Since the last software update my Apple Watch won’t get past 8pm without being down to 10% charged. Didn’t have an issue before

Fakey,

We suggest making the following adjustments to ensure that you're getting the most out of your Apple Watch battery:

• During running and walking workouts, turn on Power Saving Mode to disable the heart rate sensor. To do this, open the Apple Watch app on iPhone, go to My Watch > Workout, and turn on Power Saving Mode. Note that when the heart rate sensor is off, calorie burn calculations may not be as accurate.

• For longer workouts, you can choose to use a Bluetooth chest strap instead of the built-in heart rate sensor. To pair the Bluetooth chest strap with your watch, make sure the strap is in pairing mode, then open Settings on Apple Watch, select Bluetooth, and choose from the list of Health Devices.

• If you’re very active with your hands and your watch display turns on more than you think it should, you can prevent the display from turning on every time you raise your wrist. Open Settings on Apple Watch, select General, select Wake Screen, and turn Wake Screen on Wrist Raise off. When you want to turn on the display, just tap it or press the Digital Crown.

• Disabling Bluetooth on your iPhone increases the battery drain on your Apple Watch. For more power-efficient communication between the devices, keep Bluetooth enabled on iPhone.

More details here: Maximizing Battery Life and Lifespan

Let us know if this helps.

Best regards.

Hi fakey,

It you'd like help with your Apple Watch battery life, these steps might help. 

Have you had the chance to restart your iPhone and Apple Watch? While we know these might seem like simple steps, they often resolve issues both big and small. 

How to restart your Apple Watch

1. Press and hold the side button until you see the Power Off slider.

2. Drag the Power Off slider.

3. After your watch turns off, press and hold the side button again until you see the Apple logo.

If your Apple Watch is charging, take it off the charger first. When your watch is charging, you can't restart it. 

This information is from Restart your Apple Watch. Here's how to Restart your iPhone. How you restart your iPhone depends on the model that you have. 

If the issue continues, let the community know how many hours can you use your fully charged Apple Watch before you need to recharge it again? We know you mentioned it doesn't last past 8:00 pm, but different people start their day at a different time. You can check out the section in "See charging details in Settings" in Check your battery and charge your Apple Watch for more guidance. 

Take care!