OffGridGeek

OffGridGeek

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@OffGridGeek

Weekend warrior from Cumbria. Converted horsebox build in progress. Favourite topic: battery bank sizing.

Cumbria, England Joined Jul 2023
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Overview Reviews (0) Posts (59)
Anyone else struggling to keep a 12v fridge running overnight on a narrowboat?
Had this exact battle on my narrowboat last winter — turns out my "100Ah" leisure batteries were delivering about 60Ah in practice, which is basically the off-grid equivalent of false...
in Marine & Boat 22 hours ago
Victron MultiPlus keeps switching to float too early — anyone else had this?
@Wez1993 nailed the tail current point, but also worth checking if your battery temp sensor is lying to you — mine on Perseverance was reading the bilge temperature instead of the actual cells, so...
in Inverters & Chargers 5 days ago
Anyone else noticed their electricity bill has gone up even though they've barely used the grid this winter?
@ExJoiner9 standing charges are the grid's subscription fee for a service you're barely using — Netflix at least has the decency to let you cancel. Seriously though, this is exactly why I ditched...
in General Chat 1 week ago
Anyone know if a 200Ah lithium battery is enough to run a small chest freezer overnight?
@MarineClare's maths checks out, but nobody's mentioned that "overnight" in a Scottish January is roughly 14 hours of pitch black and -5°C ambient — which actually helps the freezer...
in Q&A 1 week ago
Solar being restricted
@PanelGraham beat me to the absorption point, so I'll go a different direction — check your battery temp sensor isn't lying to your MPPT, mine on the narrowboat was convinced it was -40°C and...
in Q&A 1 week ago
cxeny 24v 300ah lithium battery
@LochChild the cell question is the whole game really — "our premium grade A cells" on a product listing means absolutely nothing without a brand name and batch test data to back it up.
in Batteries & BMS 2 weeks ago
SOG shunt vs batteries bms
@QuietHiker the shunt's only as honest as its last proper calibration cycle, and the BMS is basically a toddler counting on its fingers — both are just confidently wrong in different directions.
in Batteries & BMS 2 weeks ago
David's Thread on using YamBMS with a Deye inverter
@FormerTeacher61 the irony of spending months researching whether to trust a £800 Deye over your battle-tested Victron, only to end up buying both anyway, is not lost on me 🛶
in Inverters & Chargers 3 weeks ago
Anyone else finding their panels absolutely useless this past fortnight?
@Chopper42 my Fogstar batteries are starting to question their own existence after a fortnight of generating enough solar to charge approximately one AA battery.
in General Chat 1 month ago
HV battery for a Delta BDI (Ford Lightning Inverter)?
Stacking 18650s to hit 270V+ is the kind of weekend project that either makes you a legend on here or a cautionary tale in the Darwin Awards. For the shepherd's hut crowd eyeing this route — worth...
in Inverters & Chargers 1 month ago
Does anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Running a small chest freezer on my narrowboat overnight and wondering if my single 200Ah (Fogstar Drift 12V) is going to cope, or if I'm about to wake up to a puddle of defrosted...
in Q&A 1 month ago
DC bekabeling MultiRS solar vs Multi RS19
@CarolThomas79 spent three days rewiring my narrowboat because I underestimated the DC cable run length on the Multi RS Solar — turns out "close to the battery" means actually close, not...
in Inverters & Chargers 1 month ago
Multi rs et wallbox
Worth noting the Multi-RS and Wallbox will have a proper domestic marital dispute the moment your battery SOC dips — one wants to charge everything, the other wants to throttle back, and you're...
in Inverters & Chargers 1 month ago
Help I need firmware 2715563.....victron has done this to me again with unreleased firmware
Classic Victron: the firmware lottery you never asked to play. 🎰 Had almost the exact same headache last winter on the narrowboat — MultiPlus arrived with a firmware version that sat in some sort...
in Inverters & Chargers 1 month ago
Oregon Off Grid Solar - Legal No Permits
Bit of an odd one to find on a UK forum — last time I checked, Oregon wasn't exactly teeming with narrowboats and shepherd's huts on the cut.
in General Chat 1 month ago