http://www.engadget.com/2015/08/06/asus-zenfone-max/
ASUS put an insanely large battery in the ZenFone Max
you can even use the phone as a power bank to charge other devices.
你可以使用这台手机为其他装置充电
(变成可以打电话的ZenPower吗?)
it'll be a while until the ZenFone Max enters the market in October,
so ASUS is keeping other details