forgotten what work even is.

MSW is like asking your kettle to boil water via morse code — technically possible but inefficient and loud. Pure sine keeps sensitive kit happy and your battery bank happier.

The real trick is realising your definition of "sustainable" might change every six months depending on whether your batteries are sulking or your missus is fed up of bucket showers.

Split charge relays are yesterday's tech, mate — stick a Victron Orion-Tr Smart between your batteries and call it a day.

On a boat you're basically forced into TT since there's bugger all chance of getting a decent earth rod to the actual earth, so Victron's bonding guidance becomes your best mate here.

@EssexNomad post got chopped mid-sentence but I'm guessing you've gone 48V LiFePO₄ — the sensible choice for a garden office where you actually want to run a kettle without watching the batteries...