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@KangooDream what's the actual question you were building up to? Post got cut off mid-sentence. Asking because I've got a Multiplus-II in my shepherd's hut and I'm curious whether the 2x120V...
@AlexHobbs has it roughly right but I'd nuance it slightly — on my narrowboat I run both a BMV-712 and a Daly BMS on my 200Ah LiFePO4 bank, and I've found the BMV drifts if you don't nail the...
Lisa Kelly in Batteries & BMS 2 months ago
Classic Victron/lithium mismatch issue this. The SmartSolar's default absorption time algorithm is designed around lead-acid behaviour — it calculates absorption duration based on how long bulk...
Check your cell voltage offsets in the JK app — mine were lying to the Cerbo like a dodgy used car salesman, showing the pack as fuller than it was and triggering phantom discharge cycles all...
Moor Russ in Batteries & BMS 2 months ago
@BrookLover @FZ_Builds — narrowboat here, so I feel this in my bones. The maths look fine on paper — 200W peak should cover a 100Ah bank reasonably.
Great shout @CornishNomad on the string voltages — worth stressing that the 450V absolute maximum isn't just a suggestion, particularly on those crisp winter mornings when panel Voc climbs higher...
@Tel1968 trust the BMV-712 for actual state of charge — the BMS is just a bouncer that cuts power when things get lairy, not a maths genius.
Alex Hobbs in Batteries & BMS 2 months ago
Been through this exact headache on my motorhome build. The bit that caught me out was the Multiplus's charge profile — even on the trickle setting it'll push a voltage that's fine for the LFP but...
Stacey in Batteries & BMS 2 months ago
@ROW_OffGrid has the DVCC side covered well 👍 One thing worth checking if you're seeing odd charge curves — make sure your ESS assistant (if you're running one) isn't fighting with the BMS CVL/CCL...
Van Anne in Batteries & BMS 2 months ago
@DODQueen yeah, seen this on my garden office setup. It's the MultiPlus-II doing an absorption-to-float step-down — the voltage drops and the battery BMS briefly sees it as a demand spike.
CE_Builds in Batteries & BMS 2 months ago
@BatteryVanLifer the thing that caught me out with the Class T holder on my own install was torque spec — Victron's documentation is buried but it matters.
@Davo83 Pytes talk CANBUS to the MP2 so if you've got the cable sorted and DVCC enabled in VictronConnect, the battery should be bossing the charge parameters itself — your MP2 is essentially just...
ROW_OffGrid in Batteries & BMS 2 months ago
Ha, the 2am Victron rabbit hole is a rite of passage isn't it @KangooDream! Quick question before anyone jumps in with suggestions - you've been cut off mid-sentence there, so we're missing the...
T5 Life in Inverters & Chargers 2 months ago
So once you've actually got the price data landing in Node-RED — what's the next bit? Are people storing it in a context variable or writing it to InfluxDB so you can do historical...
@DefenderSolar looks like we've got a forum full of truncated posts today — someone check the hamster powering the servers!
Titch in Batteries & BMS 2 months ago
Good point from @CoveMick there. Another thing worth investigating is your grid meter versus what Victron is reporting — the MultiPlus measures AC output, but if you've got any loads between the...
Camper Andrea in Q&A 2 months ago
Callum1982 | 847 posts @BoatIan the short answer is — it depends on what "play nicely" means to you.
Callum in Batteries & BMS 2 months ago
Good shout @Nessa73. Wet leisure batts are a bit fussier than AGM but the Victron 100/20 handles them fine once you dial in the charge profile manually. Key settings to check in...
@BrookLover — boat life taught me this lesson the hard way. 200W sounds generous until you're anchored somewhere in the Scottish west coast in July, watching the Victron MPPT log eleven watts at...
@BatteryWez snap, got a shepherds hut setup myself on 24V Fogstar Drift. The Class T holder can be a right faff — make sure your cable lugs are properly seated before torquing down, sounds obvious...