When I had a phone that held a week's charge, the "low battery" notification meant I had a day's worth of charge left, so I never let that run out. Now, if some

When I had a phone that held a week's charge, the "low battery" notification meant I had a day's worth of charge left, so I never let that run out. Now, if something breaks my habit (travelling during the night, most often) the battery will run out in the middle of the next day with the low battery notification often being useless because I can't get to a charger within an hour or two.