Hi All,

I am not sure which section to post this in but since one of the key items is a MX-60 I thought I would post here.

A friend of mine left 2 days ago on a journey to go all the way around Long Island NY in a solar powered boat. The boat is 24 feet long and has 6 125W panels as an awning on top to charge a 60 volt battery bank of golf cart batteries. The MX-60 charge controller provides a substantial boost in currentto the batteries. Late this hot and hazy afternoon, the array was putting out 4 amps at 91 volts and the MX-60 turned that into 6 amps at 63 volts into the battery. [img]images/smiles/icon_smile.gif[/img]

We had tremendous problems with spikes from the motor controller but after some filtering, the boat is running like a dream. Over 6.5Kts top speed and 3 to 4 Kts cruise. [img]images/smiles/icon_cool.gif[/img]

Ron

The Solar Boat is now over half way around Long Island.

Those are impressive efficiency numbers - 104%. Perhaps you rounded down on one side and rounded up on the other ?

Hi Larry,

Gary finished his trip around Long Island Sunday. [img]images/smiles/icon_cool.gif[/img]

Those figures were from the front panel of the charge controller which is in whole amps so there is a little round off.

With more carefull measurements with a Fluke 189 we got 94.3% at around 500W into the 60V battery bank. [img]images/smiles/icon_cool.gif[/img]

That's pretty impressive performance - any pictures to admire?