Apple Watch Series 11 Tops Galaxy Watch 8 in 43-Hour Battery Test

Q: Is the obsession with multi-day battery life ignoring the seamless integration that most smartwatch users actually want?

Yes—often it is, at least for mainstream buyers. The evidence in this comparison suggests most people do not need week-long endurance as much as they need a watch that works smoothly with their phone, apps, messages, payments and health features. Independent tests show the Apple Watch Series 11 and Galaxy Watch 8 both generally clear the practical threshold of about 24 hours needed for all-day wear and sleep tracking. In fact, PCMag found the Apple Watch reached 43 hours, well above Apple’s claim, while CNET saw both watches around 30 hours in typical use. That matters because the real consumer problem is not always “How do I get seven days?” but “Can I get through a full day and night without anxiety?” For many users, the answer is now yes. Fast charging also reduces the pain of shorter battery life, especially on Apple’s side. The trade-off is clear. Devices with multi-day or multi-week battery life—Garmin models, fitness bands, smart rings, and some proprietary-OS watches—usually give up something in return: weaker app ecosystems, less polished messaging, fewer third-party apps, or tighter limits on calling, assistants and phone integration. They are excellent for athletes, outdoor users and people focused mainly on tracking. So battery life still matters, but beyond roughly 24 to 48 hours, integration often becomes the bigger differentiator. For most smartwatch buyers, seamless ecosystem features are not a luxury; they are the product.

1 articles · Updated · Boy Genius Report · Jul 20

43 hours of tested battery life put Apple Watch Series 11 ahead of Samsung’s Galaxy Watch 8, despite Samsung listing the longer official endurance edge.
Samsung rates the Galaxy Watch 8 at up to 30 hours versus 24 hours for Apple’s normal mode, but PCMag found the Galaxy Watch lasted 26 hours while the Apple Watch beat expectations.
CNET testing also favored Apple in practice, with both watches near 30 hours overall and the Apple Watch ranging from 27 to 32 hours.
Weeks-long alternatives from Garmin, fitness bands and premium Ultra models still outlast both devices, leaving ecosystem compatibility—not battery life alone—as the main reason to choose Apple or Samsung.