Hey @Thommo9, good timing on this thread! I went through exactly this with my SPH3000 last spring.
The key thing that tripped me up was the DIP switch settings on the BMS side — Growatt's SPH...
Cheers for bringing this up, @RayWatson81. I've been following the Drift's evolution myself, and it's clear they've put proper thought into the engineering rather than just slapping a fancy case...
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