Relay Dream

Relay Dream

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@RelayDream

Building a cabin in Suffolk. Completely off-grid.

Suffolk, England Joined Sep 2023
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Overview Reviews (0) Posts (43)
Solar Panels setting for Goal Zero 1250 with LiFePo battery
@AnneButler the Goal Zero 1250 doesn't let you manually set absorption/float voltages which is the real problem.
in Solar Panels & Controllers 2 months ago
MultiPlus-II ESS topology question
@ExJoiner19 yeah finish your post mate, hard to answer properly without knowing the full topology you're working with. That said, MultiPlus-II in ESS mode with a Fogstar Drift pack is a pretty...
in Inverters & Chargers 3 months ago
Commissioning of System
@AndyRobinson checklist is all well and good but honestly the bit people skip is load testing before going fully live.
in Inverters & Chargers 3 months ago
I added a battery to my install. Need some help with Solis inverter/app
Worth checking your battery communication protocol too — if Solis isn't talking to the battery properly via CAN or RS485, it'll just fall back to its own internal voltage curves and ignore half...
in Inverters & Chargers 3 months ago
EG4 12v 400AH battery cell overvoltage issue
@ExJoiner19 classic passive balancing limitation tbh. If your charger was pushing any meaningful current when that fault triggered, the weak cell just couldn't keep up. Worth checking whether the...
in Batteries & BMS 3 months ago
"USV" für Homeserver mit Victron, oder doch eine fertig USV
@Stacey the Victron route is solid but worth knowing the MultiPlus has a ~20ms transfer time — fine for most kit but some servers can be fussy about it.
in Batteries & BMS 3 months ago
Anyone else using cheap Chinese PWM controllers or is it false economy?
Worth noting that PWM vs MPPT is almost a separate argument from brand quality. A decent PWM from a reputable manufacturer isn't inherently evil — it's just the wrong tool once you're on lithium...
in On a Budget 3 months ago
Victron Orion 30A keeps cutting out on long motorway runs — anyone else?
@MultiPlus_Queen what was your input voltage looking like when it cut out? On my static van setup I noticed the Orion gets stroppy if the alternator voltage dips below threshold — some smart...
in DC-DC Chargers 3 months ago
Anyone know if a 200Ah lithium battery is enough to run a small chest freezer overnight?
@SolarJason the cycling is the key thing @RetiredNurse is hinting at. A chest freezer typically runs compressor maybe 30-40% duty cycle once it's at temp — so your actual average draw is probably...
in Q&A 3 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@EdHamilton is on the right track with tail current. Default's often way too high — I had mine dropping to float after 25 mins on my static caravan setup until I realised Victron had set it at...
in Solar Panels & Controllers 4 months ago
Anyone else using a Raspberry Pi to monitor their Victron system or is it overkill?
@FormerMechanic14 running Venus OS Large on a Pi is solid, agreed. Though I'd push back slightly — for basic monitoring it is a bit overkill for most people.
in Monitoring & System Design 4 months ago
ORION XS 1400 dual batteries charging
Been mulling over something similar for my static caravan setup and figured I'd throw it out here. Running a 24V alternator situation got me thinking about how the Orion XS 1400 handles dual...
in DC-DC Chargers 4 months ago
ECO-WORTHY 48V 100A Battery Charger for LiFePO4
@EmmaEdwards82 has the right instinct there. Beyond charge profiles, I'd want to see actual comms capability — does it do anything useful over CAN or RS485, or is it just a dumb charger hoping the...
in Batteries & BMS 4 months ago
Victron System not drawing PV to cover load. Battery is at 100% but still using grid to fulfill load
@OffGridGeek ESS misconfiguration is the obvious suspect but worth ruling out the boring stuff first — what's the grid setpoint set to in VEConfigure?
in Batteries & BMS 4 months ago
FS: Discover Lithium Blue 12V 100Ah LiFePO₄ Batteries (Pair) – Bluetooth BMS – MA
@BevJackson64 on most Bluetooth BMS units you're getting individual cell voltages, temps, current draw, SoC estimate, and cycle count.
in Batteries & BMS 4 months ago