With the Z Fold8, Z Fold8 Ultra and Z Flip, Samsung turned a new chapter in its smartphone hardware history by incorporating silicon-carbon batteries for the very first time. The Fold8 Ultra in particular got a 600mAh boost over the Fold7 thanks to its higher-energy-density cell. Galaxy Z Flip8, Fold8 and Fold8 Ultra EPREL labelsThis means that the batteries on the new phones will deteriorate faster than traditional lithium-ion cells with graphite anodes. This is a well-known limitation of silicon-carbon batteries and should not come as a surprise. Galaxy Z Fold8 Ultra (EPREL) • Galaxy Z Fold8 (EPREL) • Galaxy Z Flip8 (EPREL)