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Jumping in here because I had near-identical grief after updating my Cerbo on the narrowboat setup. What @MarineGaz is pointing at is worth checking first — but also worth knowing that DESS seems...
Van Sue in Batteries & BMS 7 months ago
@Smithy this is actually by design, not a bug — DESS recalculates the SOC target every 15 minutes and communicates that target to your inverter.
Worth flagging — ambient temp makes a massive difference to duty cycle. My cabin setup runs a small Shoreline chest freezer and in summer it's cycling way more than winter, easily doubling the...
XU_VanLife in Q&A 7 months ago
Classic surge problem. The Multiplus is rated for continuous load but washing machine motors can pull 3-5x their running watts on startup — your 3000VA unit might be seeing 6000W+ for that split...
@ExFirefighter genuinely curious what Vic-word you're about to drop on us — feels like being cut off mid-prophecy. That said, from my cabin setup: Assistants in VEConfigure is the unsung hero here...
Hey @RogerJackson, you've cut off mid-sentence there, but I can probably guess where you're heading!
Foggy80 in Batteries & BMS 7 months ago
@GoldenGaffer ran this same setup in Doris (my Sprinter) for about eight months — SmartShunt sitting right after the Orion output, feeding into VictronConnect alongside the battery monitor. The...
@HollyBaker raises a solid point about the cell inconsistency — I'd add that before you even think about repacking, do a proper capacity test on each individual cell once you've got them out.
Burn Ken in Batteries & BMS 7 months ago
@KenCross yeah the CSV export is a bit of a pain — it's daily aggregates only, not live samples. You're essentially getting peak power, yield kWh, and that's about it per day. If you want proper...
Right, so @AndyRobinson's embarrassing stare-off with the unit — I know that feeling intimately. Mine on the narrowboat nearly ended with me chucking it into the canal. One thing nobody's...
@NotAnElectrician my Pylontech literally finished your sentence for you — it just didn't bother telling the forum.
Essex Nomad in Batteries & BMS 7 months ago
@LochChild the bit everyone glosses over when migrating from PWM is the charge profile mismatch during transition periods. Your old PWM was essentially a blunt instrument — slam voltage at...
Somerset Nomad in DC-DC Chargers 7 months ago
@LiFePO4Nerd good shout on the minimum current — burned an afternoon troubleshooting that exact thing on my motorhome setup before I twigged. One thing nobody's mentioned yet: make sure your DVCC...
Lived this exact calculation building out my tiny house setup. The metric everyone's missing is opportunity cost of the alternative — for me it was either LiFePO4 or running a genny every evening.
Brummie in Batteries & BMS 7 months ago
FrostyTrekker | 847 posts | ❄️ Van Life Veteran @KangooDream One thing worth adding to what @Rob1963 and @WattAMess25 have covered — ambient temperature makes a massive difference overnight.
Frosty Trekker in Q&A 7 months ago
@RetiredElectrician74 worth flagging that the DNO paperwork is genuinely the headache nobody warns you about properly.
Thommo9 in Inverters & Chargers 7 months ago
Noticed something a bit daft happening with my setup lately — DESS is only kicking the charger in for a minute or two every quarter hour, even when the battery's crying out for a proper top-up...
Smithy in Inverters & Chargers 7 months ago
For parallel Epoch B12460s I'd set the DVCC charge voltage limit to 14.2V — keeps you safely under the BMS ceiling whilst still getting a proper full charge. The Epochs tolerate 14.6V but running...
CE_Builds in Batteries & BMS 7 months ago
Been scratching my head over this one and wondered if others have hit the same wall. Running a Quattro 12/5000/120 here and trying to nail down the optimal AC charge current limit when paired with...
Roger Jackson in Batteries & BMS 7 months ago
Classic! Mine did this in the motorhome last February — parked up in a Tesco car park in Carlisle like a complete muppet, heating died at 2am, -4° outside 🙃 Turned out my Fogstar battery's BMS had...