What is reverse charging?
The reverse-charge technology is usually equipped in the big battery phones (over 5000 mAh), which support OTG function. These smartphones are equivalent to power banks, are able to charge the compatible devices like cellphone, TWS earbuds charging box, Bluetooth speaker, smartwatch and more. Only requires an OTG cable to connect. It means that the weight can be reduced, thus this is very useful when outdoors. For campers and hikers, they are the best camping power banks to replace the traditional power banks.
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