Charging method is as follows:
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The opening port is at the left end of the circular shaft, turn the groove counterclockwise to open, and replace it. (Left end of the circular axis: the other end of the keyboard power button)
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If you choose the Apple Battery Charger, you can recycle the rechargeable battery, which is convenient for environmental protection.
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How to take out the battery: There is a round aluminum alloy lid on the left side of the keyboard, and a coin is embedded in the concave above the lid. Turn the lid counterclockwise to open the lid.