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I also bought a powerCover of sage and have used for one week or two and found the strategy of charging is sooooo stupid. I had used kindle oasis 1 for two years, the ko1's powerCover had a better charging strategy, such as:
If the powerCover was put into ko1, the charging process will continue until the ko1's battery come to 100%, after that the charging process will be stopped, until the ko1's battery dropped less than 95%(I guess), or the powerCover was take out from ko1 and put into again, then the charging process will continue again. This strategy was good to protect the battery of ko1 and its powerCover.Some laptop's battery also use this statery.
And turn back the sage, if the powerCover was put into sage, then it will charging constantly until the sage's battery come to 100%. If you stopped reading and sleep sage, powerCover will also charging once the sage's battery dropped to 99%, the charging process will start and stop and start again and stop again, which will badly destory the battery life.
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