SailNet Community - View Single Post - Islander 36 electric inboard? diy
View Single Post
  #23  
Old 10-22-2013
Stumble Stumble is offline
Senior Member
 
Join Date: Feb 2012
Location: New Orleans Louisiana
Posts: 1,781
Thanks: 6
Thanked 39 Times in 37 Posts
Rep Power: 3
Stumble is on a distinguished road
Re: Islander 36 electric inboard? diy

Christian,

To pull 10kw at 12v, you need 620amps an hour. Assuming you want to use batteries for 2 hours, with lead acid batteries you would need 2400 amp hours of batteries (50% usable capacity), or roughly 24 normal sized deep cycle batteries at a cost or around $2,000 and a weight of about 1,440lbs. This is why battery powered propulsion engines are so rare.

It is doable if you are ok with very minimal run times, but 2-3 hours is of the far end of realistic. You also need to look at charging times. I haven't run the numbers, but my WAG would be 2-3 weeks with a 30amp charger.
__________________
Greg Rubin
Attorney
Reply With Quote Share with Facebook