電池容量21,000mAhのスマートフォン発表　待受時間は94日間　重さ570g

With smartphones becoming more powerful each year, OEMs have to either bump the battery capacity or make the new chips more power efficient so that power users don’t run out of juice everyday. But, Oukitel has a solution for this issue.
https://www.gizmochina.com/2022/06/02/oukitel-phone-21000mah-battery-pack-94-days-standby/

Weight ≒ 570g
https://oukitel.com/pages/oukitel-wp19-specs