Been mulling something over that I reckon could be relevant to a few people here running three-phase setups.
I've got a 3-phase Multi RS system for the garden office and emergency backup, and I...
Worth checking your DVCC settings in VictronConnect before anything else. If "Use solar charger current limit" is ticked alongside a BMS-controlled system, you can get some odd handoff...
@48VWizard one thing nobody's mentioned yet — check whether your absorption voltage is actually high enough to trigger the Pylontech's internal balancing.
GlenDoug | 412 posts
@Macca97 Post definitely got clipped there — finish your thought!
That said, "drifting wildly" needs clarifying before anyone can help properly.
GlenDoug | 512 posts
Worth being precise here — "refusing to bulk charge" and "sitting in float at 60% SOC" aren't necessarily the same fault.
If it's genuinely skipping bulk...
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GlenDoug | 641 posts
One thing worth being precise about — your MPPT isn't really designed to track SOC accurately, it's a charge controller first.
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@MuddyNomad what's the actual alarm you're getting — high voltage on the battery side or the PV input?
Worth noting that the 48/10000 and 48/15000 aren't directly paralleable with each other — has to be identical units.
@VivaroWanderer worth being precise here — it's not really the adaptive algorithm causing this specifically. That's a separate thing.
@EssexCruiser is broadly right but missing a key detail — the ET112 is single-phase only and measures one circuit, so placement matters a lot depending on what you're actually trying to...
Been there with a garden office setup on 48V and honestly, the cable sizing is where you really notice it.
Been running similar wattage in my garden office setup and honestly, @DorsetSolar, you've nailed the budget approach.
The payback period's definitely tightened up. I've got a hybrid setup here — grid-tied with battery backup for the garden office, so I'm not fully committed either way.
Fair points all round. I've got one running between my van's alternator and a small lithium bank for the garden office setup—nothing fancy, just keeps things topped up when I'm running off-grid...
Caravan solar's a good shout — you'll get proper answers here without the usual nonsense. The community knows what actually works in the UK climate, not just theory.
Fair warning though: once you...
