https://wccftech.com/samsung-foldable-smartphone-to-feature-flexible-batteries/

Another day another rumor; according to the latest one, Samsung’s foldable smartphone that is expected to debut in 2019 will have a flexible battery. The rumor has originated from China where industry insiders who are privy to Samsung’s battery-making process say that the company is about to make a major breakthrough.

Samsung SDI showcased foldable battery prototypes way back in 2014 so it wouldn’t be surprising to see the company make some leaps now. The 2014 prototype had a low capacity and it offered just only 210mAh of power. Needless to say, it was nowhere near what most smartphones offer now and what such devices need at the moment to stay running for at least a whole day.