Jonas Dalidd
Nissan Leaf fans design more accurate state-of-charge meter
Posted Aug 30th 2011 9:45AM

If you get enough like-minded individuals together, they can accomplish quite a lot. Take, for instance, a group of fans on the MyNissanLeaf forum who wanted a more accurate way to tell how much further they could drive their Nissan Leaf. They accomplished this goal by coding up a device that plugs into the OBD-II diagnostics port and returns the exact state of charge of the battery.
You might be wondering how that is any different than the existing state of charge meter on the instrument panel. Well, the problem with the OEM panel is that state-of-charge is shown as a 12-segement display on the dashboard. Since the Leaf's range can be anywhere from 47 to 138 miles, a single segment on the gauge could represent as little as four miles left. This lack of granularity can lead to some serious range anxiety when you are down to 1 bar and not really sure how much that bar means. Yes, there is the range output shown right besides the charge gauge, but that is only based upon your most recent driving habits, and only the driver knows what type of roads lie ahead.
With the new device, Leaf owners can see the exact state of charge as a percentage of battery life remaining, allowing them to extract every last mile without worrying about being stranded on the side of the road.







While people are pretty sure the U.S. government needs to do something about the country's mounting debt, raising gas taxes is not going to be a popular part of the solution. Recently, Rasmussen Reports conducted a national telephone survey and found that only 33 percent of U.S. voters supported a gas tax hike. A whopping 53 percent flat out oppose it, even if the increase was used only for building and maintaining the Interstate Highway System.



With gasoline prices soaring this year, one might assume, justifiably, that hybrid and fuel-efficient small vehicle demand must also be on the rise, mimicking the market situation in 2008. However, history may not be repeating itself this time around. AutoPacific President George Peterson says, based on a study by the consulting group, that "small car and hybrid consideration is not tracking anywhere near the rate of the price of fuel as it did in 2008." Of the 68,000 people surveyed, only 21 percent are seriously considering purchasing either a compact or hybrid vehicle. This is down from 34 percent in 2008. This isn't to say that no one is buying smaller cars – 
