Apple Watch Series 6 battery drain compared to Apple Watch Series 3 battery life

I’ve notice my drain is higher than I would have expected as well. To answer specifically about the always on display yes. That will always lead to big battery drain. I’ll check mine for a few more days and maybe repair it if needed.

Hello JCommunity,

Thank you for reaching out in Apple Support Communities. We understand you're experiencing low battery life on an Apple Watch Series 6.

It's important to maximize the battery life on an Apple Watch, and we'd like to help.

Just to be sure, we recommend to review the battery condition of your Apple Watch by opening Settings > Battery > Battery Health.

If there's no issue with the battery health of the Apple Watch, let's ensure the paired iPhone is updated to iOS 14.01 and the Apple Watch is updated to watchOS 7.0.1. Here's how to perform each step, along with additional methods to isolate this behavior further:

1. Restart your iPhone
2. How to restart your Apple Watch
3. Update your iPhone, iPad, or iPod touch
4. Update your Apple Watch

Now, if these steps do not help, we suggest contacting Apple Support to review this further. You can contact them through this link here: Get Support

Kind regards.