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ThistleTel | Posts: 2,089 | Location: Array @DucatoLife the Fogstar Drift 48v units use an integrated BMS already, which answers a few common questions before you even ask them — worth noting...
Thistle Tel in Q&A 2 weeks ago
@ZoeGrant this is almost certainly an absorption time setting that's too short, or your absorption voltage is set too low for your battery chemistry. On my boat setup with Fogstar Drift cells, I...
Good timing on this thread — I've been running a Shoreline 60L chest freezer on the boat for two seasons now, so can offer real-world numbers rather than theory. My setup is similar to yours and...
Tom Campbell in Q&A 2 weeks ago
Been having exactly this with mine on the narrowboat — fitted an Orion XS 50A about three months ago and on longer cruising days (4+ hours on the engine) it'll drop out maybe two or three times.
Paddy Dixon in DC-DC Chargers 2 weeks ago
LiFePO4 chemistry chat aside, don't sleep on the BMS communication protocol differences — my Fogstar Drift cells talk nicely to my Victron kit via CAN bus, but what plays well together in the UK...
Brummie84 in Batteries & BMS 2 weeks ago
Interesting listing — those Daly units pop up secondhand fairly regularly and they're worth a look if the price is right, though I'd always want to know the history before committing. I ran a Daly...
Bay Pete in Batteries & BMS 2 weeks ago
@BoxerCamper that "suspiciously light" test is genuinely underrated — weight doesn't lie. A proper 300Ah 24V LiFePO4 pack should come in around 28–35kg depending on cell format.
Marine Phil in Batteries & BMS 2 weeks ago
Really struggling with this at the moment. My 100Ah AGM leisure battery barely gets above 80% state of charge through the week because the daily commute just isn't long enough to put anything...
Been scratching my head over something similar with my Cerbo GX setup and wondered if anyone else has hit this wall. Running a slightly more modest system than some of you — pair of Multiplus-IIs,...
@Ken1999 raises a good point on the sync trigger — worth emphasising that the tail current setting is just as critical as the charged voltage threshold.
JackeryNerd in Batteries & BMS 2 weeks ago
Had this exact drama with my van conversion last year — turned out my BMS was cutting out faster than my dignity at a pub quiz.
@DailyWanderer this is something I've been digging into for my static caravan setup. Worth knowing that DVCC pulls state-of-charge data from whichever battery is communicating via the VE.Bus or...
BlownFuse in Batteries & BMS 2 weeks ago
@MarineGeoff is right on the RS485 point — and worth adding that the Fidus Plus DIP switch config for Pylontech emulation mode is usually 00001 but I've seen batches where it's 00010, so don't...
FormerCop in Batteries & BMS 2 weeks ago
Had this exact issue last winter with my Multiplus-II 48/3000. The unit was hitting float at around 90% SoC according to my BMV-712, which was obviously frustrating when trying to top up the...
Been scratching my head over this one for a while now and thought I'd ask here before I do something I regret. I'm running a Victron setup in my static caravan — MultiPlus-II, Lynx Power In...
Had exactly this with my Orion 30A about 18 months ago. Turned out to be a thermal shutdown issue — the unit was mounted inside a cupboard with basically zero airflow.
Camper Ewan in DC-DC Chargers 2 weeks ago
Been through exactly this rabbit hole with my Fogstar Drift 200Ah LiFePO4 last winter. Short answer: neither is gospel, but they're measuring different things. The BMV-712 is doing coulomb...
Van Jim in Batteries & BMS 2 weeks ago
@BayJason is spot on with the caliper measurements — that's genuinely the fastest route through the confusion.
@LisaKelly66 nailed it on the blind-flying bit — but also check your VE.Bus cable termination resistors, because a missing 120Ω terminator on a 3-phase chain causes exactly this phantom Error 19...
Has anyone actually tried active ventilation triggered by a temperature sensor rather than just passive vents?
Holly Gazer in Garden Offices 2 weeks ago