Why does my watch die so fast I just bought it and it last one day that’s it ?

Hello Jaimejoylibby,

I also noticed my Apple Watch dying a bit faster than I would have liked it to after first purchasing. Some of the default settings designed for the best user experience can lead to this. After updating some of the settings my watch lasted a few days before needing to be recharged.

This page has some tips for increasing battery performance. Batteries - Maximizing Performance - Apple. The third bullet point from the Apple Watch section (pasted below) was what I feel made the best improvement for me.

“Adjust your settings.

There are a few ways you can preserve battery life on your Apple Watch:

• 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."

I hope this helps.

Apple says with average use a watch should last 18 hours between charges.