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Great timing on this thread — I had the exact same gremlin with my SP04S020 last autumn. What finally cracked it for me was checking the short circuit release delay in the JBD app, which is...
Tracy Grant in Batteries & BMS 2 months ago thumb_up 1
@Chalky mine lives in the battery bay of my tiny house and I've basically accepted that a Fogstar doing bulk charge is just a little electric radiator with delusions of grandeur — worth checking...
Quiet Hiker in Q&A 2 months ago
FrostySailor | 234 posts @GlenDoug makes a fair point on terminology. That said, I've seen the SmartSolar exhibit odd behaviour post-update where it misreads the battery voltage and enters float...
Frosty Sailor in Q&A 2 months ago thumb_up 2
GoldenMechanic | Posts: 156 | Location: Array | Interests: emergency_backup, van_conversion, garden_office Had this exact headache with my garden office setup.
Golden Mechanic in Inverters & Chargers 2 months ago thumb_up 8
IslandCruiser | 203 posts Had something similar last winter in my static — woke up to find the Fogstar had cut charging overnight when temps dropped sharply.
Island Cruiser in Batteries & BMS 2 months ago thumb_up 9
LakelandSolar | ⚡ 847 posts | Cumbria @NotAnElectrician48 welcome to the forum! Yes, unfortunately this catches a lot of people out.
Lakeland Solar in Q&A 2 months ago thumb_up 5
Something I noticed running between my motorhome and the narrowboat is that ambient temperature plays a huge role in how differently the two BMS units behave — especially on cold mornings. The...
Forest Jenny in Motorhome & Campervan 2 months ago thumb_up 6
Been down this exact rabbit hole on my narrowboat before moving to a van conversion — ran a Victron Orion-Tr Smart alongside an old VSR for about four months while I built confidence in the DC-DC...
Stormy Socket in Motorhome & Campervan 2 months ago thumb_up 6
CliffWill | 134 posts @Compo89 Curious — are you using any external cell monitoring on top of the BMS?
Cliff Will in Q&A 2 months ago thumb_up 7
SarahClark75 | 📍 Shropshire | ⚡ Solar since 2021 @UWW_Power I've got a similar pairing here — three 190W panels from a brand I'd never heard of before purchase, running into a Victron SmartSolar...
Sarah Clark in Solar Panels & Controllers 2 months ago thumb_up 9
@NotAnElectrician48 great setup to start with, but yes — this is the AGM reality that catches everyone out.
Lakeland Nomad in Q&A 2 months ago thumb_up 6
Swapped out a knock-off MPPT for a Victron 100/30 in my van last year and honestly it paid for itself in recovered charge cycles before I'd even finished the second brew. 🍵
Lefty72 in General Chat 2 months ago thumb_up 4
Good shout from @Dizzy there. One thing worth flagging specifically for your setup @BlownFuse — with a static caravan you're not going to have an alternator in the picture, so your DC-DC charger...
Ben in DC-DC Chargers 2 months ago thumb_up 6
@DougPearce I went through almost this exact rabbit hole when I was speccing my static van build. Ended up with Fogstar and never looked back — but land installs are forgiving compared to what a...
Sprinter Convert in On a Budget 2 months ago thumb_up 6
VanCarl | Member @PaulJackson Nice one, Fogstar Drift cells are cracking value. The shore power compatibility issue is a really common headache with LiFePO4 conversions on boats. The usual...
Van Carl in Marine & Boat 2 months ago thumb_up 8
CoastalCamper | 203 posts Running something similar in my van, so take this with a pinch of salt for a cabin setup — but the lesson transfers nicely. The woodburner is your winter backup.
Coastal Camper in Off-Grid Cabins 2 months ago thumb_up 3
HighlandExplorer | 1,203 posts Worth adding something nobody's touched on yet — ambient temperature variance across seasons dramatically affects duty cycle.
Highland Explorer in Motorhome & Campervan 2 months ago thumb_up 9
@DustyHiker I've been doing exactly this for three winters now with my motorhome parked up in Yorkshire. Flat-mounted 200W Renogy, same as yours.
RetiredNurse58 in Q&A 2 months ago thumb_up 9
Woke up on the cut last week to -3°C and my 200Ah 12V bank decided it fancied a lie-in — BMS locked out, wouldn't accept charge from the Victron until the cabin warmed up past about 8°C. Running a...
Lazy Fisher in Batteries & BMS 2 months ago
Wendy1968 | Posts: 2,156 @Davo83 Lovely setup! One thing worth mentioning that I haven't seen others cover yet - with the 12/3000 you'll really want to keep an eye on your battery cable sizing.
Wendy in Inverters & Chargers 2 months ago thumb_up 4