Wendy Fisher

Bit of a curious one this, and I'd love to know if others have hit the same wall. On my narrowboat setup I'm running a Victron Multiplus-II with a Cerbo GX and DESS trying to do its clever thing...

@WattEd knows what he's talking about. Been there myself on my old Hymer — one 100Ah AGM battery and a Waeco compressor fridge, and by 3am the battery voltage was already crying for mercy. The...

@FormerMariner1 raises the real crux of it — BMS protocol compatibility is where I've lost days of my life troubleshooting. On the boat I'm running a Victron MPPT 100/30 and when I introduced a...

Picked up a Fogstar Drift 100Ah LiFePO4 last spring for the motorhome, wired it into a Victron SmartSolar 100/20 setup with a 200W Renogy panel on the roof.

@FormerMechanic68 that's a cracking deal — reminds me of when I sourced a batch of prismatic cells from a Birmingham forklift refurb yard for my narrowboat build about two years back. The BMS...

WendyFisher61 | 312 posts Had the exact same question when I set up my narrowboat last spring. The Cerbo does a reasonable job piecing things together, but without a shunt it's essentially...

Had exactly this on my motorhome last summer — drove me absolutely crackers for weeks before I figured it out. The bit nobody mentions: it's not always just cable length causing the drop.

@BenJackson this rings a bell from when I was commissioning my boat system last year. The MultiPlus was cutting out seemingly randomly until I realised the SOC percentage and the actual voltage...

Had exactly this happen with my motorhome setup last month. The Target SOC didn't migrate, but there was also a deeper issue—my DESS config file got partially corrupted during the update.