I have been using this tracking device for approx. one month now, and I will say it does a very good job.For the first week I used it with the original battery. Even though the instructions say not to put it in the trunk or the engine bay, I tried it anyway, first in the engine bay (placed high on the inside of the fender) and then the next day in the trunk (high on the inside of the fender). The tracker did a good job in both places and the accuracy was very good. The battery life with the original small battery was pretty good, it took about two days to go down to 50%. I had the settings on 1 minute (the most frequent currently available). The vehicle wasn't in constant motion all day, so keep in mind, if it was, and reporting every minute, it would consume more battery, so you could always change to a less frequent time (5, 10, 15, 30, 45, 60, 120). The history of where the tracker has been is being recorded based on these reporting times. You can look up past history many ways (the last few hours or a date range). This info. can be downloaded if needed. I ordered the waterproof case with the larger battery and have been using that for the last three weeks. The battery life with it is a huge improvement (it took two weeks to go down to 50%), and I used it in the trunk and engine bay also with no negative issues. I have talked with Customer Service a few times to report my thoughts, and I will say, they are as good as anyone could hope. I have tracked my device with an iPhone/iPad and on a PC using various browsers. I will say that if you use an iPhone/iPad, and you want to see "live tracking", there are a couple of apps that you can use. The newer Tracki app still has a few bugs they are working out (as far as seeing live tracking), but there is another app called Trackimo, and it doesn't have all the "bells and whistles" of the new app, but "live tracking" works well on it. Keep in mind the history of the device is being recorded (no matter what app or device you use to check it), so you can always check it out from any computer with a browser. There are many applications someone could use this device for, and the tracker is so small, you could put it anywhere.