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OK, one may charge the Apple Watch via computer USB port.
Some devices have a "Quick Charge", which I believe is 5 volts.
Can I use this quick charge with my watch charger on the watch?
Apple Watch Series 3, watchOS 4.2
Hi
Apple Watch can be charged using the Magnetic Charging Cable in conjunction with a USB port, an Apple 5W USB Power Adapter or an Apple iPad USB Power Adapter:
Check your battery and charge your Apple Watch - Apple Support
Apple Watch uses fast charging for the first 80% of battery capacity:
Batteries - Why Lithium-ion? - Apple
Expected charging times are around 1.5 hours to 80% and 2 hours from 0-100%:
Note that Apple advises that you can charge Apple Watch whenever you want. There is no need to let the battery discharge to any particular level first, nor any benefit to be gained from doing so.
Apple's tips for maximising battery life and battery lifespan on Apple Watch are detailed here:
Batteries - Maximizing Performance - Apple
You may find it most convenient to charge your watch nightly, overnight. The watch cannot be overcharged and the battery will not suffer any harm from regular charging. Charging will stop automatically when the battery is fully charged and start again if and when required due to ongoing battery usage.
Follow Apple's safety and handling instructions and also note that:
You may find (the optional) Nightstand Mode useful:
Use Nightstand mode on your Apple Watch - Apple Support
More information:
Keep Apple Watch within acceptable operating temperatures - Apple Support
Hi
Apple Watch can be charged using the Magnetic Charging Cable in conjunction with a USB port, an Apple 5W USB Power Adapter or an Apple iPad USB Power Adapter:
Check your battery and charge your Apple Watch - Apple Support
Apple Watch uses fast charging for the first 80% of battery capacity:
Batteries - Why Lithium-ion? - Apple
Expected charging times are around 1.5 hours to 80% and 2 hours from 0-100%:
Note that Apple advises that you can charge Apple Watch whenever you want. There is no need to let the battery discharge to any particular level first, nor any benefit to be gained from doing so.
Apple's tips for maximising battery life and battery lifespan on Apple Watch are detailed here:
Batteries - Maximizing Performance - Apple
You may find it most convenient to charge your watch nightly, overnight. The watch cannot be overcharged and the battery will not suffer any harm from regular charging. Charging will stop automatically when the battery is fully charged and start again if and when required due to ongoing battery usage.
Follow Apple's safety and handling instructions and also note that:
You may find (the optional) Nightstand Mode useful:
Use Nightstand mode on your Apple Watch - Apple Support
More information:
Keep Apple Watch within acceptable operating temperatures - Apple Support
A most complete and helpful answer.
Thank you, Johnathan.
Glad to have helped! 🙂
Can I Quick Charge Apple Watch?
