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3. Disconnect the adapter when the battery is fully charged.
NOTE:
If the battery is extremely low, you may be unable to power on the spro
even when it is being charged. In this case, try again after charging the
spro for at least 20 minutes. Contact the customer service if you still
cannot power on the spro after prolonged charging.
Powering On/Off Your spro
Ensure that the battery is charged.