What's New

Latest posts across all forums

Latest Threads Unanswered
@VanAmy is right about lithium compatibility, and I'll add something from the static caravan side that crosses over — charge profile matters more than raw output. When I eventually sorted my tiny...
Borders Nomad in Marine & Boat 3 weeks ago
@SamFrost73 The autumn equinox transition always catches people out because it's not just about shorter days — your panel angle that was perfectly optimised for summer sun is now pointing at a...
OldSparky52 in General Chat 3 weeks ago
@SophieFisher worth noting that even if your BMS exposes individual cell voltages over CAN or RS485, getting VRM to display a calculated delta as a proper widget is a faff.
@Ozzy the dirty secret is that PWM is perfectly fine for small lead-acid setups like yours — it's essentially just a switch, so there's not much to go wrong, and at 200W of panels you're not...
Marine Geoff in On a Budget 3 weeks ago
@TQ_Builds worth adding to what @BlownFuse said — if you can get physical access to the Cerbo, have a look at the sticker on the unit itself for the serial number.
@LDVAdventure the price-to-watt ratio point is valid but worth scrutinising more carefully — which watts exactly? Running one of these on my boat as backup last summer and the continuous rating...
@AshSeeker that voltage sag issue is the real killer in practice. Had a similar headache on the narrowboat when I was experimenting with mismatched kit — the inverter just trips out the moment...
@FormerMechanic what's the concern specifically for UK installs? Is it a G98/G99 thing, or more about DNO requirements around high-voltage DC string design?
Good thread this. Worth mentioning that the DNO actually has an obligation under Engineering Recommendation G5/5 to keep supply voltage within ±10% of 230V, so 257V is technically within spec but...
Good thread. One thing worth adding to @CarlBaker's point — the accuracy of both devices degrades over time without proper calibration. My SmartShunt drifts noticeably if the battery never hits a...
T6 Solar in Batteries & BMS 3 weeks ago
@TQ_Builds one thing worth doing before you contact Victron directly — check whether the Cerbo GX is still showing on VRM under any login.
@Ozzy my garden office Victron MPPT cost more than your entire shed setup and I still lie awake wondering if I've wasted money — you're winning at life.
Norfolk VanLifer in On a Budget 3 weeks ago
@TracyAllen the "premium feature" framing is spot on unfortunately. Worth flagging for anyone considering these units — the ISolar/EASUN range uses the same internal architecture as a...
Macca64 in Inverters & Chargers 3 weeks ago
@LH_Marine that's the nightmare scenario right there — controller taking out other kit with it. Saw similar on my boat build, mate had a cheap unit kill a brand new battery. Ended up going Victron...
Happy Builder in On a Budget 3 weeks ago
Done this on my static caravan Cerbo — the Octopus Agile API endpoint is...
@MultiPlusFan that's underselling it — at full load you're talking serious heat dissipation in a very confined column of air.
Something I noticed on my narrowboat setup that nobody's mentioned yet — firmware consistency between the two units. Had a similar overshoot issue after I updated one MultiPlus-II but forgot the...
Victron's VRM recovery process is actually pretty straightforward if you go direct — just raise a ticket via their vrm.victronenergy.com support portal.
Wez in Inverters & Chargers 3 weeks ago
@SophieFisher totally relate to this - I went down exactly this rabbit hole last winter on my own boat. @Mike1980 makes a fair point about the BMS being the bottleneck.
Panel Julie in Batteries & BMS 3 weeks ago
@48VQueen and @BrianBrown have covered the wake-up side, but worth flagging — once you do get it back online, dig into why it went that deep in the first place. On my boat setup I had similar with...
ExBrickie in Q&A 3 weeks ago