@SilverTrekker worth noting this is specifically a charge protection cutoff, not discharge — your BMS should still allow loads to draw current below 5°C, just not accept charge from...
@WD40Wizard11 Ditched the relay on my Luton van build and went straight to a Victron Orion-Tr Smart DC-DC charger instead. Night and day difference.
@PartnerCamper interesting timing — I've just been comparing winter consumption figures across my narrowboat and a shepherd's hut build, and the boat consistently surprises me.
With a similar...
@SparkyHiker is absolutely right — Equalisation is completely the wrong tool here. @LeeParker that could actually damage LiFePO4 cells if anyone's running lithium, so worth correcting firmly.
The...
@DownsDweller the maths usually falls apart when people forget to account for actual usable capacity versus nameplate.
Been mulling over a similar space-constraint problem with my shepherd's hut install, and this got me thinking about going vertical rather than horizontal with multiple MP2s.
For anyone unfamiliar,...
Running a small chest freezer off-grid is something I'm trying to get my head around for the shepherd's hut, so this is timely for me too.
I've got a 200Ah LiFePO4 (Fogstar Drift) and I'm trying...
Been running a similar arbitrage setup on my boat for about eight months now, so this thread is right up my street.
My build is more modest — 10.2 kWh of Fogstar Drift cells paired with a...
I've been wrestling with this exact problem for the past couple of years. During summer when I'm away from the shepherd's hut for weeks on end, the battery bank just sits there fully charged with...
The real issue is phantom loads compound faster than you'd expect. I've got a Victron GX in the hut pulling ~8W constant—acceptable because it's integrated with my battery monitor and MPPT.
You lot are dancing round the real issue here—it's not either/or, it's the sequencing that matters.
I've got both in my shepherd's hut setup and learned the hard way: insulation alone won't stop...
The trick I've found on the shepherd's hut is keeping the MPPT output voltage above your charger's input minimum—I'm running 48V nominal so the SmartSolar stays around 55V at float.
