You understand why a casual reader, when encountering the statement, "I use 3% of my battery in 90 minutes on my laptop" will raise an eyebrow, right? The extr

You understand why a casual reader, when encountering the statement, "I use 3% of my battery in 90 minutes on my laptop" will raise an eyebrow, right? The extrapolation to total battery life is a little mind boggling.