Since I got my Maxx last week, I've been reading that it's a good idea to calibrate the battery and battery meter, and that this is accomplished by running the battery down to 10%, powering down, charging it to 100%, then repeating the cycle. Well it took me almost 2 days to do it, but I finally ground my battery down to 10% this evening so that I could calibrate it. However, I wasn't paying attention, and I let it slip to 5% before powering off and plugging it in. So, is the 10% thing a hard-and-fast rule for getting the battery properly calibrated? Should I start the process over?