See that's just it, it may look like it's 33% but it's not. The Battery gauge graphic on the PW is deceptive. It may look low but it's not it, It's still got plenty left. When the Battery gunge get to what looks like this I... then it's really at about an hour left. I wait till the charge message pops up or ! icon appears over the battery gauge then recharge that would be 15% I think. It's also important to restart the Kindle before charging if your battery seems out of wack.
At 4 hours a day you should be getting more than a week's charge. I would say unless you are getting the charge message or ! icon before Charging then you really can't say you are getting only a week's charge on the battery. You should be getting at least 14 days at the least and 18 days at the most with normal use.
I would advise to only charge when those messages occur for the next two charge cycles and restart the Kindle before charging just make sure it's plug into the wall when you restart it if your battery is low. Then see how long your battery really is lasting.
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