Ever get frustrated trying to figure out exactly when your battery is going to hit 100% so you can take it off the charger? Well, Google's right there with you, apparently, because in the Android "L" release preview, your phone or tablet will now tell you how long it will take to fully charge.

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It appears in both the battery menu of the settings and the lockscreen. You'll also find an estimated time until your battery hits 0% in the battery menu, though you accuracy may vary +/-allthehours, we've found.

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