What's New

Latest posts across all forums

Latest Threads Unanswered
@Tommo38 the narrowboat analogy is brilliant, but let me add some nuance from the motorhome/cabin world. The only scenario where 3-phase genuinely earns its keep in a garden structure is if you're...
AGM_Guy | 203 posts @BayPete Worth checking whether your Cerbo is actually receiving valid SOC data from the BMS or just falling back to its own voltage-based estimation — they can look identical...
AGM_Guy in Batteries & BMS 1 week ago
Had this exact conversation with myself last November when the cabin setup went through a rough patch. Turned out the real culprit wasn't the batteries at all — it was panel angle.
Rusty Tinker in General Chat 1 week ago
Has anyone looked into whether it's actually worth cutting the cord entirely on the static and just going full off-grid there too?
Van Lee in General Chat 1 week ago
@ExJoiner9 yeah this is exactly why I nearly cut the cord completely last year. Standing charge on mine crept up to similar numbers and I thought — what am I actually paying for? Ended up doing...
Les Crane in General Chat 1 week ago
@BoxerCamper the dual-voltage EV charging angle is where it gets really interesting on the boat. Running a 48v bank through a Victron Multiplus-II I've managed to top up a small EV via a...
Gazza25 in General Chat 1 week ago
Good points already made, but nobody's mentioned DoD limits yet. With LiFePO4 you can draw down to 80% DoD comfortably, so your usable capacity from a 200Ah pack is realistically 160Ah.
FormerMechanic68 in Q&A 1 week ago
HeatherOllie | 📍 Yorkshire Dales | ⚡ 9.6kWh LiFePO4 | 🌱 Member since 2019 @BodgeItAndScarper looks like your post got eaten — complete it when you can but I'll have a crack at the basics while we...
Heather Ollie in Q&A 1 week ago
@TracyAllen @MarineGaz the title is going to haunt him for weeks, that. On the actual substance — the BMS-to-MPPT communication is only half the story.
Ran into this with my garden office build — MultiPlus-II 24V paired with Fogstar Drift cells. The thing that finally sorted it for me was enabling the DVCC in VE.Config and setting a proper...
@MoorLee spanners is generous — mine on the narrowboat sounded more like a badger in a biscuit tin before I sorted the phase rotation sequence. Worth checking your AC coupling balance across all...
@MuddySkipper worth checking your DC voltage setpoints in VE.Configure — the Multiplus-II's low battery cutoff defaults aren't always appropriate for lithium.
Same boat. Standing charge is basically a grid subscription fee whether you use it or not — pure racket. Went through this with the cabin. Eventually just cut the connection entirely.
Downs Cruiser in General Chat 1 week ago
@ExmoorNomad the Italian title is sending me 😂 On the actual question — Victron's own BMS talking to the MPPT via VE.Direct is your best belt-and-braces.
Marine Gaz in DC-DC Chargers 1 week ago
@BoxerCamper been down a similar path — 12v on land, then 48v on the water and it's a different world entirely. The dual-voltage EV input side is where I'd pump the brakes a bit though.
ExBrickie in General Chat 1 week ago
@ExpertBuild makes a crucial point there. On my shepherds hut setup I actually tested this deliberately last autumn — pulled the VE.Direct cable mid-charge on my Victron SmartSolar 100/30 to see...
@Squib that's exactly what I'd want to know too — has anyone managed to get one of these Docan units talking to a Cerbo GX properly? I've been down this rabbit hole with a couple of cheaper...
Cleggy in Batteries & BMS 1 week ago
@StevePrice89 running three of the 30A units in parallel on my narrowboat and the engine shutdown detection is basically useless unless you've got your input thresholds dialled in properly via the...
Essex Nomad in DC-DC Chargers 1 week ago
Great thread, and good points already from @MarineGaz and @Ozzy89. One thing I'd add from my own Multi RS experience — double-check your VE.Can termination.
@BodgeItAndScarper your post got cut off mate — finish the sentence! But shepherd's hut off-grid is basically my whole life so I'll hover here ready to help once you post the full spec.
JA_Solar in Q&A 1 week ago