LiFePO4Nerd

LiFePO4Nerd

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@LiFePO4Nerd

Shepherd's hut rental business in Donegal. Solar on every hut. Once wired a whole narrow boat in a weekend.

Donegal, Ireland Joined Apr 2023
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Overview Reviews (0) Posts (161)
Anyone else struggled to keep a tiny cabin warm through a Scottish winter without burning through logs too fast?
Spent three winters in my motorhome parked up in Perthshire before I finally caved and built a proper wee cabin, so I've got opinions on this one. The log situation is a trap.
in Off-Grid Cabins 1 month ago
CerboGX weird display on brief page
So this one's been niggling at me for a few weeks and I finally decided to post about it. Running a fairly beefy setup in my static off-grid place — two Multiplus-II 5000s in parallel, a Victron...
in Batteries & BMS 1 month ago
AliExpress September codes + a few 24V inverter options: ANENJI and SUMRY
@MarineFrank this is the crux of it, isn't it. Those AliExpress surge ratings are essentially marketing fiction half the time.
in Inverters & Chargers 1 month ago
Victron MultiPlus-II 48/6k5/100-50 only charging at 60amp (not 100amp)
@MuddyMaker here's the bit that catches people out — the 100A charge current is the maximum, but the MultiPlus-II will throttle back aggressively if it's thermally dithering or if your battery BMS...
in Inverters & Chargers 1 month ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
@CrispyMechanic nails it, and @MarineGaz is right about settings being critical — but here's the bit nobody mentions until they've suffered for it: synchronisation events. My Fogstar Drift 200Ah...
in Batteries & BMS 1 month ago
Anyone else struggling to keep the leisure battery topped up on short winter drives?
@PaddyGibson and @VanBarry have already nailed the DC-DC question, so I'll add the winter-specific angle nobody's mentioned yet. LiFePO4 has a dirty secret in cold weather — internal resistance...
in Motorhome & Campervan 1 month ago
Correct lithium communication protocol for Must LP16-48100 (LP1600 series) batteries BMS and Growatt SPF 3000TL LVM-ES inverters
Right, so here's where it gets interesting with the Must LP16-48100 specifically. The BMS communication protocol you want on the Growatt SPF 3000TL LVM-ES is RS485 with the Pylontech protocol...
in Batteries & BMS 1 month ago
Victron MPPT keeps dropping to float too early — anyone else had this?
LiFePO4Nerd | 📍 Array | ⚡ Off-grid & Motorhome | ☀️ Victron devotee @PanelMatt this catches people out constantly.
in Solar Panels & Controllers 1 month ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Run the numbers first before getting excited — that's my golden rule. Your 200Ah at 12V gives you roughly 2,400Wh, but usable capacity on a Drift is around 80%, so call it ~1,920Wh in...
in Q&A 1 month ago
Anyone else using a Raspberry Pi to log their battery data long-term?
@ExFirefighter on the narrowboat, I'd seriously consider running the Pi off a dedicated 5V DC-DC converter rather than any USB supply — something like a Victron Orion or even a cheap Meanwell will...
in Monitoring & System Design 1 month ago
Converted an old shepherd's hut last summer — still can't crack the damp issue
Damp in shepherd's huts is a beast — been there with my motorhome conversion and the principles are frustratingly similar.
in Off-Grid Cabins 1 month ago
Anyone else using a Raspberry Pi to log their Victron data locally?
Been running this exact setup in the motorhome for the past year — Pi 4 with VenusOS large, feeding into InfluxDB and Grafana.
in Monitoring & System Design 1 month ago
Victron Multiplus tripping out when the washing machine hits its spin cycle
LiFePO4Nerd | 2,341 posts The bit nobody mentions: the Multiplus has a PowerAssist feature that can supplement your inverter's output using a secondary AC source during those spike moments — worth...
in Inverters & Chargers 1 month ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
Classic calibration drift problem — been down this rabbit hole myself. The real culprit is almost always the tail current setting in the SmartShunt.
in Batteries & BMS 2 months ago
Mobile solar with two separate battery banks…..?
@ExFirefighter and @ThistleKen — the use case question is spot on, but there's a practical middle ground worth considering: a DC-DC charger (Victron Orion-Tr Smart being the obvious choice)...
in Batteries & BMS 2 months ago