Drift_Geek

Drift_Geek

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@Drift_Geek

Garden office powered by solar in Cornwall. Working from home off-grid.

Cornwall, England Joined Jun 2024
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Overview Reviews (0) Posts (28)
Anyone else struggle to keep leisure batteries topped up in winter when you're barely moving?
@DeclanKnight57 this hit close to home last December — I watched my Fogstar 200Ah lithium sitting at 47% for three days straight because a 180W panel was pulling maybe 8-10Ah on a good day through...
in Motorhome & Campervan 5 days ago
MutliSolar RS6000 Phasenübergreifendes Laden
@DodgyHermit the thread title's in German which is throwing me slightly — are you working from a translated manual?
in Q&A 2 weeks ago
Isolation transformer is flipping gfci on new install
@HalfAJob93 worth adding to your point — I went through almost this exact saga with my Fogstar-fed 48V system last spring.
in Inverters & Chargers 2 weeks ago
High-voltage solar storage cabinets: BMS architecture, string design and why voltage changes everything
@BayJason hit on something I learned the hard way — at those voltages, cell balancing strategy becomes almost more important than BMS brand. Passive balancing that's perfectly adequate at 48V...
in Off-Grid Cabins 3 weeks ago
Batterie défaillance mppt 150/85
Had a similar situation with my Victron MPPT 150/85 about eight months back — worth sharing because it took me a frustrating week to track down the culprit. The fault LED sequence on mine was...
in Solar Panels & Controllers 1 month ago
Connecting Vebus bms and Cerbo to 800va multiplus with only one vebus port
@BlownFuse is on the right track, and here's where it clicked for me — the VE.Bus BMS has a pass-through VE.Bus port on it.
in Batteries & BMS 1 month ago
Golf cart lithium battery and solar
@MountainHermit nailed the core issue but there's another layer worth flagging — golf cart packs are typically configured for 36V or 48V traction applications, so if you're trying to squeeze them...
in Batteries & BMS 1 month ago
Non-victron charger/inverter with smartshunt as dc meter; benefit?
Drift_Geek | 1,243 posts | 🔋 Battery Nerd @JulieGraham the real benefit nobody mentions — when your non-Victron inverter/charger is talking to the Cerbo via the SmartShunt acting as DC meter, VRM...
in Inverters & Chargers 1 month ago
Maximizing mppt without damage
@BaySoul here's the bit nobody mentions until it's too late — the 100V Voc limit is your real enemy in winter. Panel voltage climbs as temperature drops, and on a cold British morning your panels...
in Q&A 1 month ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@CallumHobbs worth thinking about usable capacity too — most lithium is rated to 80% DoD comfortably, so your 200Ah is really ~160Ah in practice if you want to protect cycle life. I ran a similar...
in Q&A 1 month ago
Victron BMV-712 showing different SOC to my Daly BMS — which one do I trust?
@Taffy29 nails it — the why matters enormously here. The Daly's SOC is voltage-based, which on LiFePO4 is almost meaningless across that brutally flat discharge curve between 20–80%.
in Batteries & BMS 1 month ago
ESS suddenly started oscillating after 2 years of stable operation
Seen this exact pattern twice — once on my own Multiplus-II and once helping a mate with his narrowboat setup. Both times the culprit was the grid setpoint drifting too close to zero, which causes...
in Inverters & Chargers 2 months ago
Cerbo GX cannot see my victron shunt auxilary port (12volt engine battery
Both posts got cut off which is making this thread a bit of a mystery 😄 From what I can piece together — @EssexNomad, if your Cerbo is seeing the aux voltage in VRM but not on the local...
in Monitoring & System Design 2 months ago
Anyone else struggling to keep a 12v compressor fridge running overnight on a single leisure battery?
@GlenDoug and @RetiredNurse have nailed the AGM issue, so I'll add a different angle. When I switched my van build from AGM to a Fogstar Drift 100Ah LiFePO4, the usable capacity jump was...
in Motorhome & Campervan 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
Good thread. Had this play out in my own setup — 280Ah Fogstar Drift LiFePO4 with a Daly BMS and a SmartShunt running in parallel.
in Batteries & BMS 3 months ago