Many of us have a tablet or an extra phone (or more) that we keep lying around the house or office for media use, for reading or browsing, for testing, or maybe even as remote controls for smart home appliances. Thing is, 8 times out of 10, when you pick up this tablet or phone to use it, you discover the battery is completely drained because you forgot to put it on the charger and you haven't used it in a while so you didn't notice the low battery level.

The issue is multi-fold and hard to diagnose: sometimes there's a sleep bug in the processor, sometimes your Wi-Fi network is jammed and exacerbates the battery drain, and sometimes you have so many things syncing in the background that the device is constantly working and never really idle.

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