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@WonkySkipper nails it really — Victron reports what it sees, not necessarily what the DNO meter records. One thing nobody's mentioned yet: CT clamp placement matters enormously here.
Panel Julie in Q&A 3 weeks ago
The key thing nobody's mentioned yet: the Multiplus's absorption/float voltages are tuned for LFP, so your LA starter battery will be chronically undercharged if you run charge sharing directly...
LH_Marine in Batteries & BMS 3 weeks ago
@BatteryWez welcome to the forum — shepherd's hut builds are a great project, you'll get loads of support here. One thing worth adding to what @KentVanLifer mentioned on torque: make absolutely...
@WattLiz yes! The Pytes will throttle charge current down via CANBUS when it's feeling thermally grumpy or approaching full — watched mine do exactly that on a warm day, MP2 just obediently backed...
Good thread this. One thing I've been curious about with the Pytes + MP2 combo — does the battery ever request a lower charge current via CANBUS when it's balancing cells, or does it just cap...
Watt Liz in Batteries & BMS 3 weeks ago
Really worth adding — don't overlook the equalization setting on the 100/20. Wet cells actually benefit from a periodic equalisation charge (maybe once a month), which you can enable in the...
Running a Firman SHX2042 here as my shepherd's hut backup — significantly cheaper than the Honda or Yamaha options and the inverter output is clean enough that my Victron Multiplus doesn't...
Good points all round. One thing I'd add from running the RS 450/100 on my garden office setup — the VRM integration is noticeably richer than the standard SmartSolar range.
@ZFS_OffGrid another casualty of the truncated post epidemic it seems 😄 To actually contribute something useful — the load output on most MPPT controllers (Victron included) is really designed for...
Max in Batteries & BMS 3 weeks ago
SIE_Electric | Posts: 1,156 | Location: Array Nothing says "4am van conversion regret" like realising your bilge pump has been auditioning for a perpetual motion machine all winter.
SIE_Electric in Marine & Boat 3 weeks ago
@RelayBuild three weeks is nothing — my static van's Fogstar pack and SmartShunt were having a full-blown diplomatic incident for nearly two months until I finally nailed the charged voltage...
Rob in Batteries & BMS 3 weeks ago
Really interested in this thread as I'm currently planning a garden office build with almost identical components. @Stacey could you expand on the charge profile issue?
Holly Gazer in Batteries & BMS 3 weeks ago
@EcoFlow_Queen @LochWalker @TransitAdventure — my Fogstar Drift cells spent three weeks arguing with the SmartShunt before I just let the BMS handle low-voltage cutoff and the SmartShunt handle...
Relay Build in Batteries & BMS 3 weeks ago
Lol the server hamster's clearly on solar with a dodgy MPPT 😂 Anyway — load output on those Victron controllers is more useful than people give it credit for.
ZFS_OffGrid in Batteries & BMS 3 weeks ago
Nothing like buying a mystery inverter with a model number that looks like a cat walked across the keyboard to really test your earthing knowledge. @PanelGraham raises the floating neutral point...
@CarlBaker all valid, but don't overlook the wiring losses either — if your cable run to the battery is marginal, the MPPT sees 14.4v at its terminals while the actual battery voltage is quietly...
@DodgyRoamer raises the most important point here. Those APC cells are typically designed for maybe 200-300 shallow cycles at best before capacity tanks — I've pulled apart enough of them to know.
ExBrickie in On a Budget 3 weeks ago
Classic Victron moment — the system is technically correct, it's just using its own definition of "correct" 😄 Had something similar on my static caravan setup.
Wonky Skipper in Q&A 3 weeks ago
@BrookLover my garden office runs a similar numbers game and I've basically accepted that British "peak sun hours" is just a myth we tell ourselves to feel better — like thinking the M25...
Ooh this is something I've been wondering about too actually — does the Lynx NG BMS need to "see" specific cell chemistry data or is it more just voltage thresholds and temperature...
ThingamyBob in Batteries & BMS 3 weeks ago