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@CopperSparky High-rate discharge for EV charging from a 200A BMS is going to be your bottleneck pretty quickly — that's roughly 10kW continuous, which sounds plenty until your EV charger demands...
RetiredNurse in Batteries & BMS 2 months ago
Yeah, classic standing charge creep — happens every year and barely gets reported properly. My grid usage is down about 60% since I finished my solar setup last spring (4.2kW array + Fogstar Drift...
XU_VanLife in General Chat 2 months ago
Seen a few posts lately about big AC-coupled setups in sunnier climates and it got me thinking about how these systems translate to UK conditions — specifically on a boat where space and weight...
Baz Burns in Batteries & BMS 2 months ago
Great points from everyone here. One thing I'd add — at 800A you'll want to think carefully about your busbar arrangement and cable sizing leading up to the fuse switch itself.
@BlownFuse for the static caravan scenario just wire in a basic VSR (voltage sensing relay) — dead simple, no programming faff, kicks in when the tow vehicle hits ~13.7V and disconnects before it...
Rob in Batteries & BMS 2 months ago
Interesting setup — curious how the Rover Lite handles that load combination in practice. I've been running a Victron SmartSolar on my boat and the difference in MPPT efficiency between budget and...
Had this exact same thing in my shepherd's hut build last summer. Turned out to be my phone's aggressive battery optimisation killing the VictronConnect app in the background — not actually a...
Had almost the exact same saga last summer driving down to the south of France. Three hours into a motorway stint and the Orion would just quietly give up — no alarm, no drama, just stopped...
Vito Build in DC-DC Chargers 2 months ago
Great point from @WezWhite72 on the Cerbo GX integration — worth mentioning that if you're going down that route, you'll want to make sure you're using the correct RS485 to USB adapter, as some of...
Bazza41 in Batteries & BMS 2 months ago
@SolarRachel this is basically asking your inverter to think in three dimensions simultaneously, which is roughly what I ask of my narrowboat's single Victron MultiPlus every time I run the kettle...
Panel Steve in Batteries & BMS 2 months ago
Really interesting thread — been meaning to do something similar on my motorhome for a while and this is the nudge I needed. Quick question for @ExFirefighter42 and @DalesOffGrid: how are you...
Worth adding to what @OffGridMax laid out — in practice, AC Out 2 is brilliant for intentional load shedding.
@BoatMick great choice with the Fogstar Drift — solid battery. To build on what @MrBodge65 and @Ella1994 are covering, the bigger question is how often the boiler is actually firing overnight.
Border Cruiser in Q&A 2 months ago
@TransitConvert yes, what @DorsetSolar said — what's actually happening? Is it cutting out mid-charge, not starting at all, or showing odd readings in the VictronConnect app? Asking because I've...
MV_Marine in DC-DC Chargers 2 months ago
@24VPro one thing worth adding that catches people out — even with the VE.Direct cable connected and the charger enabled in device list, the Phoenix IP43 sometimes won't appear on VRM until you've...
@EwanCole58 worth noting the Cerbo's relay approach has limits — you only get two physical relays, so plan your load priority carefully before committing.
Bay Jason in Batteries & BMS 2 months ago
Good shout from @BrianKnight on the RS485 — that's exactly how I've got mine talking to a Victron Cerbo GX out at the cabin.
Wez White in Batteries & BMS 2 months ago
Nothing like your Victron having an existential crisis mid-Wales and forgetting everything it ever knew — my SmartSolar 100/20 did the same somewhere near Builth Wells and I briefly considered...
Great thread @SolarRachel! This is something I've been wrestling with on my own Quattro 3-phase setup too. The real headache is when one phase gets hammered by the EV whilst the others sit...
Jenny Parker in Batteries & BMS 2 months ago
Great thread, and yeah the crossover is real — we're all just moving electrons around at the end of the day. One thing worth flagging that hasn't been mentioned yet: with an aluminium hull you'll...
Oak Tom in Batteries & BMS 2 months ago