Device Battery Life
Estimate how long your phone, tablet, or laptop battery will last based on usage patterns.
Estimated Battery Life
Battery life depends on your device capacity and power consumption.
Battery Life (hours) = Battery Capacity (Wh) / Average Power Draw (W)
Typical battery capacities: smartphones ~15 Wh, tablets ~30 Wh, laptops ~50-80 Wh.
Usage heavily affects drain: video streaming uses more power than reading, and screen brightness is one of the biggest factors.