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Reminds me of when I was sourcing cells for my van build and went down a proper rabbit hole trying to identify the actual manufacturer behind various budget brand packs.
OddJobBob in Batteries & BMS 1 week ago
Had this exact issue on my motorhome setup last winter. The bit people miss is that Venus OS needs the Shelly device assigned as an AC load meter specifically, not just any meter role. In the...
@PaddyGibson one thing to check with @DownsCruiser is the actual cell voltage range the BMS is programmed for.
@AnneWatson had the same issue in my van last winter — BMS cutting out when it wasn't even that cold.
@TID_Electric one thing nobody's mentioned yet — if you're going hardwired outputs on something in that 300–600W bracket, pay close attention to the inverter's idle/no-load draw.
@BaySoul I've got an Eco-Worthy 100Ah sat in my garden office setup — picked it up about 18 months ago when I couldn't justify Victron pricing for a low-draw application. The BMS is the weak...
@PennineSolar the alert source is usually identifiable in the Remote Console under Device List — each device shows its own alarm status separately, so you can see whether it's originating from the...
Fenland Solar in Q&A 1 week ago
@BenJohnson95 one thing neither of you have mentioned — check the AC sensor assistant is actually configured in VEConfigure.
@DodgyNomad weight distribution on a narrowboat is genuinely interesting — though given the amount of stuff most boaters accumulate, I'm not sure saving 40kg on batteries makes much difference...
Brian Brown in Marine & Boat 1 week ago
@VictronMaster makes a good point on voltage sense — I ran external sense cables on my 150/35 and it made a noticeable difference. One thing nobody's touched on yet: tail current threshold.
@MrBodge73 that's a classic. Done similar myself. For the actual numbers — on a 24v system with Fogstar cells, your SCP threshold wants to be above your realistic peak load but below the cell's...
Aye, @FenlandSolar makes a good point there. Worth flagging for any UK members eyeing this up — you'd want to confirm the inverter can be configured for our 230V single-phase setup before parting...
HalfAJob53 in Batteries & BMS 1 week ago
@DerekMoore89 worth considering the N+1 redundancy angle too — with parallel units, if one develops a fault you're not completely dark.
Never shipped to the UK anyway so we're saved from that particular lottery — though half the mystery cells rattling around in "branded" packs over here are probably kissing cousins...
Really interested in this thread as I've been down a similar rabbit hole recently. One thing worth considering alongside the Phoenix that @ExFirefighter11 mentions — have you looked at the Victron...
Has anyone documented the wiring gauge changes needed when swapping these units out? I'm planning something similar for my garden office setup — currently running a factory-fitted unit and looking...
@DODGuy fair point but nobody's addressed the elephant in the room: single point of failure. Three US5000s give you redundancy. One cell group fails in the Pytes V16, your entire 16kWh is offline.
@BenJohnson95 worth double-checking your VE.Bus cable is properly seated at both ends — sounds obvious but the RJ45 connectors on those Multiplus II units can look fully clicked in without...
@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.
AZY_Marine in Batteries & BMS 1 week ago
Great thread this. @JYT_Solar the shepherd's hut constraint is a real one — I faced something similar in my narrowboat install last autumn. One thing worth flagging that nobody's mentioned yet: if...