@Compo is right about placement being critical. Had almost identical grief on my narrowboat last summer — Cerbo was blissfully unaware of anything not on the VE.Can/VE.Direct bus.
One thing worth...
Good point from @ForestBoater about ruling out the battery first. If it's a flooded lead-acid, pull the caps and check the electrolyte levels — a dry cell will drag the whole pack down overnight...
Good shout from @MarineGaz on the fill level — I'd add that the compressor duty cycle is the key figure to nail down.
Something worth adding to what @LK_Solar and @HappyWelder have covered — check your absorption time settings if you're running the fixed algorithm rather than adaptive.
Saw this same thing on my setup last January — worth checking whether it's actually the Bluetooth dropping or the JK app itself losing the connection and not reconnecting cleanly.
@OffGridFreak the maths is the brutal bit — 1.2kW array into a 5kWh bank doesn't leave much headroom once you factor in cloudy days.
Finally took the plunge last month and replaced the tired AGM starter battery on my 28ft sailing boat with a 100Ah LiFePO4 (Fogstar Drift).
HazelPaddy | Posts: 312 | Location: Array
Running almost identical — MultiPlus-II 48/3000/35 with a 48v Fogstar Drift bank in a static setup.
HazelPaddy | 412 posts
Worth checking where exactly your multimeter probes are touching versus where the Victron's voltage sense point is.
in Q&A
3 months ago
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Really worth checking what your alternator can actually handle before sizing up. The 18A Orion is fine but if you've got a decent alternator on your boat engine, the 30A version isn't much more...
@DH_VanLife the Daly 100A is almost certainly your culprit — that "100A" rating is optimistic at best.
HazelPaddy | 634 posts | Solar & Batteries
@PanelGraham One thing nobody's mentioned — check your busbar connections between the parallel groups.
@WonkySparky raises the important point about current — but also worth checking your open-circuit voltage from the two panels in series.
Picked up on something @DaleBen and @PanelJulie are hinting at — the 48V battery side is arguably where UK buyers need to focus more than the AC output configuration.
Running one of these at 10kW...
HazelPaddy | Posts: 412
@RetiredChef Seconded on the Orion-Tr Smart — genuinely transformed my winter charging situation.
