Charging the Transformer
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•Use only the power adapter that comes with your device. Using a different power adapter may damage your device.
•Using the provided power adapter and USB cord to connect your
Transformer to a power outlet is the best way to charge the Transformer.
•The input voltage range between the wall outlet and this adapter is
AC
• To prolong battery life, fully charge the battery for up to 8 hours when using the Transformer for the first time and whenever the battery power is fully depleted.
•TF201 can be charged via the USB port on the computer only when it is powered off.
•Charging through the USB port may take longer time to complete.
•If the computer does not provide enough power for charging the
Transformer, use the wall outlet instead.
8 | ASUS Transformer Manual |