Is this the biggest battery we've ever seen in a smartphone?
Amazon.com: 12v 12000 mAh Battery Replacement for Portalac PE12V12 : Health & Household
Top 10 - Battery Life Beasts (5000mAh+ ONLY) | Review Hub
Samsung's latest midrange phone has a whopping 7,000mAh battery - The Verge
Amazon.com: Zeee Premium Series 3S Lipo Battery 15000mAh 11.1V 100C Soft Case RC Battery EC5 Connector with Metal Plates for RC Car Truck Tank Racing Hobby Models : Toys & Games
World's Highest Battery Capacity Smartphone - 18000 mAh Battery Phone from Energizer | MWC 2019 - YouTube