Is It Okay To Leave Apple Watch Charging All Night. All we have Lithium Ion or Lithium polymer batteries in our iPhonesThe charging process is completely different from traditional method. Youre not going to be damaging your Apple Watchs battery this way.

Leaving the watch on the charging dock after the watch is fully charged -and- when the watch is on will degrade the battery because the watch is still consuming power and will cycle between discharging and charging. The internal charging systems stop charging the batteries once they hit 100 and switch over to just keeping the watch alive off of the chargers power not the battery. Keeping a battery charged and charging at 100 isnt great for the cell.
The negative impact increases the longer the watch is in this state like over night while asleep.
Apple confirms youll want to charge your Apple Watch every night. Place your watch on its side with the buttons facing up. That means over time the battery will hold less charge than when it was brand new. When the charge drops a few percent the device is on and using current it will start charging again and top off and charge again.

