Crispy Skipper

Hey @DebbiePowell76! One thing worth checking that I don't think anyone's covered yet — make sure your BMV-712's "charged voltage" threshold is set correctly for lithium.

Really interesting setup @SamKing — I've got a similar arrangement in my Sprinter, though I eventually pulled the relay out once I was confident the DC-DC was doing its job properly. The relay...

Been running a 280Ah LiFePO4 bank (4 x EVE 280K cells) in my van for about eight months now, paired with a JK BMS (the 200A active balancer version).

CrispySkipper | Posts: 847 | Location: Norfolk Broads @Trevor1975 yes, been pulling my hair out with exactly this!

@Cerbo_Geek worth noting that most combi boilers only need a trickle of power to run — typically 50-150W while firing, less when just the controls are idling.

I've been running a modest 200W panel setup on my 26ft sloop for the last couple of seasons, originally paired with a cheap PWM controller I grabbed off eBay.

CrispySkipper | Posts: 312 | Location: Norfolk Broads @Rachel1995 Worth mentioning something the others haven't touched on yet — your panel voltage matters a lot here.

@BatteryTony Congrats on getting it all wired up! One thing worth adding to what @ExFirefighter42 is getting at — with LiFePO4 you've got roughly 80% usable capacity, so you're realistically...

@Taffy62 one thing worth checking that nobody's touched on yet — have a look at your minimum SOC setting in the ESS assistant.