(1) Store hours do not necessarily imply charging hours. I starting charging at Home Depot this morning at 4:45AM, whereas the store opens at 6:00AM.

(2) I was going to comment on the relatively slow speed of a HD charger, but I don’t think it’s 110V trickle. This morning I charged for over an hour to recover from driving in from Hakalau. Seems long, but I don’t often top the battery off, and the last few % may come slowly. Later that morning, I charged about 2.6 bars in 70 minutes. Again a little slow compared to my house, but not as slow as trickle.  Also, the iPhone app says that I am charging at the standard (L2) rate, and unless a sensor is being fooled, that’s what’s happening. Another reason it might be slower is that the supply voltage might be closer to 208V than 240V at my off-grid supply.

From Mike Kane, Plug In America:

The HD chargers are probably more like 9% slower than your home charger.   That’s going to be the case with many of the public chargers.  The reason is that most commercial building are fed with 3-phase power instead of the single phase you have at home.  The 3-phase power is regulated down to 208 volts in these buildings while your home power is 240 volts.  The Amps stay the same, so you actually get less watts into the batteries for a given amount of time vs. your home charger.