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The Samsung Galaxy Z Fold4 has a 4400 mAh dual battery that supports 25W wired charging, 15W wireless charging, and 4.5W reverse wireless charging. The phone is powered by a non-removable Li-Po battery and is advertised as having enough capacity for all-day use, with the wired charging reaching 50% in about 30 minutes with a compatible charger.
The Samsung Galaxy Z Fold4 has a 4400 mAh dual battery that supports 25W wired charging, 15W wireless charging, and 4.5W reverse wireless charging. The phone is powered by a non-removable Li-Po battery and is advertised as having enough capacity for all-day use, with the wired charging reaching 50% in about 30 minutes with a compatible charger.