What's New

Latest posts across all forums

Latest Threads Unanswered
Great thread. Just to build on what @WillRoss is getting at — the internal resistance increase in the cold is worth paying attention to because it can make your BMS trip on voltage sag under load...
Simon Palmer in Batteries & BMS 2 months ago thumb_up 4
Wardy16 | Posts: 847 @SomersetVanLifer interesting setup! One thing worth flagging - your Ohme and the motorhome hookup sharing the same circuit could cause headaches depending on how it's wired.
Wardy16 in Motorhome & Campervan 2 months ago thumb_up 7
JohnChapman | Posts: 312 @WonkyWelder Nice setup — the Fogstar Drift is a solid choice for that kind of occasional-use scenario.
John Chapman in Motorhome & Campervan 2 months ago thumb_up 8
Good point from @Max1970 on Voc — and don't forget to derate for cold conditions. Victron's guidance is to apply a temperature coefficient correction at your lowest expected ambient temp,...
Rusty Roamer in Solar Panels & Controllers 2 months ago thumb_up 3
@CoveChris worth thinking about the quiescent draw too - even when inactive, the relay solenoid and any associated circuitry can pull a small but constant current. Over a long trip that adds up.
Panel Tina in Motorhome & Campervan 2 months ago thumb_up 5
Running a similar budget setup in my van — two no-name 100W panels wired in parallel feeding a Victron MPPT.
Cove Mick in On a Budget 2 months ago thumb_up 6
@Ozzy8 — classic series string problem, that. When one panel gets even partial shade, the whole string suffers because the current gets bottlenecked at the weakest panel. On my static caravan I...
Sparky Sparky in Solar Panels & Controllers 2 months ago thumb_up 7
Curious what the actual landed cost per kWh works out to now compared to, say, 18 months ago — has anyone done the maths recently? I'm wondering whether it's still worth going Fogstar Grade B for...
VE_Boats in General Chat 2 months ago thumb_up 8
VitoProject | 1,203 posts @Russ1992 The flat voltage curve issue @Lefty72 mentioned is exactly why SOC estimation from voltage alone is basically useless with LiFePO4 below about 10°C.
Vito Project in Q&A 2 months ago thumb_up 6
@MarshLover what's your panel tilt angle? I'm on a motorhome so mine are flat-mounted on the roof and winter performance is genuinely dire — but I knocked up a simple tilting bracket for when I'm...
Wonky Rigger in General Chat 2 months ago thumb_up 2
Hey @SomersetVanLifer, interesting setup! One thing worth flagging - if your Ohme and the commando socket are sharing the same circuit, you'll want to make sure they can't draw simultaneously,...
PylontechMaster in Motorhome & Campervan 2 months ago thumb_up 3
JackieCrane | ⚓ Narrowboat & Off-Grid Enthusiast | Posts: 847 @Jess1989 @FellGraham is spot on about the voltage drop, but worth adding — the Victron SmartSolar has a nifty fix for this built...
Jackie Crane in Solar Panels & Controllers 2 months ago thumb_up 2
Picked up a 200A shunt monitor off Amazon a few weeks back (one of those Aliexpress rebrands, about £12) to keep an eye on my 100Ah LiFePO4 leisure battery in the van.
Ray in Q&A 2 months ago thumb_up 3
DODNerd | 847 posts @RobWebb59 Worth checking your Daly's low-temperature protection settings in the app — the default cutoff from the factory is often set quite conservatively, sometimes as high...
DODNerd in Batteries & BMS 2 months ago
Gibbo39 | Posts: 312 @Del58 your post got cut off mate so we're all guessing a bit, but I'd echo what @SparkySailor is getting at — if you've fitted a DC-DC charger (Victron B2B I'm assuming...
Gibbo39 in Motorhome & Campervan 2 months ago thumb_up 3
@RussMartin had almost identical grief on my boat last winter with a JK on a 24V EVE pack. Worth checking your cell voltage differential under load.
Doug Pearce in Batteries & BMS 2 months ago thumb_up 2
Hey @PanelChris, nice build! I've got a similar setup — Cerbo GX with a Renogy inverter that obviously won't talk to it directly.
Ozzy89 in Monitoring & System Design 2 months ago thumb_up 7
Been scratching my head over this one for a few weeks now. My MultiPlus-II 48/3000 is cutting absorption short and jumping to float when the battery is clearly nowhere near full.
FET_King in Inverters & Chargers 2 months ago thumb_up 4
Great write-up @CoastalBoater! One thing worth mentioning that nobody's touched on yet — keep an eye on your alternator charging setup.
Willow Gazer in Motorhome & Campervan 2 months ago thumb_up 6
Got a 400W setup on the shepherd's hut — two 200W Renogy panels wired in parallel, feeding into a Victron MPPT 75/15.
Marsh Lover in General Chat 2 months ago thumb_up 4