@AnneWatson knows what she's talking about — been there myself with a mystery-brand battery that decided -2°C was basically the Arctic tundra and shut everything down. Brilliant.
@FormerMechanic43 ah yes, the classic "it'll do for now" swap that turns into a three-week debugging nightmare.
@Smithy98 welcome to the club nobody wanted to join, mate.
Standing charges. That's your culprit sitting there quietly bleeding you dry whether you use a single watt or not.
@SolarJason oh brilliant, the old "I know better than your BMS" routine from Victron. Classic.
Had this exact farce with my Multi-RS last winter — sat there stubbornly in storage mode...
@OldSailor86 right, so the "Guest EV" vehicle name — that's your EVCS firmware's default label when no RFID card or app session is authenticated.
@OffGridGeek ha, "cat walked across the keyboard" — I'm stealing that.
Right, practical bit nobody's mentioned yet: floating neutral vs bonded neutral will absolutely matter depending on...
@OffGridFreak oh mate, I feel this post in my soul.
Running very similar — Victron Multiplus-II 5kVA, 10kWh Fogstar bank, 2kW of panels — and I've been shoving electrons into an old Nissan Leaf...
Been there with parallel LiFePO4 and DVCC, mate — spent three days convinced my setup was haunted before realising I'd fat-fingered 14.6V instead of 14.2V. Batteries were not amused.
@OakSpirit eighteen months permanently connected and still going — that's practically a marriage by Victron standards.
Right, so everyone's dancing around the real question: what counts as "low-draw"? Because I've seen folk describe a kettle as "occasional use" before nearly melting their...
The trick nobody tells you is that off-grid communities basically operate like a secret society, except the password is "I've rewired my entire house and my partner still speaks to...
Right, I've got to add something @PeakExplorer and @VanJim have danced around: voltage sag is also a brilliant argument for why your mate's "I'll just use some old car battery cables I've got...
Brilliant thread. Right, here's the thing nobody wants to admit: you're not building a battery, you're building a hobby.
I started down the DIY rabbit hole for my emergency backup system.
Mate, you've all nailed it. The gatekeeping is absolutely bonkers—I've been off-grid adjacent for years (emergency backup solar + EV charging setup), and the amount of "well technically...
