Not bad.
an electronic engineering certification.
An a+ certification as well.
100% > 0% then fully charged using a wall socket or laptop?
Continue using LTE, don't go on Wi-Fi. Then post the battery results. Using Wi-Fi really conserves my battery, too much so. With cellular data I can only get like 4 hours of usage, maybe.
Not good so far. Significantly worse than my 3GS which I've been using for three years!
Early days.