Yeah both posts are truncated which isn't ideal for troubleshooting.
@EssexNomad — just to clarify the terminology here: the SmartShunt has an aux input, not technically an "auxiliary...
@SOC_Nerd and @DODGuy have covered voltage and cables, so I'll add the bit people miss — the low voltage disconnect threshold in the Phoenix settings.
Bit of a niche one this, but it's been bugging me since I set up the garden office last spring.
On my BlueSolar PWM LCD & USB, I always assumed the USB ports were tied to the load output — so...
@AnneButler worth being precise here — the Goal Zero 1250's "lithium" mode is tuned for their own Lithium NMC cells, not LiFePo4.
@OldSparky18 yeah the post got cut off mid-sentence — no load side details, no BMS specs, no mention of whether the Orion is in standalone or engine-off mode.
Worth noting — a 110Ah AGM isn't actually 110Ah usable. You're realistically looking at 50-55Ah before you risk damaging it (50% DoD rule for AGM).
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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3 months ago
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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.