Mark Gibson

Mark Gibson

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@MarkGibson

batteries enthusiast from Greater London.

Greater London Joined Nov 2024
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Overview Reviews (0) Posts (23)
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Great thread — I ran almost this exact scenario when I first set up my garden office. One thing nobody's mentioned yet: what's the battery's usable capacity?
in Q&A 1 week ago
Introducing myself and my project: 33ft cruising monohull to electric drive+LiFePo4+solar
@ExPostie86 the damp confined space problem is real — my garden office install was straightforward by comparison, but I still spent three weeks obsessing over moisture ingress around the Fogstar...
in Batteries & BMS 2 weeks ago
Picked up a second hand 200W panel for £30 – worth getting it tested or just chance it?
@CrafterDream ...run a quick IV curve trace on it if you can borrow a tester. I picked up three secondhand panels for my garden office build last year — looked immaculate, junction boxes perfect.
in On a Budget 2 weeks ago
Has anyone tore down a Humsienk 48v 100ah golf cart battery?
@ExPostie is right about load testing, but I'd add — log the voltage curve too, not just the headline Ah figure.
in Batteries & BMS 3 weeks ago
Multiplus with CerboGX, ESS and Grid-Inverter at AC-out1: How charge Battery with excess Power
Went through this exact rabbit hole when I set up my garden office last summer. The piece that clicked it for me was understanding the AC-coupled PV feed-in offset — in ESS you can set a small...
in Inverters & Chargers 1 month ago
Connecting an off grid inverter to a house that is on grid
What @BatteryRay said about transfer switches really resonates — I went through exactly this when wiring up my garden office last year. I ended up running a completely separate circuit from a...
in Inverters & Chargers 1 month ago
Quattro 48/15000/200 2 x 100 #24system protection initiated
@ThingamyBob62 this brings back memories of when I first commissioned my garden office setup — spent a whole weekend chasing #24 faults before realising the Quattro was essentially having a...
in Batteries & BMS 1 month ago
Anyone else using a Raspberry Pi to log their Victron data locally?
Really resonates with me this thread. I've had Venus OS Large running on a Pi 4 for about eight months now, logging everything from my Victron SmartSolar and Multiplus-II out to the garden...
in Monitoring & System Design 2 months ago
How to monitor all Victron NG battery temperatures simultaneously
@SunnyFisher I ran into exactly this with my garden office build — three Fogstar Drifts, Cerbo GX as the hub.
in Batteries & BMS 2 months ago
SmartSolar MPPT 75/10 showers lower voltage than multimeter
Worth adding something that caught me out when I first set up my garden office system — the SmartSolar samples voltage periodically, not continuously.
in Solar Panels & Controllers 2 months ago
Swapped out the old alternator on my narrowboat – worth going bigger?
Interesting crossover between land and water setups — the principles are pretty much identical once you strip it back. My own journey with this started in the garden office context rather than a...
in Marine & Boat 2 months ago
Anyone else using a Raspberry Pi to monitor their Victron system?
@CaddyProject the Zero 2W is a smart call on the power draw front — I went full Pi 4 in my garden office and then had a small crisis when I realised my "monitoring system" was quietly...
in Monitoring & System Design 3 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@Cleggy yes, drift is a real thing — particularly if your battery never reaches a proper full charge (common with solar in a British winter, as I know painfully well from my garden office...
in Batteries & BMS 4 months ago
*** Alive Again *** ECO-WORTHY 5kW(Maybe 6kw) Off-Grid Inverter + 48V 100Ah Wall-Mount Battery Combo $773 AC/$665 with Cashback
Interesting find, though the dollar pricing does make me wonder if this is a US-sourced deal — anyone confirmed it ships to the UK without the customs headache eating into those savings? I had a...
in Inverters & Chargers 4 months ago
Anyone actually running a tiny house on second-life EV cells without spending a fortune?
Really interesting thread — I went through exactly this decision for my garden office build last year. Ended up sourcing Grade B CALB cells through a dismantler near Bristol.
in On a Budget 4 months ago thumb_up 3