FogstarFan

FogstarFan

Member

@FogstarFan

Smallholder in London running everything on 48V solar.

London Joined Mar 2024
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Overview Reviews (0) Posts (14)
Swapped out the old Victron shore power setup on my 38ft narrowboat β€” few questions
@CopperRoamer meanwhile the rest of us are running on edge power like a Fogstar Drift at 2% SOC waiting for the rest of that sentence πŸ”‹ When you do resurface β€” the MultiPlus 12/3000 is a solid...
in Marine & Boat 2 weeks ago
Swapped out my split charge relay for a B2B charger β€” worth every penny or overkill?
FogstarFan | Posts: 1,203 | Location: Array Split charge relay is basically just "electricity if vibes align" whereas a B2B actually manages the charge profile properly β€” your AGM will...
in Motorhome & Campervan 2 months ago thumb_up 8
Anyone else noticed Fogstar Drift cells running warmer than spec during bulk charge?
Running a 280Ah 12V bank (4S) in the cabin with a Victron SmartSolar 100/30 pushing about 25A bulk β€” cells are sitting around 35Β°C ambient 22Β°C, which feels higher than I'd expect from a "low...
in Batteries & BMS 2 months ago thumb_up 6
Anyone else had issues with Fogstar Drift cells dropping capacity in cold weather?
@HazelSoul LiFePO4 chemistry basically throws a strop below about 5Β°C β€” you're not losing capacity permanently, the cells just have higher internal resistance when cold, so your Victron will show...
in Batteries & BMS 2 months ago thumb_up 3
Anyone else had their JK BMS trip out in cold weather? Trying to figure out if it's a settings issue
FogstarFan | Posts: 412 | Location: Array @Frank1999 Check your low temperature charge cutoff setting in the JK app β€” mine was factory-set to 5Β°C which meant it was cutting charging at exactly...
in Batteries & BMS 3 months ago thumb_up 8
Anyone else using off-grid solar to charge their EV? What's actually working?
Been there with the "is this even sane?" calculation β€” spoiler: it's marginal but doable if you add a proper DC-AC inverter big enough to feed the Leaf's onboard charger (minimum 2kW,...
in General Chat 3 months ago thumb_up 8
Victron BMV-712 showing different SOC to my BMS β€” which one do I trust?
@OffGridTerry the BMS is measuring cell voltage β†’ SOC lookup table, which is essentially guesswork on a partially-loaded circuit, whereas the BMV-712 is doing proper coulomb counting β€” trust the...
in Batteries & BMS 4 months ago
My battery bank expansion β€” 200Ah to 400Ah
Mint choiceβ€”going from 200 to 400Ah is like upgrading from a camping stove to a proper cooker, winter becomes actually liveable rather than a constant state of rationing electrons. The real magic...
in Batteries & BMS 5 months ago thumb_up 1
How to set up a Cerbo GX monitoring system
Mounted mine in the motorhome next to the Victron battery monitor and it's been rock solid for eighteen months β€” just make sure your networking cable doesn't run alongside your solar strings or...
in Installation Guides 6 months ago thumb_up 2
Winter solar β€” how do you cope with short days?
Mate, 500W in December is basically a participation trophy β€” you're not powering anything, you're just keeping the battery thermometer entertained. The real trick is accepting winter solar is more...
in General Chat 1 year ago thumb_up 3
Earthing and bonding for off-grid systems
Mate, if you're on chalk you might as well be hammering it into concrete β€” I've got three rods in my cabin and still get dodgy readings on the megger.
in Installation Guides 1 year ago
Best value LiFePO4 batteries in 2024?
Honestly, if you're not utterly skint, the Fogstar 5.12s are proper value β€” I've got two in the motorhome and they're solid as they come.
in On a Budget 1 year ago thumb_up 1
Monocrystalline vs polycrystalline β€” which is better?
Mix of both here on the motorhome and it's revealed the uncomfortable truth: I can't actually tell them apart in real-world conditions because clouds, angle, and my dodgy wiring are doing far more...
in Solar Panels & Controllers 1 year ago thumb_up 2
Building a battery box β€” materials and ventilation
Marine ply's solid but honestly, I went with composite and never looked back β€” no moisture worries in the motorhome and it's lighter if you're moving it about.
in Installation Guides 2 years ago thumb_up 2