Similarly to the Hero, the HTC EVO 4G uses a 1500mAh battery. However, instead of being rated at 4 hours of talk time, the battery on the EVO is rated 50% higher at six hours. We were a bit skeptical, especially with such a large display, but lo and behold we were able to achieve 18 minutes more than the rated time when we put our unit to the test. Most people are going to be using the EVO 4G for things other than talking though, and under heavy use we definitely had to charge our unit mid-day. This shouldn’t come as a surprise however and is in-line with other smartphones, as the newness wears off and we’re not fiddling with it every 40 seconds the battery should be plenty ample to last through the day for most users.