You would probably want a controller that would charge 48 volts of batteries. Reduced weight and seems to be the proper voltage for your controller. If there are extrsa panels avsilable. Where abouts are they
On Friday, November 9, 2018, 9:53:46 AM PST, raytclark@netzero.net [electricboats] <electricboats@yahoogroups.com> wrote:
I just ran across 70 v - 100 watt solar panels at $65 ea. Do 70 volt panels make sense on a boat used at a lake about 6 miles across. If used with 6 nominal batteries (72 volts / 80 Amps) and a golf cart motor controller,
the motor has a typical gearbox 2.83 to 1 and a Martec folding prop 12 x 12
A. At full sun, does 70v (4 panels) 400 watts mean that a 36/48 volt motor with only 400 watts will try and turn full speed but with 2000 lbs hull displacement, it will max out at 400 watts going about 3 knots?
B Does 70v try and overheat the motor, (as described above) or is 400 watts the power that the motor is absorbing with no issues.
Thanks to all for looking -Ray
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Posted by: Mark F <mark.internet@yahoo.ca>
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