Electric Battery and motor boating

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RobLL

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Recharge Wrap-up: Electric Bayliner conversion, China considers EV mandates

Audi updates 2017 A3 E-Tron; Hyundai delivers Tucson Fuel Cell to Quebec.





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John Beltz Snyder

An electric mobility enthusiast converted a Bayliner boat to electric power. Using 10 Tesla modules to build a 32-kWh battery pack, Scott Masterson's 2016 Bayliner 175 now uses an electric motor in place of the original 3.0-liter Mercruiser engine. With a top speed of about 53 mph and a range of about 25 miles, Masterson can enjoy a nice cruise on the water without the accompanying gas fumes. He says the conversion wasn't all that complicated, and it took him about three months of part-time work. Check it out in the video above, and read more at Electrek.
 
Certainly interesting. The source for his used Telsa battery modules quoted $990 for each 3 KW 57 volt bank. That is super cheap... He has 32 KW or 11 of those- is going to be over $10,000, There is also the cost of controller, contractors, lots of cables, and inverter, and AC 3 phase motor...

I believe that the author felt that the total weight of the Bayliner was close to 1900 lbs, not the conversion--and stated that the weight was about the same as gas engine.

If you were to use off the shelf Li ion batteries, the cost would be considerably more than the $10,000 for these used batteries. The Torqeedo batteries which are 345 volts would cost $50,000 for the same energy equivalent, and the motors would be over $45,000 (160 hp) $22,000+ for 80 hp--so for a C Dory 22, you would be looking at $100,000 for off the shelf 80 hp system comparable you would be at over $75, 000. I think right now boats can easily be built which can go 75 miles--perhaps at slower speeds than the 53 MPH claimed for the Bayliner--.
However it would be cost prohibitive.

It is cost, not technology itself. If my calculations are correct you could outfit a C Dory 22 which would go 75 miles, at 4 to 5 knots for about $75,000 using off the shelf Torqeedo motor, battery and controller. Of course then there is the challenge of re-charging the battery as you progress along the cruise...

It will be here sometime--Thanks for bringing this information.
 
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