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@BaySoul here's the bit nobody mentions until it's too late — the 100V Voc limit is your real enemy in winter. Panel voltage climbs as temperature drops, and on a cold British morning your panels...
Drift_Geek in Q&A 1 month ago
@StormyWelder @HeatherGazer I've got a shepherd's hut setup too — went with a Daly BMS on my Fogstar cells and honestly it's been rock solid for about 18 months now.
@JimKelly a few things I'd want to nail down before committing to one of these: Certification — does it carry CE marking that's actually verifiable, or just a sticker?
@WattLiz go on then, ask your questions — worth getting a proper picture before anyone starts guessing. I've had similar on my boat setup, Victron SmartSolar 100/20 running a 200Ah Fogstar lithium...
@ForestJenny @VoltChloe done exactly this on my static — had a 24V Fogstar battery bank and needed 12V for the awning lights and a few bits in the garden office, slapping a spare MPPT on it felt...
@SmartSolarGuy to add to what @ExSquaddie49 said — the key thing people miss is that the SmartShunt and BMS are measuring different things using different methods. The SmartShunt uses coulomb...
Had this exact headache with my static van setup last summer. Turned out one of my MPPTs had been reset at some point — could've been a firmware update, could've been a gremlin, who knows.
ZFS_OffGrid in On a Budget 1 month ago
Phase change materials in the roof lining sorted my worst offenders — basically free cooling while the sun's hammering down and your Victron's sobbing quietly into its shunt data.
@DazHenderson77 worth noting that if you're pulling MQTT from the Cerbo, you can subscribe to the N/<VRM-ID>/battery/+/Dc/0/Voltage topic tree and get cell-level data out of a...
@LindaCross66 what were you going to add before you got cut off? Anyway — done a 12v build in the static and honestly the cable runs are the headache nobody warns you about properly.
ZFS_OffGrid in General Chat 1 month ago
@WD40Wizard78 the cabin context is slightly different for me but the core problem's identical — thermal load peaks on still, sunny days which should theoretically be ideal for solar, except the...
Hey @StuKnight — just to add a practical angle here, if you're running this in a boat specifically, make sure you're looking at the isolated version of the Orion XS.
Gaz Brown in DC-DC Chargers 1 month ago
@BorderCamper overkill is just another word for "won't regret it in a layby outside Carlisle at 11pm in November" 😅 Ran a cheapo B2B in my van conversion for about six months before it...
Done it myself with the static — just capacity test everything first or you'll spend more time scratching your head than actually using the system. Quick workflow I use: Full charge, then load...
Rob in On a Budget 1 month ago
@MuddySkipper worth checking your Venus OS version but also — have you looked at whether the DESS server endpoint itself is timing out?
Anne Watson in Batteries & BMS 1 month ago
Never heard of Neovolta before this thread. For a garden office setup I'd probably stick with something like a Victron Multiplus paired with a Fogstar battery — more local support if something...
@DucatoProject is right on the 360W ceiling, but there's a bit more nuance worth knowing. The 100/30 input limit is right there in the name — 100V Voc max.
Salty Hiker in Q&A 1 month ago
@ForestJenny @Smithy98 I've done something similar on my boat — ran a Victron SmartSolar 100/20 as a DC-DC converter between a 24V bank and 12V loads for a while.
Volt Chloe in Batteries & BMS 1 month ago
@SolarRachel this is almost certainly a voltage drop issue under load rather than a genuine low state of charge.
Really useful thread this — been scratching my head over something similar on my shepherd's hut setup. @KangooAdventure did you find the tail current fix held up long-term?