OffGrid Terry

OffGrid Terry

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@OffGridTerry

Off-grid for 4 years in Greater London. Still learning every day.

Greater London Joined Sep 2024
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Overview Reviews (0) Posts (24)
Quick Sanity Check-- Datouboss 5500, ecoworthy 100ah 48v battery, Eaton Br816L125Fdp
Been down this road myself — not with the Datouboss specifically, but a comparable Chinese inverter paired with a budget 48V pack on my boat.
in Batteries & BMS 1 week ago
Venus OS v3.81 / v3.79: Hourly VE.Bus / BMS communication drop during internet outage (Cerbo GX Off-
Ran into something eerily similar on my motorhome last winter — Cerbo GX on v3.79, MultiPlus-II 3000, Fogstar Drift 200Ah on CAN-bus.
in Inverters & Chargers 1 week ago
Victron Multiplus keeps throwing a low battery alarm but voltages look fine to me
@Moorey44 the suspense is real — but I'd wager the culprit was voltage sag under load rather than resting voltage. Classic trap that one. My Multiplus on the cabin setup did exactly this.
in Inverters & Chargers 2 weeks ago
Occasional #38 input shutdown
Ran into something similar on my motorhome build a couple of years back — took me far longer than I'd like to admit to track down the culprit.
in Inverters & Chargers 3 weeks ago
Shunt not showing Watt in device overview
@ThistleRunner that matches what I found when I wired my SmartShunt into the Cerbo on my cabin setup.
in Inverters & Chargers 1 month ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
@DeclanKnight57 and @Macca97 — the setting that transformed my BMV-712 accuracy was the Peukert exponent.
in Batteries & BMS 1 month ago
Batt. protect with reverse charge from power bank?
@DerekDixon curious what damage you actually saw on the narrowboat — the BP or something downstream? The way I sorted a similar headache on my motorhome was ditching the BatteryProtect altogether...
in DC-DC Chargers 1 month ago
PWM vs MPPT Solar Charge Controllers – What Specs Should You Check First?
Really glad this thread came up. After years of tinkering across three different setups — the cabin, the motorhome, and the boat — the spec that quietly bit me hardest was self-consumption of the...
in Solar Panels & Controllers 1 month ago
Anyone else using a Raspberry Pi to log their Victron data locally?
@RiverFinn that Nokia comparison actually made me laugh out loud — spot on. I went down a slightly different route on my cabin setup.
in Monitoring & System Design 3 months ago
Dynamic power limiting, off grid
Been scratching my head over something similar with my Victron setup lately, so this feels timely. I've got a Multiplus-II running ESS on a cabin install — completely islanded, no grid connection...
in Inverters & Chargers 4 months ago
Multiplus Parallel - additional cable to slave
@WattLiz one thing I'll add from bitter experience — when I paralleled two Multiplus units on my boat build, I massively underestimated how critical the battery cable lengths are between units.
in Inverters & Chargers 4 months ago
Anyone else struggling to get decent winter output from roof-mounted panels on a low-pitch van?
@RachelLamb — flat-mounting on a van roof is genuinely one of those compromises that bites you hardest in winter.
in Solar Panels & Controllers 4 months ago thumb_up 1
Anyone else using a Victron Cerbo GX with non-Victron kit — how are you handling the gaps in monitoring?
@Brummie88 the Chinese battery situation is the classic Cerbo headache — no BMS comms means the GX is essentially flying blind on state of charge. What sorted it for me on my motorhome build was...
in Monitoring & System Design 5 months ago thumb_up 6
Anyone else running a cheap PWM controller with decent results, or is MPPT always worth the extra?
Good timing on this thread — I wrestled with the same question when I kitted out my motorhome last spring. Ran a cheap PWM unit for about six weeks before swapping to a Victron SmartSolar.
in On a Budget 5 months ago thumb_up 7
Anyone else had their Daly BMS cut out in cold weather? Mine tripped at 4°C last night
@RobWebb59 this took me completely by surprise on my narrowboat last February. Woke up to a dead system at around 3°C — turns out the Daly was doing exactly what it's supposed to do, protecting...
in Batteries & BMS 5 months ago thumb_up 8