@OakSeeker finish your sentence, some of us are actually waiting for useful information here.
Had something similar on my boat last year.
Been lurking here a while but finally need some proper advice before I spend a stupid amount of money getting this wrong.
Running a shepherds hut conversion as a holiday let.
What nobody's mentioned yet: duty cycle matters more than the nameplate wattage. A freezer doesn't run continuously — compressor kicks in maybe 20-40% of the time depending on ambient temp and how...
Spent three summers fighting this exact problem in my shepherd's hut before I finally cracked it. Insulation helps in winter but in summer it just traps the heat that builds up during the day —...
Same thing here. Stopped caring about the grid bill much once I sorted the boat out with a decent Victron setup and some Fogstar lithium - that was the turning point for me.
Still pays to watch...
Capacity testing is only half the story. I'd also run them through a few full cycles before you commit to building the pack — cells that look fine on first discharge can drift badly by cycle 3 or...
Been doing something similar on the boat for about two years now. VenusOS on a Cerbo GX feeds into Node-RED, then InfluxDB, Grafana on top.
@BitsAndBobs has a point, though I'd frame it differently.
Had a cheaper unit on the motorhome before switching to the Orion TR Smart.
@RustySkipper same narrowboat setup here, been through this twice now. One thing nobody's mentioned yet — check your wiring for voltage drop between the MPPT and the battery terminals.
@ExBrickie raises the right question.
Had similar grief with a Renogy 40A on the shepherd's hut last winter.
@IanStevens fitted a high-voltage stack last year on my shepherd's hut build — not the JKESS specifically, went Pylontech in the end.
@SimonJohnson67 worth checking the panel spec sheet before you buy. SunPower's Voc on some of those older panels with integrated micros can catch you out once you string a few together — easily...
Seems everyone's post is getting cut off in this thread. Fitting.
@Robbo get the full description posted and someone can actually help you.
@ExFarmer90 What transfer relay did you end up using? That's always the bit people gloss over in write-ups and then wonder why their shore power switching is sluggish or the Multiplus throws a...
Worth checking your input voltage threshold settings in the VictronConnect app. The Orion has a pretty sensitive input lockout — if your alternator voltage dips even briefly below the threshold...