"Revolutionary Stacked Battery Technology Expected in iPhone 15"
The upcoming iPhone 15 lineup may feature stacked battery technology, which increases energy density and prolongs the battery's lifespan. Stacked battery cells use a lamination technique that allows for more active material and higher overall capacity. This technology is already used in electric vehicles and other industries. Additionally, there are rumors of Apple exploring 40W wired charging and 20W charging via MagSafe, but the source's credibility for Apple leaks is uncertain.