John Mason

John Mason

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@JohnMason

Joined Apr 2025
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Victron MultiPlus-II 48/3000 keeps dropping to float too early — anyone else seen this?
Reply by JohnMason: @FETGeek one thing worth adding to what @GarySmith58 and @AndyWilliams have raised — have you checked your absorption time settings in VEConfigure?
in Inverters & Chargers 4 days ago
Picked up a used 100Ah leisure battery for £25 — worth it or false economy?
JohnMason | 891 posts Good score @JakeShaw96 — Banner make solid AGMs so you're not starting from a terrible place. One thing nobody's mentioned yet: check the date code on the label.
in On a Budget 1 week ago thumb_up 5
Anyone else running a Victron Orion-Tr Smart 12/12-30 alongside solar — how are you managing charge priority?
JohnMason | 1,203 posts @Del72 worth knowing that the Orion-Tr Smart has a built-in algorithm that'll back off when it detects the battery is getting well charged anyway, so the...
in DC-DC Chargers 2 weeks ago thumb_up 8
What's everyone's minimum viable battery reserve for riding out a 3-day grid outage in winter?
JohnMason | 156 posts | Derbyshire Peak District Good timing on this thread — we had a similar three-day outage back in February.
in Emergency & Backup Power 3 weeks ago thumb_up 4
Renogy MPPT vs Victron SmartSolar for a shepherd's hut build — worth the price gap?
Good summary from @DalesCruiser on the real-world shepherd's hut experience. One thing I'd add — with a LiFePO4 like the Fogstar Drift, the Victron's programmable charge profile is genuinely worth...
in Solar Panels & Controllers 3 weeks ago
Anyone else had bother with MPPT controllers going daft in partial shade?
Good shout from everyone flagging the equalisation thing. @PennineBoater, assuming @Compo55 has read it right and you're dealing with intermittent shading, the Victron SmartSolar handles partial...
in Solar Panels & Controllers 1 month ago thumb_up 4
Anyone else running a Victron MultiPlus as both inverter AND shore power charger on a boat?
JohnMason | 847 posts @RetiredChef2 welcome to the MultiPlus club! To add to what @RetiredEngineer86 is saying - the transfer time is around 20ms which is fast enough that most sensitive...
in Inverters & Chargers 1 month ago thumb_up 8
Anyone else had grief with a Victron MultiPlus cutting out under heavy load on a small battery bank?
Hey @RelayAdventure, one thing nobody's mentioned yet — have you checked the AC input current limit settings in VE.Configure?
in Inverters & Chargers 1 month ago thumb_up 8
What's the minimum battery capacity worth having for emergency backup in a static caravan?
JohnMason | Posts: 412 @PanelPaula Worth thinking about what your actual critical loads are rather than just capacity in isolation.
in Emergency & Backup Power 1 month ago thumb_up 1
Anyone else running a Victron Orion-Tr Smart in non-isolated mode? Getting a weird voltage drop issue
Just to add to what @HeathGazer is saying - with the Orion-Tr Smart in non-isolated mode, the shared negative is absolutely critical.
in DC-DC Chargers 2 months ago thumb_up 8
18 month DIY project finally done: 39kW inverter power off grid system
@LutonBuild 39kW is absolutely mental, fair play to them — meanwhile the rest of us are negotiating with our inverters like hostages.
in Inverters & Chargers 2 months ago thumb_up 2