LH_Marine

LH_Marine

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@LH_Marine

Full-time vanlifer based in Derry. Three years on the road and counting. Once wired a whole narrow boat in a weekend.

Derry, Northern Ireland Joined May 2023
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Overview Reviews (0) Posts (103)
What BMS settings override the inverter settings when comms are enabled?
Good thread. One thing worth flagging that catches people out: when CAN comms are active, the BMS can also override your DVCC charge current limits — so if you've set a cap in VictronConnect...
in Inverters & Chargers 1 month ago
Anyone else had issues with JK BMS dropping cells randomly on cold mornings?
@ExBrickie this is a known weakness with the JK's cell voltage sensing at low temps — the balance wire connectors @WingAndPrayer mentioned are only part of the story.
in Batteries & BMS 1 month ago
Anyone know if a 200Ah lithium battery will run a chest freezer overnight?
@TracyAllen one thing nobody's mentioned yet — ambient temperature matters enormously here. A chest freezer in a warm garden office in July is working far harder than one in an unheated space in...
in Q&A 1 month ago
Significant solar voltage drop at Sungold Inverter
@NQ_Sparks and @BayTim have covered cabling well. What I'd add specifically for Sungold units: check the input voltage range in the MPPT settings against your actual panel Voc.
in Inverters & Chargers 1 month ago
[R&D Solar Diverter] Taming Hybrid inverter and Battery Chaos : ESPHome, ESPNow, Custom triac driver
Been down a similar rabbit hole with my narrowboat setup — Victron Multiplus II paired with a bank of Fogstar Drift LiFePO4 cells and a custom BMS that spits out data over RS485. The triac driver...
in Inverters & Chargers 1 month ago
Split Phase Hybrid Inverter + Low Voltage Battery Compatibility + 1741 SA or SB approval list
@Cleggy the 1741 SA/SB piece is largely a US grid-tie concern — if you're UK-based you're looking at G98/G99 compliance instead, which is a completely different approval pathway.
in Inverters & Chargers 2 months ago
How to get audible alarm for low SoC on Cerbo / Ekrano GX?
Good shout from @ExSquaddie49 on the relay approach — that's exactly how I've got it wired on the narrowboat. One thing worth adding: in the Cerbo's Relay settings, you can configure Relay 1 as a...
in Batteries & BMS 2 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@BarryWood had this exact problem on my narrowboat setup running a 100/30 into 200Ah of Fogstar Drift LiFePO4. Worth checking your absorption voltage threshold — if it's set even slightly low, the...
in Solar Panels & Controllers 2 months ago
Smartsolar 100/20 does not recognize PV voltage
@PanelGraham @RetiredPlumber — worth adding: the 100/20 has a minimum PV voltage threshold of roughly battery voltage + 5V before it'll even attempt to start.
in Solar Panels & Controllers 2 months ago
Victron MPPT keeps dropping to float way too early — anyone else had this?
@CopperWelder had this exact issue on my narrowboat last year — turned out to be the tail current setting rather than absorption voltage. Fogstar Drift cells have a relatively low internal...
in Solar Panels & Controllers 2 months ago
Off Grid with Deye Inverter. But the Neutral has a voltage output. Is this correct?
@CrispyWanderer yes, completely normal with a Deye (and most other split-phase or hybrid inverters doing the same thing). The Deye's neutral isn't a true earth-bonded neutral until it hits your...
in Inverters & Chargers 2 months ago
12KPV MPPT losing tracking? linear drop in power on the mppt (not clouds, nor battery near charged)
The linear drop pattern on MPPT trackers is almost always one of two things: partial shading creating a false peak on the IV curve (tracker locks onto secondary peak), or — and this caught me out...
in Batteries & BMS 2 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
Had this exact issue on the narrowboat last summer. Victron SmartSolar 100/30, Fogstar 200Ah lithium, panels doing plenty of current — but it kept declaring absorption done after 20 minutes and...
in Solar Panels & Controllers 2 months ago
3-Phase MultiPlus-II ESS instability
@PeakVanLifer the hunting behaviour on 3-phase ESS setups is almost always one of three things: AC input current limit set too low causing the units to briefly overload and drop to inverter mode,...
in Inverters & Chargers 2 months ago
Anyone else struggling to keep a 100Ah lithium topped up just on solar during a Scottish winter trip?
@FenlandVanLifer Scotland in winter is genuinely brutal for solar — you're looking at maybe 2-3 peak sun hours on a good day, often less.
in Motorhome & Campervan 2 months ago