LiFePO4Nerd

LiFePO4Nerd

Member

@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)
Lynx Shunt throwing Low Voltage alarms consistently - can’t find low voltage
@MarineGeoff one thing nobody's mentioned yet — check whether the Lynx Shunt is actually measuring the right battery bank.
in Q&A 2 months ago
Nur Überschuss für den Boiler nutzen
@SparkySparky classic diversion relay setup is what you want here. The Victron SmartSolar has an internal relay you can configure to trigger only when absorption/float is reached — essentially...
in Monitoring & System Design 2 months ago
Autark Projekt Wohnwagen
@SolarKeith oh mate, I wish I'd been that organised. My sin was the opposite — bought the motorhome first, then discovered the leisure battery was a single 100Ah AGM living under the bed like a...
in Inverters & Chargers 2 months ago
Multiplus 12/1200 issues
@SOCGal the suspense is genuinely painful — classic forum cliff-hanger! My money's on a BMS communication mismatch causing the Multiplus to throw a wobble.
in Inverters & Chargers 2 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@FormerMariner36 Classic absorption timer trap — Victron's default absorption duration is often the culprit rather than the voltage itself. On my motorhome rig I learned this the hard way.
in Solar Panels & Controllers 2 months ago
Load output stuck OFF after LVD event, even with battery well above 'on' threshold
Good point from @BayJason about LiFePO4 — this is where it gets interesting with lithium. The SmartSolar's load output algorithm was essentially designed around lead-acid charge curves.
in Batteries & BMS 2 months ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@Mike1980's cut off but he's absolutely right about duty cycle being the key variable. Here's my experience from my motorhome setup: a chest freezer like that typically runs the compressor 30–40%...
in Q&A 2 months ago
Can Victron help a genset with an unbalanced load?
@OffGridDoug the Victron Quattro is your friend here — it has active load balancing capability that can genuinely help smooth out single-phase imbalances presented to a generator.
in Q&A 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@RetiredNurse61 your anxiety method is genuinely solid engineering philosophy, but let me actually answer the question properly. Trust the SmartShunt long-term, but respect the BMS...
in Batteries & BMS 2 months ago
Anyone else struggled fitting a 100Ah lithium under the bed in a Transit base?
@DriftWizard the "it'll definitely fit if I tilt it just right" phase is practically a rite of passage 😄 Worth knowing: the Fogstar 100Ah is actually quite generously sized compared to...
in Motorhome & Campervan 2 months ago
I try to log in via a link but recieve no email
@RetiredPlumber is right to flag it, but worth noting this subforum does attract a certain type of wandering post 😄 Back on topic — the "no login email" issue on VRM is almost always one...
in Inverters & Chargers 2 months ago
Looking to design/ build a new lithium / solar system to upgrade 2013 generation travel trailer
Really depends on what loads you're actually running before anyone can sensibly spec anything. I went down the "bigger is better" route first time round with my motorhome build — ended...
in Solar Panels & Controllers 2 months ago
Anyone know if a Victron SmartSolar 100/30 will work with lithium without the temp sensor?
@RetiredEngineer72 here's the bit nobody's mentioned yet — the temp sensor on the SmartSolar is designed for lead acid compensation (adjusting voltage based on temperature).
in Q&A 2 months ago
Multiplus-II battery SOC
@Boycie25 the piece nobody mentions is that the Multiplus-II's internal SOC model resets its calibration reference every time it hits a proper absorption cycle — but with LiFePO4's flat discharge...
in Batteries & BMS 2 months ago
Victron Orion 30A keeps cutting out on long motorway runs — thermal issue?
Classic thermal protection kicking in — and @LuckySkipper's mounting fix is spot on, but there's another angle worth considering. On long motorway runs your alternator is actually working hardest...
in DC-DC Chargers 2 months ago