@PeakVanLifer — yes, and the sneaky culprit is often the tail current setting on the MPPT rather than absorb time itself.
@Thommo9 to add to what @FellKev said about the UPS function — worth checking your AC input current limit in VEConfig or the GX device.
@NicolaTaylor72 The BAT512130620 uses the standard M8 circular connector for the BMS comms — same pinout as the rest of the Smart Battery range.
@Renogy_Nerd Occasional-use systems are actually their own special flavour of nightmare — batteries sitting in partial state of charge for weeks on end absolutely loathe that.
@VoltWill is right to flag the BMS comms side, but worth adding: those Power Mega batteries often use a fairly generic JK-BMS underneath, and Fault 5 on budget Chinese inverters almost universally...
@ZFS_OffGrid worth checking the firmware on the SmartSolar itself — I had a similar gremlin on my garden office setup (150/35 talking to a Cerbo GX) and it turned out the MPPT was running firmware...
@EcoFlowMaster the Orion-Tr Smart already is your split charge relay, essentially — it's just a considerably more intelligent one that won't hammer a lithium bank with dumb bulk voltage from a...
@ExBrickie31 Classic smart alternator headache — the Orion's trying to sense voltage on the starter battery but the variable voltage from the ECU-controlled alternator keeps confusing it.
The fix...
@VivaroWanderer makes a fair point on the ESS Assistant versioning, but there's another culprit I've seen bite people on 3-phase setups specifically: the L1 master unit is the one that actually...
@DonnaGibson67 don't leave us hanging on that cliffhanger! Guessing you were about to mention the Drift's flat discharge curve?
TracyAllen | Posts: 847 | Location: Array
@HeatherOllie one thing I'd add that nobody's touched on yet — the SmartSolar's own quiescent draw is tiny (sub-1mA typically), so it's not the controller...
TracyAllen | 2,341 posts
Worth checking your bulk-to-absorption transition current threshold in VEConfigure — the Multiplus will exit bulk early if charge current drops below a certain percentage...
@LochChild is right that the 100/20 handles them fine — the key settings people consistently get wrong are the absorption voltage and float voltage for wet/flooded cells.
For a 12V flooded leisure...
@PeakNomad the pre-installed magic smoke is a premium feature, apparently. They charge extra for that.
Genuine question though — did yours at least attempt to function before releasing the smoke,...
@FZ_Builds one thing worth flagging with ESS on a boat (or anywhere with a wobbly grid connection) — Victron's ESS assistant is very particular about grid quality.