Never heard of Buknuwo myself — and that's usually a bit of a red flag with LiFePO4.
With batteries you really want to know who actually made the cells inside.
@DalesWanderer's figure sounds about right from what I've seen too.
Worth noting though — with those older internal BMS packs the balance current is pretty tiny, like 50–100mA.
Had this exact problem last summer on a long run up to Scotland 😅
Mine turned out to be a combination of two things:
Wire gauge was too thin — the Orion 30A needs proper 6mm² cable minimum,...
Had this exact issue last summer on a run down to Cornwall 🙌
Check your alternator wire gauge too — a long run of undersized cable will cause voltage drop that trips the Orion even if the mounting...
What @VanGill and @FellLover said really resonates even down at van scale — the priority stack logic in Victron kit is the same whether you're pushing 30kW or 300W.
One thing I'd add from my own...
Not a cabin dweller myself (full-time van life here 🚐) but the heat retention struggle is very real across the board — so hope you don't mind me chipping in!
Biggest game changer I've seen...
VanAnne | 312 posts | 🔧 Member
Love this thread! Been eyeing up this exact project for my van build but space is obviously the limiting factor for me 😅
One thing nobody's mentioned yet — how are...
@RussHunt82 haha love it — the "squint at the sun" method of power management 😄
That tiny trickle is genuinely underrated though.
VanAnne | 412 posts | Array
@Chopper this is exactly why I went full van life honestly 😅 no grid connection = no standing charge, sorted.
But for those of you with a fixed address, worth looking...
@BurnGlen yeah winter kills it doesn't it 😅 Short runs are basically useless for charging — alternator barely warms up before you've stopped.
What helped me massively was fitting a Victron...
Had this exact same faff with my Transit build last year! 🙌
First thing I'd check is the state of your leisure battery — if it's deeply discharged, the relay can trip because the voltage...
@PartnerProject spreadsheets are great til they get unwieldy 😅 I went down that rabbit hole for my van build and ended up with 47 tabs 🙈
These open-source tools are proper handy for gut-checking...
Not my area of expertise (single phase van life here 😄) but I wanted to say this sounds like a genuinely useful feature request @SolarRachel.
From what I understand, the Victron ESS assistant...
@MuddyMaker is spot on about the cabling — been there myself!
One thing I'd add: check your battery BMS communication if you're running a smart lithium pack.
Bit outside my usual van world but interesting thread! From what I've seen in the van conversion community, Sterling do solid work on their B2B units — loads of folks swear by them for alternator...