Hi all, I've recently bought a new tablet and cell phone, and one important thing I'm focusing on is extending the battery lifetime as long as possible. To that effect, I've only recharged the battery when it is completely empty, and always charge it to 100% before unplugging it again. However, I just heard it may be better to always keep the battery in the 50-80% range at all times. According to that theory, I should recharge the battery whenever it gets below half, not when it is completely empty. I've also heard that batteries are advanced enough now that you don't need to worry about specifics in charging it -- just charge it when it's low, for as long as you can. What's the best way to keep the battery healthy for the longest possible time?