Hi guys. Brand new here from Austin TX. Your forum has been a wonderful resource. Thank you. I ended up with a lime green '15 that was only driven about 324 miles a month, not a scratch on it. I'm not positive but I don't think the previous owner didn't DCFC much due to the cobwebs I found under the orange flap
I was also smiling when I found a nice aftermarket level 2 EVSE in the hatch. A small bit of luck I guess. I changes the cabin air filter, put some speakers in and tinted the two un-tinted windows to match and I'm all set for now. My 10 mile total commute leaves lots of juice left for tooling all over town. Even here in the hill country I'm getting over 5.0mi/kwh so happy there too. I have only seen 1 other blue Spark EV here in town but there is no shortage of Leaf's and Tesla's.
Living in Texas (where it might get very hot) I would suggest not filling your Spark (to full) every time you plug it in. By now you should have figured out about how many miles of range show on the guess-o-meter when full. So, just figure out 'about' how many miles of range you are comfortable with when leaving home, and fill up to that, not more than about 80% full. Yeah, it involves thinking about it, and a small bit of mental calc ("gee, it's showing 35 miles, and it normally shows 100 when full, so I want to add about 45 miles, and that's about 3 hours on the level-2 EVSE - I'll come out and unplug in 3 hours."). It becomes 2nd nature and really easy to do after about a week.
Keeping the range of the battery between 30-80% *in general* should help prolong the life of the battery. You shouldn't worry about it too much (say, if you fill to full "by accident"), but if your "default" mode (when it is easy) is to baby the battery, then your battery might just baby you over the years.
Some people say it isn't necessary, but my reasoning is that if an extra 15 or 45 seconds of thinking or planning or doing when parking the car *might* prolong the battery health, then it is worth doing even if it has no effect at all. Well, so long as you don't fixate on it - just try and do it most of the time.