Samsung Galaxy Z Fold3 User Manual page 15

Getting started
Charge the battery
Your device is powered by a rechargeable battery.
TIP While charging, the device and the charger may become hot and stop
charging. This usually does not affect the device's lifespan or performance and is
in the device's normal range of operation. Disconnect the charger from the device
and wait for the device to cool down. For more information, visit
samsung.com/us/support/answer/ANS00076952.
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