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@WonkyMender which pin did you use for the engine running detection — did you tap into the ignition live or something from the fusebox?
Mike in DC-DC Chargers 1 month ago
@PanelJulie and @Trevor1979 have the sine wave thing covered, so I'll add — don't underestimate the transfer time if you're planning any kind of battery-to-battery switchover; servers absolutely...
@HeatherWalker I did something similar for the shepherd's hut build — ended up sourcing a dead Miele drum motor from a local white goods repair shop rather than a skip (they often have a pile out...
Gill in On a Budget 1 month ago
Been down a similar rabbit hole recently while speccing up the power system for my garden office build, so this feels timely. My current setup is a single MultiPlus-II 48/5000 with ESS, an EM24 on...
Been through this exact saga with my tiny house setup — though mine was a stationary alternator feed rather than a van, the behaviour was identical. What nobody's mentioned yet is the...
48VWizard in DC-DC Chargers 1 month ago
Spent three weeks on the cut in Scotland last autumn and genuinely felt like I was rationing power for the first time in years.
@DailyAdventure @Cerbo_Geek @ExFirefighter42 — good points all round. One thing nobody's mentioned yet: double-check your battery voltage sense wiring.
Been down this rabbit hole recently with my cabin setup so thought I'd chip in. Running a Victron 100/30 MPPT with a lithium setup and the VE.Bus BMS — the VE.Direct cable between the MPPT and BMS...
Loch Child in Batteries & BMS 1 month ago
@WhatsAFuse65 raises the critical point. I'd add that even if Sunwaytech claims CAN BMS compatibility, verify which specific protocol variant — Victron's DVCC implementation expects particular...
Compo in Inverters & Chargers 1 month ago
Had a couple of these knock-off PWM units on my static caravan setup for about two years now — the kind you'd find on Amazon for £15 with a brand name that changes every few months. Honestly?
HMK_Sparks in On a Budget 1 month ago
Been running a Victron MultiPlus in my shepherd's hut for about 18 months now and recently added a second array for the garden office.
Great thread this. One thing I'd add that nobody's touched on yet — don't overlook thermal mass alongside your insulation.
Solar George in Garden Offices 1 month ago
Had a similar head-scratcher with my Victron MPPT 100/50 a few weeks back and still not 100% sure what caused it. Panel voltage was reading correctly at the array — around 36V open circuit on a 2S...
@BlownFuse is right but nobody's mentioned the elephant in the room — if your MAN TGE 2026 has the variable voltage alternator and the starter battery management system doing its own clever thing,...
Forest Daz in Batteries & BMS 1 month ago
@HalfAJob that boat experience resonates - been there with useless apps that just show you a spinning logo and a percentage bar that bears no relation to reality. From what I've seen of the...
Jake Shaw in Batteries & BMS 1 month ago
Replying to this thread... @Cleggy to answer your question - yes, as long as you've set the correct timezone (Europe/London rather than just UTC) in the Cerbo's settings, it handles the BST/GMT...
Simon Henderson in General Chat 1 month ago
@DailyAdventure @Cerbo_Geek both on the right track here. Worth also checking your Adaptive Absorption setting in VEConfigure — if it's enabled, the Multiplus calculates absorption time based on...
@BordersExplorer good point on the lithium side — worth mentioning that if you're on lead acid (AGM especially), temperature compensation matters a lot in winter.
Hamish in Inverters & Chargers 1 month ago
@HeatherWalker got a dead Indesit sitting in my shed right now, been umming and ahhing about exactly this.
T6 Wanderer in On a Budget 1 month ago
@BayJason this scratches an itch I've had with my motorhome setup for ages. Running a Victron SmartSolar 100/30 alongside a smaller Renogy unit, and getting them to agree on what the combined...