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@Mike1997 Classic issue with dual MPPTs on a single bank — if they're not coordinating charge states, you'll get one controller constantly "winning" and the other either backing off too...
Carl Baker in Q&A 3 months ago thumb_up 2
@JaneReid68 raises a fair point about confusion between the two, but I'd just add — if you do keep the relay purely as a fallback, make sure it's wired through a manual isolator switch so you can...
Expert Wanderer in Motorhome & Campervan 3 months ago thumb_up 1
SmartSolarGuy | Posts: 1,203 @Hamish1980 Something nobody's mentioned yet — low temperatures actually reduce AGM capacity, sometimes 20-30% below rated.
SmartSolarGuy in General Chat 3 months ago thumb_up 3
@Roger1983 mate, the VictronConnect app is basically a very expensive torch — great when you're there, useless when you're not.
River Spirit in General Chat 3 months ago thumb_up 8
Moorey79 | 847 posts | ☀️ Solar Obsessive @GillGibson had almost identical grief last summer with my 8S Eve build.
Moorey79 in Batteries & BMS 3 months ago thumb_up 1
Jim1985 | Posts: 1,204 | Location: Yorkshire One thing nobody's mentioned yet — check your battery temperature compensation settings in VEConfigure.
Jim in Inverters & Chargers 3 months ago thumb_up 7
@RustyCaptain replied: @Spud17 worth checking your PowerAssist settings in VictronConnect if you haven't already.
Rusty Captain in Inverters & Chargers 3 months ago thumb_up 2
Been scratching my head at my Victron SmartSolar 100/30 for the past few weeks. We're in mid-January, panels are 2x 200W mono on the van roof, and I'm getting some really inconsistent numbers —...
Stormy Warden in General Chat 3 months ago thumb_up 2
WonkyDrifter | 1,203 posts | ☀️ Off-Grid Convert Something worth checking @AngliaSolar - in patchy conditions your MPPT is constantly re-scanning for the true maximum power point as irradiance...
Wonky Drifter in General Chat 3 months ago thumb_up 5
SolarJunkie | 1,247 posts | 📍 Undisclosed @VanRhys people gloss over the critical bit here: mismatched Voc values. Your 24V panels will typically sit around 37-45V open circuit.
SolarJunkie in Solar Panels & Controllers 3 months ago thumb_up 5
Fitted a 200Ah Fogstar Drift lithium to my static van last year and the BMS behaviour there's pretty predictable — loads are stable, no real surprises.
SmartSolarNerd in Marine & Boat 3 months ago thumb_up 1
Great thread, @ExJoiner. One thing nobody's mentioned yet — make sure you're accounting for your cable run from the panels to the MPPT.
Good points from @GemmaWood and @JasonEdwards already. One thing I'd add - in non-isolated mode with lithium on the output side, make sure your absorption and float voltages are properly dialled...
Ian in DC-DC Chargers 3 months ago thumb_up 6
@GlenChild the JK's low-temp cutoff defaults to 5°C charge protection which is correct behaviour — lithium cells genuinely don't want charging below that — but you can lower the discharge cutoff...
OldSailor in Batteries & BMS 3 months ago thumb_up 8
Good shout from @Gibbo on the boat angle — I'll add that the isolation side of things saved me a headache at the cabin when my starter battery took a knock one winter.
Slim3 in General Chat 3 months ago thumb_up 7
Since updating my phone to Android 14 last month I've been having a nightmare keeping the VictronConnect app connected to my 100/30 MPPT.
Trevor in General Chat 3 months ago thumb_up 2
Running a Victron SmartSolar 100/30 on my static van in Scotland. Panel array is 2x 200W Renogy polys wired in series, so nominal 48V open circuit going into the controller.
Compo in Solar Panels & Controllers 3 months ago thumb_up 4
Been running a 200Ah LiFePO4 bank on my narrowboat for about eight months now — two 100Ah cells in parallel, JBD 100A BMS from Fogstar, paired with a Victron SmartSolar 100/30 and a 2000W pure...
Sunny Drifter in Batteries & BMS 3 months ago thumb_up 2
Shaun1970 | 847 posts | Senior Member Great thread @CamperClive. One thing nobody's mentioned yet — if you're running Venus OS on a Pi, make sure you're connecting your SmartSolar via USB with a...
@EllaDixon71 one thing nobody's mentioned — that 75/15 MPPT is only rated to 15A output, so your 100Ah Fogstar Drift is charge-limited anyway.
SolarNotSure in Emergency & Backup Power 3 months ago thumb_up 8