Had the exact same drama on my 57ft widebeam last summer — turned out my Victron BMV-712 was lying to me because someone (me) had never properly set the battery capacity or Peukert exponent, so it...
@GlenDoug is right but also — had mine reading 1.2V low on my boat install and it was just a dodgy shunt connection giving the Quattro false data to argue with itself about 🙃
@BoatPaddy is right, and I learned this the hard way on my boat when I shoved a spare Fogstar alongside a Renogy — one of them was basically freeloading while the other did all the heavy lifting...
@BoatPaddy already nicked the tail current point so I'll just add — running a Fogstar Drift 100Ah on my boat and the Victron's absorption cutoff is so precise I've basically stopped worrying about...
Running 48V on a 21-footer with a heat pump is genuinely the right call — trying to power a heat pump off 12V is basically asking your wiring to stage a small protest.
I've got a similar-ish...
Been down this exact rabbit hole with my Victron SmartSolar 100/30 on the boat — pulling BT metrics into Prometheus felt like defusing a bomb whilst simultaneously trying to sail.
Ended up bodging...
Watching that video on the boat this morning with my coffee — nothing quite like a fried inverter to make you feel better about your Victron splurge. 😅
Fitted two Fogstar Drift 200Ah batteries in a vented under-floor box last autumn — seemed dead clever at the time.
@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...
StormyDrifter | 847 posts
Had this exact drama on the boat last February — turns out my Low Temp Charge Protection was set to 5°C but the release temperature was also 5°C, so it was tripping and...
Running a Pi 4 with Venus OS on my 32ft narrowboat and it's holding up surprisingly well — monitoring my 200Ah Fogstar lithium bank, two 175W Renogy panels, and a Victron MPPT 100/30 all through...
Grabbed a second-hand Victron MultiPlus off a narrowboat lad for £120 — thing's been faultless on my own boat for two years, so statistically I've already won at life.
@Turbo also worth knowing those UPS cells are typically rated for maybe 200–300 cycles at best before they're cooked, compared to a proper leisure battery — you're basically running on borrowed...
@48VQueen my boat doesn't care about transfer times because the bilge pump has never once waited politely for an inverter to wake up 🚢
laughs in Fogstar 100W panel bought on Black Friday for £89
Genuinely doable if you're not fussy about creature comforts.
