I was concerned about battery life based on accounts I’d seen on the web prior to using the EVO. Those concerns were unfounded, as I find the battery lasts all day with fairly heavy usage. Battery drain depends on how the phone is used, and with so many radios in the EVO it can be hit hard. I find that a little diligence is all that’s needed to stretch the battery out all day. With normal use the lowest the battery has drained on a given day is 11 percent left in the tank at day’s end.
You shouldn’t need to practice a “little diligence” to get better battery life.