Just switched from Fitbit products to Apple Watch. Purchased the Series 3. How long should a full charge last? My Fitbit lasted 3-4 days. I am barely getting 36 hours on my new Series 3?
Apple Watch Series 3, watchOS 5
Take a look at this, Apple Watch - Battery - Apple. There is a section about the Series 3 Watch Battery.
Depending on usage, that is quite good battery for the Watch. The more you do with the Watch, which is more than can be done with the Fitbit, the less time the battery will last.
Battery life for Apple Watch Series 3
