Better Place owned those stations at Turtle Bay before they recently sold out to OpConnect. When Better Place owned them, you needed a Better Place fob (got one by signing up with them), and charging was free until April 2013, but it wasn't unlimited. There was a charge limit of 2 hours per day if I remember correctly.
I stopped using Better Place chargers even when it was free because the amount of charge was pitiful. If I remember correctly it was 208V/15A service, which got something like 8 miles of range per hour of charge.
Since OpConnect has taken over, I'm not entirely sure of their charging policy even though I signed up with them and got an OpConnect fob. Since Turtle Bay is probably the remotest destination on Oahu, OpConnect may have a one hour time limit and may give the first hour free.
I got a Better Place fob back in January/February 2013. It worked because I charged at their Aina Haina station a couple of times. Since Better Place has been bought by OpConnect, I know the original Better Place fob I got in Jan/Feb no longer works because I tried recently at the Polynesian Cultural Center with no luck.
I then signed up with OpConnect a little less than a month ago (
Register Account
). I did get an OpConnect fob in the mail, but have not had the opportunity to test it out. I'm pretty sure it costs money to charge with OpConnect, so I only got the OpConnect fob in case of an emergency since I do go to the north shore a lot.
Unless you plan to spend a more than 2-3 nights at Turtle Bay in which case vampire loss comes into play, you really don't need to use any of the OpConnect stations if you use even minimal planning.