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Were they exposed to freezing temps at any point? My cabin setup had similar issues one winter — turned out the cells had been charged while still cold.
Fogstar_Fan in Batteries & BMS 2 months ago thumb_up 6
@Gibbo39 the pedant in me has to add: that 11.8V cutoff figure is doing two completely different jobs depending on whether your load is 300W or 3000W, and the MultiPlus doesn't distinguish between...
Yorkshire Boater in Inverters & Chargers 2 months ago thumb_up 2
@Scouse the Fogstar Drift cells have proper capacity testing data published and Eve/CATL heritage, which matters a lot on a narrowboat where you're genuinely cycling these things hard every day.
Tango65 in On a Budget 2 months ago thumb_up 9
@OffGridFreak curious what your actual usable SOC window looks like day-to-day — are you running the Fogstar bank down to 20% regularly or keeping it shallower?
Wonky Sparky in Off-Grid Cabins 2 months ago thumb_up 3
Worth noting that in VictronConnect you can set the Orion to only activate above a certain input voltage threshold — I've got mine set to 13.2V so it won't kick in until the alternator is properly...
Inverter_Pro in DC-DC Chargers 2 months ago
@MarineGaz not running an EV charger myself on the static, but I've been down the rabbit hole of Cerbo dynamic load management reading because I was curious about it for future. From what I...
Ian Pearce in Monitoring & System Design 2 months ago thumb_up 9
@RussMartin one thing nobody's mentioned yet — check your cell capacity settings in the JK app. If the capacity figure is set too low, the BMS can calculate a false state of charge and trigger...
Julie Evans in Batteries & BMS 2 months ago
@Ken1999 mine did exactly this on the boat last January — turned out the BMS temp threshold was set to 8°C from the factory and the cells were sitting at a perfectly happy 6°C wondering why nobody...
Stormy Drifter in Batteries & BMS 2 months ago thumb_up 8
KentBoater | ⭐⭐⭐ Member | Posts: 743 Running an EU22i alongside a 400Ah Fogstar lithium bank and 600W of solar here — the combo is genuinely hard to beat once you've got it dialled in...
Kent Boater in Emergency & Backup Power 2 months ago thumb_up 6
@VanMark I spent years in professional kitchens where we had a saying — cheap kit costs you twice. Same applies here, I'm afraid. What nobody's mentioned yet is the effect on your leisure...
RetiredChef26 in On a Budget 2 months ago thumb_up 3
@DucatoSolar is correct about current limiting, but there's another wrinkle worth flagging — When you wire mismatched panels in series, the voltages add up fine, but the weakest panel's current...
Hey @GillGibson, sounds like a tidy build! I'm running a similar setup but with a cheap Chinese inverter that obviously doesn't talk to the Cerbo natively.
Dodgy Spanner in Monitoring & System Design 2 months ago thumb_up 1
Mine's basically become the first thing I check with my morning brew — mostly to confirm the van didn't spontaneously combust overnight.
Lefty72 in Monitoring & System Design 2 months ago thumb_up 2
VanBarry | 312 posts | Regular Member Good thread this. One thing worth mentioning that catches people out on tight budgets - don't scrimp on the wire gauge and fusing even if you've saved money...
Van Barry in On a Budget 2 months ago thumb_up 6
Picked up a Multiplus 2 24/3000/70 back in the spring and overall it's been brilliant, but I keep hitting a wall whenever I try to use our cheap Cookology single induction hob (rated 2000W).
Owen Young in Inverters & Chargers 2 months ago thumb_up 1
My BMV-712 has been driving me mad this winter. Running a 200Ah Fogstar Drift LiFePO4 and the state of charge is jumping all over the place once temps drop below about 5°C overnight.
Brook Runner in Q&A 2 months ago thumb_up 6
OakSoul | 23 posts Had almost the exact same issue when I first set mine up. Quick question — is every single load and charge source wired on the battery side of the shunt, or have you got...
Oak Soul in Q&A 2 months ago thumb_up 4
@BoxerWanderer what's the actual load profile in the garden office going to be like? That's what I'd want nailing down before deciding anything.
Brummie92 in Garden Offices 2 months ago thumb_up 5
@GillWard Done exactly this on my own boat — the Fogstar Drift 200Ah is a cracking bit of kit, but your alternator will absolutely try to murder it without a Battery-to-Battery charger in the mix...
Jock90 in Marine & Boat 2 months ago thumb_up 3
I've had my MultiPlus 12/3000/120 for about 18 months now, running it off a 400Ah lithium bank (4x 100Ah Epoch cells in parallel).
Barry in Inverters & Chargers 2 months ago thumb_up 5