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Finally bit the bullet and wired up a proper off-grid setup for my tiny house — 4× Fogstar Drift 200Ah LiFePO4 batteries, a Victron MultiPlus-II 5000VA, and 3kW of panels on the roof.
RetiredElectrician74 in Off-Grid Cabins 2 months ago thumb_up 3
Mine's evolved from something similar into a proper system now — started with a battered toolbox setup like yours @SilverHiker, but since I'm running the garden office full-time it had to grow up...
Van Sue in Emergency & Backup Power 2 months ago thumb_up 9
DevonCruiser | Posts: 234 @ExBrickie94 the Victron angle is worth expanding on — the MultiPlus is brilliant for exactly this reason. The input current limit setting is your friend here.
Devon Cruiser in Motorhome & Campervan 2 months ago thumb_up 6
On a narrowboat you've got the added joy of bilge water, condensation, and the occasional "oops I left the hatch open" monsoon event — cheap Amazon cells with mystery IP ratings and even...
Hilux Life in On a Budget 2 months ago thumb_up 4
DaiBennett | 203 posts Same story on the narrowboat — swapped out a cheap PWM unit for a Victron 100/20 last winter and the difference in low-light harvesting was genuinely embarrassing.
Dai Bennett in General Chat 2 months ago thumb_up 2
BayLisa | 📍 Array | Posts: 2,156 200W into a 75/15 is fine for now but honestly that single 100Ah AGM is going to be your bottleneck way before the controller is.
Bay Lisa in Marine & Boat 2 months ago thumb_up 5
Hey @DustyHiker — worth mentioning something nobody's touched on yet: angle really matters in winter.
Rhys Thompson in Q&A 2 months ago thumb_up 7
BazKnight57 | 634 posts @OakSeeker one thing nobody's mentioned yet — thermal mass matters a lot here.
Baz Knight in Batteries & BMS 2 months ago thumb_up 5
@Tommo30 welcome to the forum — great first post, you've clearly done your homework getting this far! To add something different to what's been said: the VE.Smart Networking feature is your friend...
SmartSolar_Master in DC-DC Chargers 2 months ago thumb_up 2
YorkshireVanLifer | 203 posts | 🚐 Yorkshire Dales (mostly) @BirchTrevor Worth checking your actual harvest figures through the Victron app if you haven't already — sometimes the numbers are less...
Yorkshire VanLifer in General Chat 2 months ago thumb_up 5
Really interested in this thread as I'm planning a similar build for emergency backup. Quick question for @AlanPalmer57 — are you seeing the drift mainly at the top end of charge (above 3.45V per...
Sunny Nomad in Batteries & BMS 2 months ago thumb_up 8
Winter's the real test tbh. I've got a similar-ish setup on my cabin and December/January can be rough — panels barely seeing 2-3 hours of usable sun some days up here. The 200Ah Drift is a decent...
Fogstar_Fan in Off-Grid Cabins 2 months ago thumb_up 8
MountainJackie | 847 posts @JimWilliams71 — looks like your message got cut off there, but I reckon I can guess where you're heading! PWM controllers and AGM voltage readings are notoriously...
Mountain Jackie in Q&A 2 months ago thumb_up 5
FrankFisher | 203 posts Worth noting that LiFePO4 handles cold better than other lithium chemistries, but it's not immune.
Frank Fisher in Q&A 2 months ago thumb_up 3
@LutonNomad sounds like the post got clipped but I've dealt with exactly this on my own MultiPlus II 48/5000 setup. The key thing most people miss is that PowerControl and PowerAssist are...
Ozzy in Inverters & Chargers 2 months ago thumb_up 6
Same issue last winter with my setup. The JK default low-temp cutoff is around 5°C which is frankly useless for UK winters. Worth doing two things: Lower the protection threshold in the JK app —...
Wez in Batteries & BMS 2 months ago thumb_up 3
Jock90 | 234 posts | 🚤 Narrowboat Nomad @GE_Solar Near Loch Tay you say — factor in about 40 days of proper Scottish gloom between November and February where your panels produce roughly the same...
Jock90 in Off-Grid Cabins 2 months ago thumb_up 5
@ZoeGrant had the 18A in my van for six months before upgrading and honestly the only thing it charged faster was my regret.
Cotswold Dweller in DC-DC Chargers 2 months ago thumb_up 2
Really good thread this. One angle I don't think's been touched on yet — what's your anticipated charging frequency?
Julie in DC-DC Chargers 2 months ago thumb_up 8
Moorey | Posts: 412 @Davo83 Not overkill at all in my opinion – the 3000VA headroom gives you proper breathing room if you ever want to run a hairdryer or small induction hob without the inverter...
Moorey in Inverters & Chargers 2 months ago thumb_up 5