Smartwatch battery life: what the numbers really mean
Short answer: Battery claims come from the maker's own test, usually with light use. Real life is shorter when you use GPS, an always-on display or a cellular connection. Compare the same kind of figure across models, and look for a separate saver or low-power number.
Last verified September 26, 2026.
Why claims differ from your day
- Typical use assumes some notifications and a few workouts.
- Light use assumes little screen time and no GPS.
- Saver mode limits features to stretch the charge.
- User-measured figures come from independent use, not the maker.
What drains the battery
- GPS and workout tracking, especially dual-band
- An always-on display and high brightness
- Cellular connection or streaming
- Frequent notifications and background sync
How to compare
Match like with like: typical to typical, saver to saver. When a model lists both, the gap shows how much the saver mode costs you in features. Long battery is useful, but not if you must turn off the features you bought it for.
Battery figures in our catalog
Show the battery text for all 245 models
| Model | Battery, as listed |
|---|---|
| Garmin Enduro 3 | Up to 90 days (solar) · 320 GPS hours |
| Suunto Vertical | Up to 60 days (solar) |
| COROS Vertix 2S | ~40 days · 118 GPS hours |
| Withings ScanWatch Nova | Up to 35 days |
| Garmin Fenix 9 Pro | Up to 31 days · 57 days (solar) |
| Amazfit T-Rex Ultra 2 | Up to 30 days · 50+ GPS hours |
| COROS Apex 4 | Up to 65 GPS hours (46 mm) |
| Withings ScanWatch 2 | Up to 30 days |
| Withings ScanWatch Light | Up to 30 days |
| Garmin Fenix 9 | Up to 29 days (51 mm) |
| Garmin tactix 8 Cerakote Edition | Up to 29 days |
| Garmin Fenix 8 Pro AMOLED | Up to 27 days (51 mm) |
| Amazfit T-Rex 3 Pro | ~25 days |
| Garmin D2 Mach 2 Pro | Up to 24 days |
| Redmi Watch 5 | Up to 24 days |
| COROS NOMAD | Up to 22 days; 50 hours All-Systems GPS |
| Amazfit Balance 2 | Up to 21 days |
| Xiaomi Smart Band 10 | Up to 21 days |
| Xiaomi Smart Band 10 Pro | Up to 21 days |
| Xiaomi Smart Band 9 Pro | Up to 21 days |
| Amazfit Verge Lite | ~20 days |
| COROS PACE Pro | Up to 20 days · 38 GPS hours |
| Mibro GS Explorer | Up to 20 days |
| Realme Watch S2 | Up to 20 days |
| COROS Pace 4 | 19 days · 41 GPS hours |
| Garmin Instinct 3 | Up to 18 days (AMOLED) · unlimited (solar MIP) |
| Redmi Watch 4 | Up to 18 days |
| Redmi Watch 5 Active | Up to 18 days |
| Redmi Watch 5 Lite | Up to 18 days |
| Amazfit Active Edge | Up to 16 days |
| Garmin Instinct E 45mm | Up to 16 days · 24 GPS hours |
| Moto Watch Fit | Up to 16 days |
| Suunto Race 2 | ~16 days · up to 55 GPS hours |
| COROS PACE 3 | About 15 days of regular use · 38 GPS hours |
| Garmin Forerunner 970 | Up to 15 days |
| Garmin quatix 8 Pro | Up to 15 days |
| Kospet Tank M3 | ~15 days |
| Kospet Tank M3 Ultra | Up to 15 days |
| Kospet Tank M4C | ~15 days |
| Kospet Tank T4 | Up to 15 days |
| Kospet Tank T4C | ~15 days |
| Xiaomi Watch S4 | Up to 15 days |
| ASUS VivoWatch 5 | ~14 days |
| Amazfit Active | Up to 14 days |
| Amazfit Balance | Up to 14 days |
| Amazfit Bip 3 Pro | Up to 14 days |
| Amazfit Bip 6 | Up to 14 days |
| Amazfit GTR 2 | Up to 14 days |
| Amazfit GTS (1st gen) | ~14 days |
| Amazfit GTS 2e | Up to 14 days |
| Honor Band 7 | Up to 14 days |
| Honor Band 9 | Up to 14 days |
| Honor Watch 4 | Up to 14 days |
| Honor Watch 6 | ~14 days |
| Huawei Band 10 | Up to 14 days |
| Huawei Band 11 | Up to 14 days |
| Huawei Band 8 | Up to 14 days |
| Huawei Watch GT 4 | Up to 14 days (46) · 7 (41) |
| Huawei Watch GT 5 | Up to 14 days (46) · 7 (41) |
| Huawei Watch GT 5 Pro | Up to 14 days (46) · 7 (42) |
| Huawei Watch Ultimate | Up to 14 days |
| Kospet Magic P10 | ~14 days |
| Kospet Magic R10 | ~14 days |
| Maxcom FW65 Iron | 400mAh · up to 14 days |
| Maxcom FW67 Titan Pro | 380mAh · up to 14 days |
| Mibro GS Active | ~14 days |
| Mibro GS Pro | ~14 days |
| POCO Watch | Up to 14 days |
| Realme Watch 5 | ~14 days (460mAh)~ |
| Ulefone Armor Watch Pro | ~14 days |
| Vivo Watch GT 2 | ~14-21 days |
| Xiaomi Smart Band 8 Pro | Up to 14 days |
| ZTE Watch Live 3 | ~14 days |
| CMF Watch 3 Pro | Up to 13 days |
| Garmin Forerunner 70 | Up to 13 days |
| Samsung Galaxy Fit3 | Up to 13 days |
| Suunto Race S | Up to 13 days · up to 30 hours of best GPS (120 hours in saver mode) |
| Amazfit Active 3 Premium | ~12 days |
| Garmin Venu 4 | Up to 12 days |
| Honor Choice Watch 2 Epic | ~12 days |
| Honor Choice Watch 2 Pro | ~12 days |
| Honor Choice Watch 2i | ~12 days |
| Huawei Watch GT 6 | Up to 12 days · 21 light-use (46mm) |
| Huawei Watch GT 7 | Up to 12 days · 21 light-use |
| Huawei Watch GT 7 Pro | Up to 12 days · 21 light-use |
| Kospet Tank S2 | ~12 days |
| Kospet Tank T2 Special Edition | ~12 days |
| Kospet Tank T3 Ultra | ~12 days |
| Kospet Tank T3 Ultra 2 | 470mAh · ~12 days · 30-35 GPS hours |
| Kospet Tank X2 Ultra | ~12 days |
| Maimo Saphir Watch (WT1004) | ~12 days |
| Maimo Watch R (70mai) | ~12 days |
| Maxcom FW110 Titan Chronos | ~12 days |
| Maxcom FW66 Iron R | ~12 days |
| Mibro Watch Lite 3 Pro | ~12 days |
| Polar Vantage V3 | ~12 days · 53 GPS hours |
| Realme Band 2 | ~12 days |
| Xiaomi Watch S1 | Up to 12 days |
| Xiaomi Watch S1 Active | Up to 12 days |
| Xiaomi Watch S5 | ~12 days (user-measured) |
| Amazfit Bip 5 Unity | Up to 11 days |
| CMF Watch Pro 2 | Up to 11 days |
| Garmin Forerunner 165 | Up to 11 days · 19 GPS hours |
| Garmin Vivoactive 6 | Up to 11 days |
| Amazfit Active 2 (round) | Up to 10 days |
| Amazfit Bip 5 | Up to 10 days |
| Blackview W10 Pro | ~10 days |
| Blackview W60 | ~10 days |
| Fitbit Inspire 3 | Up to 10 days |
| Garmin Fenix 8 Pro MicroLED | Up to 10 days |
| Garmin Forerunner 170 | Up to 10 days |
| Garmin Forerunner 570 | Up to 10 days (47 mm) |
| Huawei Watch Fit 4 Pro | Up to 10 days |
| Kospet ORB | ~10 days |
| Kospet Pulse | ~10 days |
| Maimo Watch (WT2001) | ~10 days |
| Maxcom FW100 Titan Valkyria | ~10 days |
| Maxcom FW58 Vanad Pro | ~10 days |
| Maxcom FW76 Gal | 250mAh · up to 10 days |
| Mibro Watch A3 | ~10 days |
| Mibro Watch Fit | ~10 days |
| Mibro Watch GS | ~10 days |
| Mibro Watch GT | ~10 days |
| Mibro Watch Lite 2 | ~10 days |
| Mibro Watch Lite 3 | ~10 days |
| Mibro Watch T2 | ~10 days |
| Mibro Watch X1 | ~10 days |
| Moto Watch 47 | ~10 days |
| OnePlus Watch Lite | Up to 10 days |
| Polar Grit X2 Pro | ~10 days · 43 GPS hours |
| Polar Street X | Up to 10 days · 43 GPS hours |
| Suunto Run 2 | Up to 10 days |
| ASUS VivoWatch 6 | ~9-14 days |
| Garmin Lily 2 Active | Up to 9 days |
| Huawei Watch Fit SE | ~9 days |
| Realme Watch (1st gen) | ~9 days |
| Amazfit GTS 4 | Up to 8 days |
| Maxcom FW73 Onyx | ~8 days |
| Mibro Watch C3 | ~8 days |
| Mibro Watch Lite | ~8 days |
| Mibro Watch T1 | ~8 days |
| Polar Loop | Up to 8 days |
| Ulefone Armor Watch Ultra | ~8 days |
| ASUS VivoWatch 5 Aero | ~7 days |
| Amazfit GTS 2 | ~7 days |
| Denver SW-500 | ~7 days |
| Denver SWC-185 | ~7 days |
| Denver SWC-187 | 280mAh · ~5-7 days |
| Denver SWC-195 | ~7 days |
| Denver SWC-342 | ~7 days |
| Denver SWC-387 | ~7 days |
| Denver SWGL-149 | ~7 days |
| Fitbit Charge 5 | Up to 7 days |
| Fitbit Charge 6 | Up to 7 days |
| Garmin Vivosmart 5 | Up to 7 days |
| Google Fitbit Air | Up to a week |
| Huawei Watch Fit 3 | Up to 7 days · 10 light-use |
| Huawei Watch Fit 4 | Up to 7 days · 10 light-use |
| Huawei Watch Fit 5 | Up to 7 days · 10 light-use |
| Imilab W01 | ~7 days |
| Lenovo Watch S2 Pro | ~7 days |
| Maxcom FW26 Oxygen Pro | ~7 days |
| Maxcom FW27 Selen | ~7 days |
| Maxcom FW28 Selen Mini | ~7 days |
| Maxcom FW42 | ~7 days |
| Maxcom FW55 Smart Band | ~7 days |
| Maxcom FW74 Aurum Slim | 200mAh · up to 7 days |
| Media-Tech Activeband Genua | ~7 days |
| Mibro Watch A1 | ~7 days |
| Polar Vantage M3 | Up to 7 days · 30 workout hours |
| Realme Watch R100 | ~7 days |
| SPC Smartee Duo 3 | ~7 days |
| SPC Smartee Duo Velvet | ~7 days |
| SPC Smartee Duo Vivo 2 | ~7 days |
| Tracer GP-Fit2 | ~7 days |
| Tracer GP-Run | ~7 days |
| Fitbit Sense 2 | 6+ days |
| Fitbit Versa 3 | 6+ days |
| Fitbit Versa 4 | Up to 6 days |
| Huawei Watch D3 | ~6 days |
| Denver SW-162 | ~5 days |
| Mibro Kids P6 | ~5 days (900mAh) |
| OPPO Watch X3 | Up to 5 days · up to 16 days in power saver mode |
| OnePlus Watch 3 | Up to 5 days · up to 16 days in power saver mode |
| OnePlus Watch 4 | Up to 5 days · up to 16 days in power saver mode |
| Tracer SM7 Astral/Shadow | ~5-7 days |
| Tracer SMR11 Hero | ~5-7 days |
| Tracer SMW9 X-TRO | ~5-7 days |
| Tracer SMW9A Spark | ~5-7 days |
| Huawei Watch 6 | Up to 4.5 days · up to 11 days in battery saver mode |
| Huawei Watch 6 Pro | Up to 4.5 days · up to 11 days in battery saver mode |
| Galaxy Watch Ultra2 | 800mAh · up to 4 days |
| Mibro Kids S1 | ~3-5 days |
| Xiaomi Smart Kids Watch | ~4 days (900mAh) |
| TicWatch Atlas | Up to 90 hours (saver display) |
| Galaxy Watch 5 Pro | ~80 hours (590mAh) |
| Huawei Watch 5 | Up to 3 days (42) · 4.5 (46) |
| Maxcom FW49 Kiddo 2 | ~2-3 days |
| Mibro Kids Watch P5 | ~2-3 days |
| Mibro Kids Watch Z3 | ~2-3 days |
| Mibro Kids Watch Z5 | ~2-3 days |
| Apple Watch Ultra 4 | Up to 50 hours · 84 hours saver |
| Apple Watch Ultra 2 | Up to 36 hours (72 hours in low power mode) |
| Blackview Z10 4G Kids | 680mAh · ~1-2 days |
| Blackview Z20 4G GPS Kids | 800mAh · ~1-2 days |
| Blackview Z40 Pro | ~1-2 days |
| Galaxy Watch 3 | ~2 days (247/340mAh) |
| Galaxy Watch Ultra (2024) | 590 mAh, up to 60 hrs (AOD on) / 100 hrs (Power Saving) |
| Galaxy Watch Ultra (2025) | 590 mAh, up to 60 hrs (AOD on) / 100 hrs (Power Saving) |
| Garett Kids Vibe 4G | ~1-2 days |
| Garmin Bounce 2 | Up to 2 days |
| KidiWatch Connect 5.0 4G | 700mAh |
| KidiWatch PROTECT 4G | 680mAh |
| SPC Smartee 4G Junior | ~1-2 days |
| SPC Smartee 4G Kids | ~1-2 days |
| SPC Smartee 4G Senior | ~1-2 days |
| SaveFamily Iconic 4G | ~1-2 days |
| TCL Movetime MT48 Kids | ~1-2 days |
| TickTalk 6 | ~2 days |
| Watch-Me Grace | Up to 48 hours |
| Xiaomi Watch 2 | Up to 65 hours |
| Xiaomi Watch 2 Pro | ~55 hours (BT) · ~45 (LTE) |
| Xplora X6 Play | ~2 days |
| ZTE Watch Kids 2 | ~1-2 days |
| imoo Watch Phone Z7 | ~2 days |
| Apple Watch Ultra 3 | Up to 42 hours · 72 hours saver |
| Spacetalk Adventurer 2 | Up to 36 hours |
| Galaxy Watch 8 Classic | Up to ~34 hours (AOD) |
| Galaxy Watch 9 | Up to 30 hours (AOD) |
| Pixel Watch 5 | 30 hours (41) · 40 hours (45) |
| Galaxy Watch 8 | Up to ~29 hours (AOD) |
| Pixel Watch 4 | Up to 30 hours (41) · 40 hours (45) |
| Anio 6 | 24 to 48 hours |
| Apple Watch SE (2nd gen) | Up to 18 hours |
| Apple Watch Series 10 | Up to 18 hours (36 hours in low power mode) |
| Apple Watch Series 11 | Up to 24 hours |
| Apple Watch Series 12 | Up to 24 hours (10 workout hours) |
| Apple Watch Series 9 | Up to 18 hours (36 hours in low power mode) |
| Fitbit Ace LTE | ~16 hours |
| Galaxy Watch 5 | ~40 hours (284/410mAh) |
| Galaxy Watch 6 | ~40 hours (300/425mAh) |
| Galaxy Watch 6 Classic | ~40 hours (300/425mAh) |
| Galaxy Watch 7 | ~40 hours (300/425mAh) |
| Pixel Watch (1st gen) | Up to 24 hours |
| Apple Watch SE 3 | Up to 18 hours |
65 models are not listed here because no battery figure is published or the text is not available in this language.
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Battery life varies with use and software updates. Some buy links may earn WristGuide a commission at no extra cost to you. See our methodology and affiliate disclosure.