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@QuietHiker had the same lesson on my narrowboat — compressor fridges are brutal on startup draw. We're talking 3-5x running current for that initial spike.
GafferTapeKing19 in Q&A 6 months ago
@WildMechanic @KenGraham — worth adding that the SmartShunt's Peukert exponent is frequently overlooked.
Spider12 in Batteries & BMS 6 months ago thumb_up 8
@JackHunt interesting setup — I'm running something similar on the narrowboat, four 175W no-names (Alibaba direct, even sketchier than yours) into a SmartSolar 150/35. Honest yield figures: panels...
OffGrid Tel in Solar Panels & Controllers 6 months ago thumb_up 4
@Chopper72 actually the opposite problem is more common — cold panels produce higher Voc than rated, sometimes dangerously so.
Island VanLifer in Q&A 6 months ago thumb_up 5
Great thread, this. @TorDweller one thing worth considering is the Victron Orion-Tr Smart 48/12 — it handles the 48V to 12V conversion nicely and has proper lithium charging profiles.
Lefty92 in Batteries & BMS 6 months ago thumb_up 1
Picked up a Victron SmartSolar 100/30 a few months back to pair with two 200W panels (wired in series, so roughly 40V Voc) on my static shed setup.
Alan Pearce in Solar Panels & Controllers 6 months ago thumb_up 3
Good shout from @Chalky38 on CVL — I'd extend that and check what your DVL (Discharge Voltage Limit) is being reported as via the DVCC screen on the Cerbo.
JYT_Solar in Batteries & BMS 6 months ago thumb_up 5
RockyMaker | 847 posts @GemmaFisher82 Short answer — ditch the split-charge relay if you're running a proper B2B.
CallumReid replied: @HeatherWalker Worth double-checking your AC1 ignore setting in VEConfigure — specifically the "Ignore AC Input 1" flag that can get triggered by certain assistant...
Callum Reid in Batteries & BMS 6 months ago thumb_up 4
Been through this exact saga on my narrowboat last winter — Multiplus II convinced it was "done" when the bank was barely tickling 80%. The thing nobody mentions: check your...
Boxer Camper in Batteries & BMS 6 months ago thumb_up 2
Gazza55 | 847 posts @LochWalker three days in a Scottish winter with no power would sharpen anyone's thinking pretty sharpish!
Gazza55 in Emergency & Backup Power 6 months ago thumb_up 3
@HalfAJob my Solis did the same thing in the motorhome — turns out the minimum battery voltage threshold was set so conservatively it was basically treating a half-full battery like it was on life...
Bay Soul in Inverters & Chargers 6 months ago thumb_up 3
SilverWarden | 412 posts Worth adding something I haven't seen mentioned yet — your inverter's AC output frequency shifting is your friend here.
Silver Warden in Q&A 6 months ago thumb_up 1
@Taffy62 one thing I'd add that hasn't been mentioned yet — double-check your AC input current limit in the VEConfigure settings.
Daily Dream in Monitoring & System Design 6 months ago thumb_up 3
@ExPostie86 nailed it — my garden office setup taught me that a compressor fridge without a battery is basically just a very expensive way to store slightly less warm food on overcast days.
Quiet Hiker in Q&A 6 months ago thumb_up 4
@BirchRunner not odd at all — I've been doing exactly this at the shepherd's hut for about 18 months. Key thing I found: don't bother without a proper surplus divert setup.
Liam Frost in General Chat 6 months ago thumb_up 2
Just upgraded my van setup to a 48V lithium bank (Fogstar Drift cells, 280Ah) specifically to feed a Type 2 EV charger on the driveway, and I'm trying to figure out if my 100/50 SmartSolar is...
Kangoo Build in Solar Panels & Controllers 6 months ago thumb_up 3
Yeah had this on my motorhome setup with a 75/15. Worth checking if you've got any other Bluetooth devices nearby competing for the connection — my issue turned out to be my Fogstar BMS and the...
Davo83 in Q&A 6 months ago thumb_up 4
Good points all round here. One thing I'd add that nobody's mentioned yet — if you're running a split charge relay or a DC-DC charger between your starter and leisure batteries, having the...
Trevor in Motorhome & Campervan 6 months ago thumb_up 4
Really glad this thread exists — my garden office build taught me floor insulation is everything 🙌 Going slightly off-piste but worth mentioning: if you're running any off-grid kit underneath...
Panel Kate in Garden Offices 6 months ago thumb_up 3