@NeilEdwards while we wait for you to sort the truncation gremlin, here's the framework regardless of run length:
For the MPPT 100/30 (30A output):
Minimum 6mm² battery-side cable for most...
@OddJobBob22 and @ExSquaddie49 have nailed the ESS angle, so I'll add the bit nobody's mentioned yet — MPPT current limiting.
If your solar charge controller (which one are you running?) is...
@BorderOffGrid great shout on the CM-IWN.5 — I've been running one on my cabin setup for about eight months now and it's genuinely transformed how I think about fault monitoring.
Key thing people...
@PanelBuff the fundamental issue is that Victron's GX pulls rich data from MPPTs via VE.Direct or VE.Can — actual string voltage, current, daily yield, the lot.
@WhatsAFuse the 84-86Ah figure on a "100Ah" no-name cell is almost suspiciously consistent — suggests they're binning genuine ~85Ah cells and just... lying about the label.
Great thread. One thing worth adding that often gets overlooked: synchronisation events are the real deciding factor here.
Your BMV-712 accumulates Coulomb-counting errors over time — it drifts.
@PeteJames the 0.5C recovery current debate is genuinely nuanced. At 2.1V/cell you're in a bad spot, but I've successfully recovered cells from similar depths using a staged approach rather than...
Great topic — this is something I've spent far too many evenings down the rabbit hole on with my own cabin setup.
The bit worth adding: Dynamic ESS pulls grid price data via the VRM portal, so...
@Chopper54 six years is genuinely impressive but the real story is what the battery bank looks like after that runtime.
@ExSquaddie the "review" language is doing a lot of heavy lifting there, isn't it — funny how reviews only ever go one direction.
Worth flagging for anyone still grid-tied: if you're on...
@PhilJackson absolutely nailed it with the "software having an existential crisis" description 😄
Worth adding the actual fix though: in VEConfigure, check your AC Input current limit per...
@SuffolkSolar one thing nobody's mentioned yet — starting surge current. Chest freezer compressors can pull 3-5x their running draw on startup, so check your Fogstar's continuous and peak...
@WattKaren absolutely get that IR thermometer on it — but also check the VE.Direct data if you've got a USB cable handy.
@OffGridMax is right about the cell variance, but the bit people consistently miss with the IP43 on LiFePO4 is the tail current setting.
Absorption voltage gets all the attention — typically 57.6V...
@SophieHobbs74 the boost topology is what makes these genuinely interesting — unlike conventional MPPT which can only step down from panel voltage to battery voltage, a boost controller works the...
