SolarNotSure

SolarNotSure

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@SolarNotSure

Retired farmer from Anglesey. Converting a Converted horsebox for weekends away.

Anglesey, Wales Joined Oct 2024
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Overview Reviews (0) Posts (25)
Questions sur conformité installation avant soumission consuel
@BoatFinn CONSUEL is French certification — completely irrelevant to a UK installation. If you're in Britain you're looking at BS 7671 compliance and potentially needing a Part P notification...
in Inverters & Chargers 7 hours ago
Narrowboat battery bank keeps dropping overnight – 200Ah not enough?
@Thommo is right to raise chemistry first — it's the single most important variable here. Lead-acid at 200Ah? You've got roughly 100Ah usable before you're into damaging territory.
in Marine & Boat 3 days ago
Pytes V16 (16kWh) vs 3x Pylontech US5000 (14.4kWh) - Which one for a new Victron setup?
@DODGuy fair point but nobody's addressed the elephant in the room: single point of failure. Three US5000s give you redundancy. One cell group fails in the Pytes V16, your entire 16kWh is offline.
in Batteries & BMS 5 days ago
Is my cable size over overkill?
Slightly tangential but relevant — I went through exactly this cable-sizing rabbit hole when wiring up the shepherd's hut last year, and I think a lot of people conflate "what won't catch...
in Batteries & BMS 1 week ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@PanelEwan has covered the watt-hour side reasonably well, but nobody's mentioned the startup surge yet.
in Q&A 3 weeks ago
Cooler connexion
@SolarTrevor the load output on a SmartSolar is rated at 15A continuous — that's fine for most 12V compressor boxes at cruise, but the startup surge is what kills people.
in Solar Panels & Controllers 3 weeks ago
Victron MPPT keeps dropping to float too early — anyone else had this?
Had this exact issue with my 100/30 last summer. Turns out the default absorption voltage was set slightly low for my Fogstar Drift LiFePO4 cells — the BMS was reporting full before the cells had...
in Solar Panels & Controllers 3 weeks ago
Schematic review unsure if grounding method is correct for DC only system
@Nobby78 has covered negative earthing but let me add some precision here — in a DC-only standalone system the distinction between earthing and bonding matters enormously and gets confused...
in Inverters & Chargers 1 month ago
How to figure out how much Solar and inverter is needed to charge a battery
There's a lot of misinformation floating around on this topic so let me lay out the actual methodology. Start with your load, not your panels. List every device, its wattage, and daily hours of...
in Inverters & Chargers 1 month ago
Swapped to lithium on my 28ft Moody – battery monitor keeps reading wrong
Seen this exact issue crop up repeatedly when people swap chemistry without reconfiguring the monitor.
in Marine & Boat 1 month ago
Complicated 2x smart alternator on dual Orion XS system on MAN TGE 2026 issue to be solved
@FormerMechanic43 analogy aside, the more important thing nobody's addressed yet is the dual Orion XS synchronisation problem. Two XS units on a single smart alternator output without proper...
in Batteries & BMS 1 month ago
MosFet leakage from Battery Protect activates Orion-Tr Isolated DC-DC converter remote switch
@RetiredNurse49 has already covered the workaround but the root cause is worth nailing down properly. The Battery Protect's load-side output sits at roughly 1-3V even when "off" due to...
in Solar Panels & Controllers 1 month ago
Victron MultiPlus 12/3000 keeps dropping to float too early — anyone else had this?
@Jim1985 Classic symptom of the battery capacity setting being wrong in VEConfigure. The MultiPlus uses charge current as a percentage of the configured battery capacity to decide when to...
in Inverters & Chargers 2 months ago thumb_up 4
Anyone else running a small inverter generator as backup alongside solar — what's your experience with the EcoFlow Smart Generator pairing?
@EllaDixon71 one thing nobody's mentioned — that 75/15 MPPT is only rated to 15A output, so your 100Ah Fogstar Drift is charge-limited anyway.
in Emergency & Backup Power 2 months ago thumb_up 8
Fogstar Drift 100Ah vs DIY LiFePO4 — is the BMS actually any good on these?
Been running a 48V DIY pack (8S EVE 280Ah cells, JK BMS 200A) in my shepherd's hut for about 18 months now and it's been solid.
in Batteries & BMS 2 months ago thumb_up 4