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Old 02-07-2014
miatapaul miatapaul is offline
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Re: Repowering with an electric engine?

Quote:
Originally Posted by whippet99 View Post
here are stats i got from Electric Yacht, 5kw motor on C&C 27. if keep speed to 3 kts, these have great range

Flooded AGM LiFePo4
200 ah 200 ah 200 ah
Kts Hrs Nm Hrs Nm Hrs Nm
3.0 16.6 50 16.5 49 16.5 49
3.8 7.0 26 7.6 29 8.0 30
4.8 3.0 14 3.5 17 3.8 18
5.4 1.8 10 2.2 12 2.5 14
Is that running your batteries down to there full capacity (often how numbers like this are stated when trying to sell a system), if so then you will be replacing the batteries a couple times a year. You don't want to take them down past 50% capacity. And at 3 knots you will have to have some pretty good patience, and no head winds, or wave action to go through. I think that is what will kill the range really fast.
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