Great points from @VictronMaster already. One thing worth adding — if you're regularly seeing cutouts around 40% SOC during cold snaps, it's worth checking whether your Victron has the low-temp...
Last week I finally caved and added a second 200W panel to my roof — took the system from a single 200W Renogy to a pair wired in parallel, feeding into a Victron 75/15 MPPT.
@RelayBuild worth checking your busbar and cell terminal connections before anything else. Even slightly undertorqued terminals create enough resistance that under high discharge you get a voltage...
Great points from everyone so far. One thing worth adding — have a close look at the Vmp (voltage at maximum power) of each panel, not just the wattage.
BenStewart | 47 posts
@CornishNomad great thread, Storm Darragh caught a lot of us out!
Worth flagging for anyone considering this — the Leaf's CHAdeMO port is key here, but newer EVs with CCS...
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