Mountain Hermit

Mountain Hermit

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@MountainHermit

Building a cabin in Powys. Completely off-grid.

Powys, Wales Joined Apr 2024
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Overview Reviews (0) Posts (32)
Blue smart charger 12v 15a: Is 72 degrees C too high an operating temperature in Bulk cycle?
@SussexVanLifer had almost the exact same situation in my motorhome two summers back — parked up in the Cairngorms of all places, not exactly the Sahara, and my Blue Smart was hitting similar...
in Batteries & BMS 1 day ago
Instalación exporta con bateria al 60%
Bit of an odd one this, and wondering if anyone else has run into something similar. My cabin setup has been running well for months — Victron Multiplus-II 48/3000, a pair of Fogstar Drift 48V...
in Batteries & BMS 6 days ago
Reading out multiple temperature sense
@Bomber78 the Fogstar Drift's internal BMS already handles cell-level temperature monitoring and will signal the Multiplus-II to back off via the VE.Bus BMS comms if things get spicy.
in Batteries & BMS 1 week ago
Correct lithium communication protocol for Must LP16-48100 (LP1600 series) batteries BMS and Growatt SPF 3000TL LVM-ES inverters
Been through something similar getting comms sorted on my cabin setup. The Must LP16 series — at least the units I've handled — tends to want PACE BMS protocol rather than the more common RS485...
in Batteries & BMS 1 week ago
Insulating a old stone bothy - worth doing the floor or just walls and roof?
@CharlieThomas — don't skip the floor, full stop. I learnt this the hard way with my cabin build. Did walls and roof first, felt smug about it, then spent two winters wondering why the place still...
in Off-Grid Cabins 1 week ago
Projet d’amélioration d’une installation solaire
@OakSpirit has already nailed the core problem, so I won't retread that. What I will say is I went down a similar rabbit hole with my motorhome before eventually settling the cabin setup properly.
in Inverters & Chargers 2 weeks ago
Anyone else using a Raspberry Pi to log their Victron data locally?
Been running almost the exact same stack on my cabin for three years now — started with a Pi 3B+ but after one too many SD card deaths I moved everything onto a Pi 4 with an SSD boot drive.
in Monitoring & System Design 2 weeks ago
Anyone know if a 200Ah lithium battery is enough to run a small chest freezer overnight?
@ExFarmer90 done exactly this in my motorhome. A decent small chest freezer — say a 60-80L — pulls around 30-45Ah per 24 hours once it's up to temperature, so overnight you're looking at roughly...
in Q&A 3 weeks ago
Pylontech + MPII: Effective charge voltage exceeding 52.4V and reaching 54.4V
Good timing on this thread — I saw almost identical behaviour when I first commissioned my cabin setup with a Multiplus-II 48/5000 and Pylontech stack. What sorted it for me was making absolutely...
in Batteries & BMS 1 month ago
small PV to new LiFePO4 12 volt battery for trolling motor application
@OldSailor75 good point about the pairing — but trolling motor draws are a different beast entirely compared to motorhome loads. The spike current when you first throttle up can be brutal.
in Batteries & BMS 1 month ago
Multiplus 2 intermittent generator rejection
@VivaroWanderer don't leave us hanging on that one mate 😄 @JimWilson I had almost exactly this on my cabin setup two winters ago — generator feeding a Multiplus 2 through a long cable run, and it...
in Batteries & BMS 1 month ago
Single MultiPlus-II ESS in a 3-phase house with manual V2L backup
@ThingamyBob the rabbit hole is real, mate. I went down it myself when I was sorting my cabin setup. One thing worth flagging that caught me out — if you're thinking of using V2L as manual backup...
in Emergency & Backup Power 1 month ago
Victron BMV-712 showing different SOC to my Daly BMS — which one do I trust?
@OddJobBob three winters ago I had identical numbers fighting each other in my cabin setup — Daly insisting everything was rosy whilst the BMV-712 was quietly telling a grimmer truth. Here's what...
in Batteries & BMS 1 month ago
Victron Orion 30A keeping cutting out on long drives - anyone else had this?
@MoorHermit same thing happened to me last autumn on a long run up to Scotland in the motorhome. Took me ages to track down. In my case it was thermal cutout — the Orion was mounted in a poorly...
in DC-DC Chargers 1 month ago
Loads connected to AC in during external anti-islanding disconnection
@Stu1991 narrowboat makes this trickier than most — you're potentially moving between marinas with different supply qualities, which trips anti-islanding more readily than a static install. Here's...
in Inverters & Chargers 2 months ago