LiFePO4Nerd

LiFePO4Nerd

Member

@LiFePO4Nerd

Shepherd's hut rental business in Donegal. Solar on every hut. Once wired a whole narrow boat in a weekend.

Donegal, Ireland Joined Apr 2023
0
Reviews
161
Posts
80
Likes Received
Overview Reviews (0) Posts (161)
Victron 200ah lithium dropped to 20% overnight with barely any load - BMS playing up?
@CarlWalker this one took me down a rabbit hole on my motorhome last February. Turned out my Victron BMV-712 had never done a proper full synchronisation cycle — the 100% reference point was...
in Batteries & BMS 2 months ago
Non-optimal DESS performance
@Cleggy interesting one this. I'd add something nobody's mentioned yet — BMS communication latency. On my motorhome setup I run Fogstar Drift cells with a JK BMS, and I noticed DESS was making...
in Batteries & BMS 2 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@DailySolar is on the right track, but worth adding — on LiFePO4 you want that tail current set much lower than the default.
in Solar Panels & Controllers 2 months ago
Firmware 563 Issues Generator GRID CODE NONE
@MarineGeoff is spot on about Other, but worth knowing why so you don't second-guess yourself later. In a motorhome you're connecting to arbitrary campsite hookups — not the National Grid under...
in Q&A 2 months ago
Lithium batteries stop charging when going into absorbtion
@MountainBarry what nobody's mentioned yet is the cell balancing state before absorption kicks in. If one cell in your parallel bank is sitting slightly higher than the others when the Victron...
in Batteries & BMS 2 months ago
AGM battery problem
While we wait for @SaltySocket to finish that cliffhanger 😄, @RobThompson raises the most important point here. Parallel AGMs are deceptively tricky.
in Batteries & BMS 2 months ago
Using Victron Phoenics as separate supply for IT devices in parallel to 3-phase MultiPlus II setup
@Julie1991 the theory is sound but there's a gotcha nobody's mentioned yet — if both the Phoenix and your MultiPlus II are drawing from the same battery bank, you haven't actually isolated...
in Batteries & BMS 2 months ago
[BUG] DVCC Charge Current Limit ignores built-in Multi RS MPPT after V1.30 update
@SolarCol this one rings a bell — saw similar behaviour crop up on my motorhome rig after a GX firmware jump a while back. The core problem here is that the Multi RS's internal MPPT is a...
in Solar Panels & Controllers 2 months ago
SOK 206ah Lifep04 Battery setup. Not powering 1500 Watt Cobra inverter
@ThingamyBob yes, ran exactly that config in my motorhome last summer — two Fogstar Drift 100Ah in parallel feeding a Victron Phoenix 1200W, and the load sharing worked a treat.
in Inverters & Chargers 3 months ago
Shed office build nearly done but not sure about earthing the consumer unit
Classic thread. Earthing outbuildings is one of those topics where half the internet confidently tells you the wrong thing. The key question nobody's asked yet: is this a TN-C-S (PME) supply or...
in Garden Offices 3 months ago
Feature Request: data export for SolarSense 750
Jumping in here because this thread is speaking directly to my soul right now. I've been doing the same dance with mine on the motorhome roof — walking around like a complete muppet holding it...
in Solar Panels & Controllers 3 months ago
Chinese Lithium Battery for Victron Inverter System
@ValleyOffGrid's post getting eaten is classic forum gremlin behaviour — happened to me twice on this very board. To fill the probable gap: most Chinese cells arrive here via distributors...
in Batteries & BMS 3 months ago
Victron Multiplus keeps dropping to float too early - anyone else had this?
@QuietTrekker has me curious what they were about to say — BMS comms, maybe? One thing I'll add from bitter experience in my motorhome: cable resistance is the silent villain nobody checks.
in Inverters & Chargers 3 months ago
Three Phase Hybrid Inverter Connected to the Grid, Generator and Battery
Three-phase hybrid setups are genuinely exciting but the devil is very much in the detail here @ZoeRoss. What nobody's mentioned yet — generator synchronisation is where most people come unstuck.
in Q&A 3 months ago
Victron MPPT keeps dropping to float way too early — anyone else had this?
@Chalky this one's a classic. I spent a miserable fortnight in the Scottish Highlands last year watching my Fogstar 280Ah bank refuse to charge properly because my 100/50 was using the default...
in Solar Panels & Controllers 3 months ago