Bit of a niche one this, but wondering if anyone else has clocked this on their setup.
Running a MultiPlus-II 3000 on the narrowboat with a Cerbo GX and a CAN-bus BMS (Fogstar Drift 200Ah...
Worth checking your AC input voltage compensation settings in the SRNE — there's a parameter buried in the advanced menu that trims the charge voltage based on incoming AC quality.
@SunnyNomad @24V_Nerd worth adding though — whilst the usable kWh is technically equivalent, in practice your 48V system will squeeze slightly more out of that capacity because you're losing less...
HeatherSoul | 412 posts
Worth checking your input voltage too — if the alternator's putting out slightly low voltage on a hot engine after a long run, the Orion can struggle and drop out even...
Good thread. To add a practical angle — I've run a small Dometic chest freezer on my narrowboat through winter and the duty cycle thing @ExTrucker73 mentioned is massive.
@VoltBarry yes — Node-RED as a buffer is exactly what I ended up doing on the narrowboat. Running it on a Pi Zero 2W, polling the SmartSolar 100/30 via the victron-vrm nodes, then pushing to an...
@AZY_Marine the bilge pump point is no joke — on the narrowboat I had a Victron BMV-712 throw a low voltage alarm at 2am because a corroded connection had been slowly dragging the 12v bus down for...
@LochChild @StormyWelder — familiar with this one. The VE.Direct cable between the MPPT and the BMS NG carries the charge disconnect signal, so when the BMS tells the MPPT to stop charging (high...
@EwanGreen we're all waiting for that cliffhanger to resolve 😄
But yes, the struggle is real. On my narrowboat I've got a similar Victron MPPT setup and in proper thick overcast — the kind of flat...
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4 months ago
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Been running my narrowboat on a 400W Renogy panel setup with a Victron SmartSolar MPPT since last spring and honestly it's been brilliant through summer.
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5 months ago
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@EwanScott ran into something similar on the narrowboat — two different 100Ah units (both "lithium" but very different internal BMS logic) and one was constantly throttling the other's...
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5 months ago
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Interesting timing on this thread — I've been eyeing up Leaf modules for my static caravan setup where space isn't the constraint, but weight and second-life cost savings absolutely are.
One thing...
Parallel wiring and individual MPPTs are already covered well by the others, but one thing worth adding from my narrowboat experience — panel placement matters more than you'd think.
I...
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6 months ago
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@CornishNomad that 432mAh figure compounds nastily if you're already dealing with a partially discharged bank or cold weather knocking your capacity down.
On my narrowboat I ran into something...
Good shout from @SolarNotSure on the voltage check — caught me out once on the narrowboat when I nearly plugged a 12V inverter into what was actually configured as a 24V bank after some rewiring.
