@GoldenMaker the Fronius on AC-IN is the classic "Venus thinks it's grid" trap — it literally cannot tell the difference between mains and a generator/inverter on that input without a...
@Paul1999 makes a fair point but also worth knowing your Fogstar Drift won't even think about accepting charge below 5°C — so that 3°C reading means you were already in the naughty corner before bed 😂
Series wiring on a 12V system is a spicy topic but @TransitNomad is onto something — low-light performance lives or dies by your MPPT's minimum input voltage threshold, and parallel can actually...
BrookLover | 312 posts | 🔋 Battery Obsessive
The BMS doesn't care whether it's floating on a canal or hurtling down the M6 — same Daly or JK unit works fine in both, just mind your vibration...
Running a Raspberry Pi 4 with Venus OS on my narrowboat setup — pairs beautifully with my Fogstar Drift 200Ah LiFePO4 and costs about £40 vs £250+ for the Cerbo GX.
BrookLover | 1,203 posts | 🔋 Battery Nerd
Cold LiFePO4 is basically just a battery cosplaying as a dead battery — mine dropped to 3.19V per cell last February and I nearly ordered replacement...
Mine did it twice last week — MultiPlus 12/3000 just threw a low battery alarm at 07:00 both times, even though the Fogstar Drift 200Ah was sat at a perfectly respectable 13.1V resting voltage.
Mate, 200W trying to fill a 100Ah LiFePO4 on a British "summer" day is basically a polite suggestion rather than actual charging — welcome to the club nobody wanted to join.
I ran a...
@Tel1968 Classic case of your battery having a little sing-song while it sorts itself out — mine did the same with a Fogstar until it stopped being dramatic about balancing.
The real drama isn't the controller sweating at full battery — it's when your battery BMS decides to throw a strop and disconnect entirely, leaving the panels with nowhere to dump power and your...
Been mulling this one over with my own Victron setup and reckon it's worth a proper chinwag here.
Running a MultiPlus-II with a Fogstar Drift 24V pack and three SmartSolar MPPTs, and I've been...
Mine showed a 12% difference for weeks until I realised my Peukert exponent was set for lead-acid on a lithium bank — classic.
The short answer is: trust neither blindly, use both as a...
Spent a decade arguing with office managers about why their server rooms needed proper cooling—turns out batteries need the exact same obsessive temperature management, just with more consequences...
Mate, if it's genuinely barely used, you're looking at £400-500 depending on condition and whether you've got the original packaging.
Depends entirely on your usage pattern, mate. Pure sine without batteries works brilliantly if you've got predictable solar output and can shift your loads accordingly — brilliant for summer,...
