As a longtime software author and publisher, I put the user experience first. The Plug-in Prius software should do what the user wants, preferably with the fewest user actions. The charging timer options do not meet these criteria. But simple additions could help. 1) There should be four charging modes instead of two.a. Charge immediately.b. Charge on timer – start at programmed time.c. Charge on timer – end at programmed time.d. Do not charge (even if plugged in. This is only for use with Entune.)2) The user should be able to set any of these as the default mode, which will operate if the charging timer switch is not pressed. Currently the default mode is always “Charge immediately.” In this scheme, two charging modes are easily available to the user. If the user plugs in without touching the timer switch, then the default mode operates. If the timer switch is pressed once, then the mode last invoked by the switch operates. How does this make charging convenient to the user? By setting the default mode to “Charge on timer – start at programmed time,” which I usually use at home, I don’t need to press the charging timer switch. On arriving at home, I just plug in. Suppose I also charge at work. On arriving at work for the first time, I press the charging timer switch to select the “Charge on timer – end at programmed time” mode, and program that time for a bit before the end of the work day. Now I can charge at home by just plugging in, and at work by pressing the switch once and plugging in. When I occasionally charge at other places, I press the charging timer switch repeatedly to select “Charge immediately.” Then the next time at work I must again select “Charge on timer – end at programmed time.” Entune should be able to switch the charging status to any of these modes, either immediately or at a selected time (and date). Example 1: I get home at 11 am. My time-of-use electric rate goes up at noon. So I plug in, select “Charge immediately, “, and program Entune to switch to “Do not charge” at noon. Example 2: I am leaving for vacation. I plug in (with depleted charge), set to “Do not charge,” and program Entune to begin charging three hours before my expected return home, so that I can run errands on arrival.