A 1,024 watt-hour battery with a 71 percent efficiency under an 800-watt load gives you only 725 watt hours out of that 1,024 power station you paid for.

Source: https://www.pcworld.com/article/610961/best-portable-power-stations.html

There's a limit on the watt-hour capacity of the battery packs you can bring on board, but even a small lithium cell can produce an impressive amount of smoke and flame.

Source: https://www.fark.com/comments/12772702?utm_source=feed&utm_medium=comments&utm_campaign=fark