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Had exactly this with my 100/30 on the shepherd's hut build last summer. Turned out the default absorption time was far too short for my battery state — Victron's adaptive algorithm was seeing a...
@DownsCruiser had this on my shepherd's hut build when I was road-towing it regularly. The fix that actually worked for me was enabling the engine shutdown detection in the VictronConnect app and...
Smudge78 in DC-DC Chargers 3 months ago
Been mulling this over for a while and thought I'd finally post about it. I've got a Victron Multiplus II in my motorhome build and I'm trying to get my head around whether it's happy running in...
Stumbled across this video last night and it's got me thinking. The Eneramp setup looks genuinely tidy — especially the way Little Rosie handles the BMS and comms in one compact unit.
@MountainBarry what nobody's mentioned yet is the cell balancing state before absorption kicks in. If one cell in your parallel bank is sitting slightly higher than the others when the Victron...
LiFePO4Nerd in Batteries & BMS 3 months ago
@OldSailor79 oh this takes me back — I did exactly the same with my static caravan before I sorted the solar and battery setup. Freezing legs in January despite lovely warm walls!
Camper Jackie in Garden Offices 3 months ago
@LutonBuild the real villain here is synchronisation — if your SmartShunt hasn't seen a proper 100% full charge to reset itself, it just drifts off like a confused uncle at a motorway...
Hilux Build in Batteries & BMS 3 months ago
@Curly16 classic Victron — "VE.Smart Network" sounds like every device talks to every other device, until you actually need them to, at which point the 100/30 apparently puts its fingers...
@HighlandDweller Done a similar swap on my off-grid cabin rather than a boat, but the physics is the same — you're suddenly actually using that bottom 50% of capacity you were always leaving on...
@ExJoiner19 garden office is actually where I started before moving on to a shepherd's hut build, and honestly the overlap with marine installs is bigger than you'd think — moisture ingress is...
Neil Burns in Marine & Boat 3 months ago
@WendyFisher61 classic DESS nonsense. Your feed-in excess threshold is probably set too low, so the system decides it's cheaper to nick a tiny bit from grid rather than discharge further while...
@24VGeek worth being precise here — the ET112 is a single-phase meter, fine for most shepherd's hut setups, but if you're ever adding a second phase later, you'll want the ET340 from the off. The...
@FenlandVanLifer yeah Scotland in December is basically a lost cause for solar-only, sorry to say it but it is 😅 Done similar up near Fort William in the van — even with a decent Victron MPPT...
@LH_Marine has covered the usual suspects well. One thing I'd add from bitter experience on my narrowboat install (single-phase but same ESS logic applies) — check your grid code settings match...
Seen this exact issue on my narrowboat setup. The 100/30 has a known limitation where it ignores external current sense data from a BMV or SmartShunt on the VE.Smart Network — it only uses the...
@EmmaEdwards82 really sorry to hear about the delamination — did that happen within the warranty period?
ExJoiner in On a Budget 3 months ago
Eight months without a catastrophic failure is basically a glowing endorsement for budget Chinese cells tbh. That said, I'd be watching the BMS behaviour closely at low temps.
@SprinterProject what did you use to test capacity on the individual cells? I've got a pile of old ThinkPad and HP packs sitting in a box on the boat that I keep meaning to pull apart, but I'm...
Muddy Tinker in On a Budget 3 months ago
Great thread this. @MountainBarry I'd check what absorption voltage your Victron is actually set to — the Fogstar Drift cells are quite particular about not exceeding 3.45V per cell, so for a 12V...
@OldSailor79 Done the same on my narrowboat — spent a fortune on Celotex for the walls then basically sat on a raft of cold misery for two winters before I admitted the floor was the problem.
OffGridGeek in Garden Offices 3 months ago