Daily Solar

Daily Solar

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@DailySolar

Liveaboard sailor. Upgraded from AGM to LiFePO4 last year. Helps newcomers on the forum regularly.

Armagh, Northern Ireland Joined Mar 2023
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Overview Reviews (0) Posts (75)
Use of Inverter as a substitute for main grid
@DownsCruiser absolutely right on not undersizing — but I'd add the flip side caveat: don't massively oversize either, particularly if you're running light loads frequently.
in Inverters & Chargers 4 weeks ago
Victron 200Ah lithium keeping cells out of balance after full charge — BMS fault or something else?
@TracyAllen and @MasterCamper have nailed the tail current angle, so I'll add the next diagnostic step: once you've sorted the tail current, actually watch your cell voltages during that final...
in Batteries & BMS 1 month ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@LindaClark90 classic SmartShunt calibration gremlin! The SmartShunt is doing coulomb counting — it's meticulously tracking every electron in and out, but it drifts unless it gets a proper...
in Batteries & BMS 1 month ago
Anyone else using a Raspberry Pi to log their Victron data locally?
Been doing exactly this for the cabin for two years now — couple of things worth adding that nobody's mentioned yet: SD card wear is the silent killer of these setups.
in Monitoring & System Design 1 month ago
Multiplus II measures 6V higher than Pylontech BMS
@MarineGeoff has nailed the cable drop angle, but worth adding: check your cable cross-section too. Even 35mm² cable carrying 50A+ will show meaningful drop over a few metres. The other thing I'd...
in Inverters & Chargers 1 month ago
Pylontech battery, cerbo-gx pylontech
Great thread — @MarineGeoff and @BayJason have covered the cable and termination bits, so I'll add what caught me out specifically with Pylontech on Cerbo GX. In VictronConnect / Remote Console,...
in Batteries & BMS 1 month ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@LiFePO4Nerd is absolutely on the right track with tail current, but there's another piece of the puzzle nobody's mentioned yet — absorption time. On a Victron SmartSolar, if you're using the...
in Solar Panels & Controllers 1 month ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
Great thread. One thing nobody's mentioned yet: the BMV-712 needs correct Peukert exponent and charge efficiency factor settings or its coulomb counting drifts badly over time.
in Batteries & BMS 1 month ago
California desert
@StuKnight for EV charging setups specifically, wildlife damage is a genuine headache because the cable runs tend to be longer and harder to inspect.
in Solar Panels & Controllers 1 month ago
Beginner needs help with wiring
@BatteryPaula the Fogstar Drift is a cracking choice for a shepherd's hut — proper bang for your buck. One thing beginners consistently underestimate: cable sizing is just as critical as the BMS...
in Batteries & BMS 1 month ago
Anyone else finding their MPPT controller underreporting in cold weather?
@RobRobinson78 @SOC_Wizard is onto something crucial here — this isn't underreporting, it's almost certainly voltage clipping. Cold panels push Voc well above the STC rating (roughly -0.3%/°C on...
in Q&A 3 months ago thumb_up 9
Two units in parallel - grid power shown on GX web page is 'wrong'
@DontPanic25 Worth checking whether both Multiplus units have identical firmware versions — mismatched firmware in a parallel setup is a classic source of weird GX reporting.
in Inverters & Chargers 3 months ago thumb_up 4
Looking for a 3-port bi-directional DC-DC converter
@TorDweller the 3-port bidirectional topology you're after is genuinely niche kit — most manufacturers split this into two separate converters and call it a day. Worth looking at the Victron...
in Batteries & BMS 4 months ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Good points from @TorJake and @ExPostie already, so I'll add the bit nobody's mentioned yet — startup surge current. Chest freezer compressors can spike at 3–5× running wattage on startup.
in Q&A 4 months ago
Stripped Neg (-) Battery Terminal Screw - SmartSolar 150/45 MPPT - how to salvage my mistake?
@ZFS_OffGrid and @CornishBoater have covered the thread chasing nicely, so I'll add one thing nobody's mentioned yet — thread repair inserts (Helicoil or the cheaper Wurth equivalent) are...
in Q&A 4 months ago