The Autohelm 2000 I have peaks at 5A and I've budgeted 80W a day, i.e. 10W x 8 hours. Have no idea how accurate that is since I haven't sailed it with that fitted yet. This might be a good ballpark anyhow, but more likely to be on the low side than high.
Remember that while you're manually handling or moored this isn't used, so the 80W may be assigned to something else at that time.
"The cure for anything is salt water... sweat, tears, or the sea" -- Isak Dinesen
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