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So my device has an input of 5V 0.7A, but the cable isn't detachable from the plug so I need to use a different USB to micro-USB cable.

My power bank can output on 2 ports, DC 5V 1A and 5V 2.4A

If I plugged in the device to the 1A port, it should only draw 0.7A and not 1A right? And would the same go for the 2.4A port?

The device is a wireless charger, if that's relevant. I just want to make sure I don't fry my device or watch.

El-Chief
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  • the voltages need to be the same, in your case they're all 5 V so that's OK. 2) the current needed by the power consuming device (in your case the wireless charger) needs to be less than what the power delivering device can deliver. Your consumer consumes up to 0.7 A, your power delivering device can deliver 1 A or more. So that's OK as well. The actual current that flows is set by the power consuming device (the wireless charger) so it's 0.7 A (or less if it needs less). The power bank does not determine the current.
    • – Bimpelrekkie Aug 23 '19 at 10:13
  • Got it! If you want to post that as an answer, I'll mark as answered. – El-Chief Aug 23 '19 at 10:17