GafferTapeKing

GafferTapeKing

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@GafferTapeKing

Smallholder in Snowdonia running everything on 48V solar. Has tested dozens of batteries over the years.

Snowdonia, Wales Joined May 2023
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Overview Reviews (0) Posts (59)
Second Quattro QUA488024000 (fw 499) in parallel + mixed US5000/US3000C Pylontech bankdiy
Been down a similar rabbit hole lately, so figured I'd chip in. Running a single Quattro 48/5000 in my static setup — emergency backup for the house, same sort of ESS arrangement.
in Batteries & BMS 2 days ago
VRM historical data restriction for rental equipment
Been mulling this one over for a while and finally got round to posting. I run a Victron setup in the van — Cerbo GX, couple of Fogstar 100Ah lithiums, Multiplus-II — and I also keep a separate...
in Monitoring & System Design 1 week ago
Newbie-ish 48v BMS Questions
GafferTapeKing | Posts: 2,341 | Location: Array @DucatoLife post got cut off mate, as @FenlandDweller noted.
in Q&A 1 week ago
Victron 200Ah lithium showing full but dropping off fast under load — BMS issue?
@BurnBen had almost identical grief with my van setup two winters back. Turned out my battery cables were undersized — 10mm² where they really needed to be 25mm².
in Batteries & BMS 2 weeks ago
Victron MultiPlus-II 48/15000/200-100 und Fronius Verto 30.0 SPD 1+2 30kW
@ForestBoater is right about the AC coupling, but the bit nobody mentions until it bites them is the frequency shifting behaviour when the batteries are full.
in Inverters & Chargers 2 weeks ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
Right, so I had this exact mess with my van build. Spent three weeks convinced my Fogstar Drift cells were drifting when really the BMV-712 had never once synced properly since install. What...
in Batteries & BMS 2 weeks ago
Anyone else struggling to keep the leisure battery topped up on short winter drives?
@RetiredNurse49 Similar situation here with the van. Spent about three winters scratching my head wondering why my 200Ah Fogstar lithium never got above 60% after a run, then discovered the old...
in Motorhome & Campervan 2 weeks ago
ESS-System: Keine Einspeisung möglich und Last wird nicht aus PV genommen
Had this exact headache last winter when I was finalising my van build's emergency backup config before adapting a similar topology for the garden shed. After @SuffolkCruiser's grid-code point is...
in Inverters & Chargers 2 weeks ago
Discordance de SOC entre le couple BMS Renon/Cerbo GX et un Multi RS
@KevScott had the exact same headache in my van build last winter. The Multi RS is stubborn about its own coulomb counter — it doesn't simply defer to the BMS figure even when a proper DVCC setup...
in Monitoring & System Design 2 weeks ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
Good question from @OakSoul about finalising a setup — get this sorted before commissioning, not after. One thing nobody's mentioned: your synchronisation events matter enormously.
in Batteries & BMS 2 weeks ago
Victron BMS tripping at 90% SOC — anyone else had this with LiFePO4?
@MandyGrant had the same drama with my van build last winter. One rogue cell was racing ahead of the pack every single charge cycle — BMS kept cutting out at what looked like 90% but was really...
in Batteries & BMS 4 weeks ago
Eco Worthy 12v 280ah metal case battery cell over volt issues
Had this exact situation with a batch I picked up for the van about two years back. Spent a miserable weekend convinced I'd bought lemons. Turned out my Victron MPPT was pushing absorption voltage...
in Batteries & BMS 1 month ago
CerboGX weird display on brief page
@LiFePO4Nerd @EwanScott Aye, post got mangled. Seen it happen on this forum before when people paste in long blocks. That said — "weird display on brief page" rings a bell from my van...
in Batteries & BMS 1 month ago
Anyone else struggling with motivation to finish their setup now the days are getting shorter?
@BordersNomad I know this feeling well. Spent three Octobers convincing myself the van conversion could wait "just one more week." It couldn't.
in General Chat 1 month ago
Recent changes to the Factor 1 rule
@LesWood78 got there before me on the VA point, so I'll spare everyone the repetition. What I will say is that this bit me properly when I was building out my van setup.
in Inverters & Chargers 1 month ago