Apple Watch battery

Apple Watch Ultra 4 Battery Information

Apple Watch Ultra 4 was designed for endurance athletes, outdoor adventurers and water sports enthusiasts who need longer battery life to train, compete and explore. With a full charge, it can last over 2 days without needing to charge factoring in activities like doing two 60-minute workouts, using apps, receiving notifications and checking the time. Total time includes up to 38 hours of daily use and 12 hours of sleep tracking.

Apple Watch Ultra 4 battery life testing was conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4 paired with an iPhone; all devices were tested with prerelease software. Battery life varies by use, mobile coverage, configuration and many other factors; actual results will vary.

Multi-Day Battery Life

Over 2 days (up to 50 hours)

Over 3 days (up to 84 hours) in Low Power Mode

Multi-day battery life testing includes: 630 time checks, 190 notifications, 30 minutes of app use, two 60-minute workouts with music playback from Apple Watch via Bluetooth®, and 12 hours of sleep tracking over the course of 50 hours; Apple Watch Ultra 4 usage includes a total of 10 hours of mobile network connection and 40 hours of connection to iPhone via Bluetooth over the course of 50 hours. Battery life testing in Low Power Mode includes: 1,100 time checks, 330 notifications, 55 minutes of app use, two 60-minute workouts with music playback from Apple Watch via Bluetooth, and 18 hours of sleep tracking over the course of 84 hours; Apple Watch Ultra 4 usage includes on-demand mobile network connection and 68 hours of connection to iPhone via Bluetooth over the course of 84 hours. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4 paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Workout

Up to 18 hours workout tracking

Up to 25 hours Extended Workout tracking

Up to 45 hours Max Extended Workout tracking

Workout tested without iPhone and with heart rate sensor on during outdoor run workout sessions. Extended Workout turns on Low Power Mode during the workout; running form metrics will be unavailable. Max Extended Workout turns on Low Power Mode during the workout and turns off alerts and splits; certain metrics will be unavailable. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4; all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Charge

About 45 minutes to 80%

About 75 minutes to 100%

Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charger to USB‑C Cable. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4 paired with an iPhone; all devices tested with prerelease software, preproduction Apple Watch Magnetic Fast Charger to USB‑C Cable (Model A3277) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charge for 15 minutes

15 minutes of charging for up to 18 additional hours of battery life

Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4 paired with an iPhone; all devices tested with prerelease software, preproduction Apple Watch Magnetic Fast Charger to USB‑C Cable (Model A3277) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charge for Sleep Tracking

5 minutes of charging for up to 10 hours of Sleep Tracking

Apple Watch Series 12 Battery Information

Apple Watch Series 12 is the ultimate device for a healthy life. It can last up to 24 hours without needing to charge, including 18 hours of normal daily use and 6 hours of sleep tracking. An 18-hour day factors in activities like doing a 60-minute workout, using apps, receiving notifications and checking the time.

Apple Watch All-Day Battery Life testing was conducted by Apple in July and August 2026 using preproduction Apple Watch Series 12 (GPS) and Apple Watch Series 12 (GPS + Cellular), each paired with an iPhone; all devices were tested with prerelease software. Battery life varies by use, mobile coverage, configuration and many other factors; actual results will vary.

All-Day Battery Life

Up to 24 hours

Up to 38 hours in Low Power Mode

All-day battery life testing includes: 300 time checks, 90 notifications, 15 minutes of app use, a 60-minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 24 hours; Apple Watch Series 12 (GPS) usage includes connection to iPhone via Bluetooth during the entire 24-hour test; Apple Watch Series 12 (GPS + Cellular) usage includes a total of 4 hours of mobile network connection and 20 hours of connection to iPhone via Bluetooth over the course of 24 hours. Battery life testing in Low Power Mode includes: 530 time checks, 160 notifications, 26 minutes of app use, a 60-minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 38 hours; Apple Watch Series 12 (GPS) usage includes connection to iPhone via Bluetooth during the entire 38-hour test; Apple Watch Series 12 (GPS + Cellular) usage includes on-demand mobile network connection and 30 hours of connection to iPhone via Bluetooth over the course of 38 hours. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Series 12 (GPS) and Apple Watch Series 12 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Workout

Up to 10 hours workout tracking

Workout tested without iPhone and with heart rate sensor on during outdoor run workout sessions. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Series 12 (GPS) and Apple Watch Series 12 (GPS + Cellular); all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Charge

About 30 minutes to 80%

About 1 hour to 100%

Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charger to USB-C Cable. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Series 12 (GPS) and Apple Watch Series 12 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, preproduction Apple Watch Magnetic Fast Charger to USB-C Cable (Model A3277) and Apple 20W USB-C Power Adapter (Model A2305). Fast-charge testing conducted with drained Apple Watch units. Times measured from the appearance of the Apple logo as the unit started up. Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charge for 15 minutes

15 minutes of charging for up to 12 additional hours of battery life

Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Series 12 (GPS) and Apple Watch Series 12 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, preproduction Apple Watch Magnetic Fast Charger to USB-C Cable (Model A3277) and Apple 20W USB-C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charge for Sleep Tracking

5 minutes of charging for up to 10 hours of Sleep Tracking

Apple Watch SE 3 Battery Information

Apple Watch SE 3 has all-day 18-hour battery life. Starting with a fully charged battery in the morning, it can last up to 18 hours, factoring in activities like doing a 60-minute workout, using apps, receiving notifications and checking the time. And because everyone will use Apple Watch differently, we tested several other metrics as well.

Apple Watch All-Day Battery Life testing was conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices were tested with prerelease software. Battery life varies by use, mobile coverage, configuration and many other factors; actual results will vary.

All-Day Battery Life

Up to 18 hours

Up to 32 hours in Low Power Mode

All-day battery life is based on the following use: 300 time checks, 90 notifications, 15 minutes of app use, and a 60-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours; Apple Watch SE 3 (GPS) usage includes connection to iPhone via Bluetooth during the entire 18-hour test; Apple Watch SE 3 (GPS + Cellular) usage includes a total of 4 hours of mobile network connection and 14 hours of connection to iPhone via Bluetooth over the course of 18 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 430 time checks, 130 notifications, 20 minutes of app use, a 60-minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 32 hours; Apple Watch SE 3 (GPS) usage includes connection to iPhone via Bluetooth during the entire 32-hour test; Apple Watch SE 3 (GPS + Cellular) usage includes on-demand mobile network connection and 24 hours of connection to iPhone via Bluetooth over the course of 32 hours. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Audio Playback

Up to 10 hours playback from Apple Watch storage

Tested with music playback from Apple Watch storage via Bluetooth. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular); all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Workout

Up to 7 hours workout tracking

Workout tested without iPhone and with heart rate sensor on during outdoor run workout sessions. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular); all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

Charge

About 45 minutes to 80%

About 75 minutes to 100%

Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charger to USB-C Cable. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB-C Cable (Model A2515) and Apple 20W USB-C Power Adapter (Model A2305). Fast-charge testing conducted with drained Apple Watch units. Times measured from the appearance of the Apple logo as the unit started up. Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charges up to 2x faster

Apple Watch SE 3 charges up to 2x faster than Apple Watch SE 2

Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS + Cellular) and Apple Watch SE 2 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB-C Cable (Model A2515) and Apple 20W USB-C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charge for 15 minutes

15 minutes of charging for up to 8 hours of battery life

Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB‑C Cable (Model A2515) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

Charge for Sleep Tracking

8 minutes of charging for up to 8 hours of Sleep Tracking