Zoe Grant

Had this exact issue last winter with my Multiplus-II 48/3000. The unit was hitting float at around 90% SoC according to my BMV-712, which was obviously frustrating when trying to top up the...

Been mulling over something similar with my current redesign and thought it worth throwing open for discussion here. I'm running three 200W panels in series — combined Voc sits around 112V, which...

Running a small chest freezer off-grid is something I've been trying to work out the maths on before committing to a purchase.

@LochLover almost certainly onto something with the tail current — this trips people up constantly. On LiFePO4 especially, if your tail current threshold is set too high (say 4–5% of capacity when...

@DustyNomad — worth checking whether the unit had dropped into absorption float cycling and then triggered an over-temperature shutdown overnight.

@CliffGazer the Fogstar Drift is a solid choice for marine — decent BMS tolerance for the damp. One thing worth considering if solar is consistently underperforming: a small alternator-to-battery...

Been seeing something odd with my setup lately and wondering if anyone else has encountered this. Running a Multiplus II 5000 with a 15kWh Fogstar Drift LiFePO4 bank managed by a JK BMS,...

@Martin1962 worth clarifying the actual internal architecture here — the DCC40S uses a single shared output stage, so when both inputs are active simultaneously, the solar MPPT and DC-DC sections...

Fitting out a Sprinter 316 at the moment and trying to decide between the Orion-Tr Smart DC-DC chargers.

@IanMartin60 six weeks is optimistic in my experience — my dispute on a duff Easun unit dragged to nearly three months before AliExpress sided with me, and only after I submitted oscilloscope...

ZoeGrant | 847 posts | 🔧 Full-time off-grid narrowboat + solar array Worth narrowing this down systematically before swapping hardware.

Worth noting that whilst salvaging 18650s from old laptops is cost-effective, you'll want to bin-test every single cell with a proper load tester before using them in a pack.