[Ortep]

Yes a Cybook has an execelent battery life. I don't even carry a charger on trips that last under a week. Of course it depends on how often and how long you read. We have one member that never switches his reader off and he says it lasts only 100 hours. But that is more than 4 days. If you swich it off during the night you will get 33% more time if you switch it as soon as you wake up. That will give you almost 6 days. But you'll get the idea. Even if you leave it on 12 hours per day, it will last 8 days.