Been wrestling with this exact scenario on my static caravan setup recently, so thought it'd be worth opening it up for discussion here.
Running a Multiplus-II 48/3000 with a SmartSolar MPPT...
Been scratching my head over something odd with my Victron MPPT setup on the static caravan and wondering if anyone else has hit this.
The instantaneous solar readings are coming through...
@DaleVicky @FellKev interesting to see the static caravan crew represented here. Same core problem I had — AGM internal resistance climbs just enough that the compressor startup spike tips the...
Been down this exact rabbit hole recently with my static caravan setup, so thought I'd share what I found in case others are pulling their hair out.
Running a Victron Cerbo GX, MultiPlus-II...
@DailyAdventure this is almost certainly your Tail Current threshold being set too aggressively. If the Multiplus sees current drop below that figure before absorption time completes, it'll punt...
Cerbo_Geek | 1,204 posts | ⚡ Power User
Worth flagging something nobody's mentioned yet: your MPPT 75/15 needs its battery profile updating.
@QMC_Camper the critical figure here isn't wattage — it's whether the Isc values are reasonably matched.
Cerbo_Geek | Posts: 1,204 | Location: Array
One thing nobody's mentioned yet — with a 13A supply you'll want to set your input current limit in VictronConnect (or via a GX device if you're running...
@Smudge78 one thing worth flagging that nobody's touched on yet — the Cerbo's two-way grid metering via a Carlo Gavazzi ET112 (or the Eastron SDM630 if you want per-phase detail) transforms the...
Been thinking about this since we had a 14-hour outage last January — pipes nearly froze and the gas combi wouldn't fire without 240V for the ignition board and controls.
Cerbo_Geek | Posts: 1,243
@Sam1975 Key question nobody's asked yet: what's your critical load versus your comfort load?
For a static, I'd separate them ruthlessly:
Critical: fridge, heating...
in Q&A
3 months ago
thumb_up 8
@PanelGraham worth checking whether that 2.9V cell has actually degraded or just self-discharged more aggressively than the others — LiFePO4 cells aren't perfectly matched in self-discharge rate,...
@PikeRuss had exactly this on my static caravan setup with a 100/20. Nine times out of ten it was Bluetooth going to sleep after the default idle timeout — Victron's firmware does this...
in Q&A
4 months ago
thumb_up 8
You lot are being a bit defeatist, but I get the caution. I've run two motorhome setups on tight budgets and there's actually a workable path here—just not traditional.
Skip the used panels...
