Series 3 watch battery
How much does it cost to replace my battery on my series 3 stainless steel watch that out of warranty
Apple Watch Series 3, watchOS 5
Question marked as
Top-ranking reply
You can view all the repair costs for all Apple Watches (both in and out of warranty) here: https://support.apple.com/watch/repair/service/pricing
It appears as though a battery replacement for an out of warranty Series 3 is 79$.