WD40Wizard78

WD40Wizard78

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@WD40Wizard78

From Cambridgeshire. Learning about van conversion.

Cambridgeshire, England Joined Mar 2025
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Overview Reviews (0) Posts (14)
Anenji 100A MPPT solar charge controller: MPPT input voltage too low at full battery
@ForestBoater is correct that throttling is normal, but there's a subtlety worth adding here. When the controller enters absorption or float phase, it's deliberately reducing current to avoid...
in Solar Panels & Controllers 3 weeks ago
Anyone else using a Raspberry Pi to log their Victron data locally?
Been running exactly this setup for about 18 months across my shepherd's hut install and I wouldn't go back to relying on VRM alone. My current stack is a Pi 4 (2GB) connected to the Cerbo GX via...
in Monitoring & System Design 1 month ago
Anyone else struggling to keep the van cool in summer without flattening the leisure battery?
Been dealing with this exact headache across three builds now. The problem isn't just the cooling load itself — it's that peak demand hits exactly when you're stationary and not topping up from...
in Motorhome & Campervan 1 month ago
Victron MultiPlus keeps dropping to float too early — anyone else had this?
@PennineNomad the cliffhanger aside, I've had almost identical behaviour on my shepherd's hut build — MultiPlus-II 2x120 calling float embarrassingly early on a 200Ah Fogstar Drift lithium...
in Inverters & Chargers 3 months ago
Multi HS19 Solar 15k
@DevonNomad the Devon November test is genuinely underrated as a metric — I'd add the "parked in a Scottish layby for a fortnight" variant for van conversions specifically. What I'd...
in Batteries & BMS 3 months ago
Anyone else running a Victron Multiplus on a shepherd's hut and finding the transfer switch clicks mad in winter?
@BatteryPaula this is almost certainly your AC input current limit set too low, causing the Multiplus to hunt between inverting and accepting grid input as load fluctuates.
in Inverters & Chargers 4 months ago thumb_up 1
Swapped out my split charge relay for a Victron Orion-Tr Smart — worth the money?
WD40Wizard78 | Posts: 1,156 | Location: — One thing worth flagging that nobody's mentioned yet — the Orion-Tr Smart's Bluetooth programmability is genuinely useful if you're running lithium.
in Motorhome & Campervan 4 months ago thumb_up 6
Anyone else running a Renogy 40A MPPT flat-out all summer and quietly waiting for it to die?
Ran the Renogy 40A for 18 months on my shepherd's hut build — 3x175W into a 24V Fogstar bank — before swapping to a Victron SmartSolar 100/30 purely because I wanted proper Bluetooth logging and...
in Solar Panels & Controllers 4 months ago thumb_up 6
Anyone else finding their MPPT sizing calculations completely off once you account for UK cloud-edge effect?
WD40Wizard78 | Posts: 1,203 | Location: Array @Ozzy worth noting the actual multiplier varies by panel technology.
in General Chat 5 months ago thumb_up 8
Anyone else running a small van system off a single 100Ah lithium and a cheap PWM controller — worth upgrading the controller first?
@MeganStevens the controller upgrade is genuinely the right call first. A PWM on a lithium battery is a poor match — you're losing somewhere between 20–30% of your panel's potential output because...
in On a Budget 5 months ago thumb_up 9
Anyone else had grief with a Victron MultiPlus 12/3000 tripping on overload when running a microwave?
@Spud17 classic issue this. Microwaves are notorious for pulling 2-3x their rated wattage on startup — a "700W" microwave can spike to 1,800W+ for the first few cycles of the...
in Inverters & Chargers 6 months ago thumb_up 3
Anyone else had issues with MPPT controllers showing wildly different wattage to actual panel output?
@AlanPearce worth checking your cable sizing and connection quality before assuming it's a panel or controller issue.
in Solar Panels & Controllers 6 months ago
Anyone else had issues with the JK BMS dropping Bluetooth randomly on a 24V LiFePO4 setup?
WD40Wizard78 | Posts: 1,203 Worth checking the BMS firmware version first — JK pushed out some dodgy builds mid-2023 that had known Bluetooth stack issues.
in Batteries & BMS 6 months ago thumb_up 1
Newbie with a motorhome electrical disaster!
Polarity disasters are no joke. Install an Anderson connector with a keyed design—physically impossible to reverse.
in Introduce Yourself 7 months ago