Source: Pixel Watch battery life expected to last a day

We’ve previously reported on key Pixel Watch specs like the chip and health sensors, and can now provide some details on the battery life of Google’s first wearable device.

Google’s next device has a capacity of exactly – as we’ve learned since our initial report – just under 300mAh. According to a source, the Pixel Watch will last up to a day on a single charge. This is the estimate Google currently has at this point in the pre-release lifecycle, and could change before launch.

We couldn’t find out under what conditions – namely, whether always-on display (AOD) is enabled – the Pixel Watch was tested. Another question is whether Google has integrated sleep tracking into this issue and whether a full charge allows you to use the watch all day and then track sleep without needing to charge until you wake up.

Overall, battery life is pretty standard for Wear OS and matches what Fossil Gen 6 is touting. Samsung claims 40 hours, but our experience with the 40mm Galaxy Watch 4 and its 247mAh battery is also around a day. Only the larger 44mm Galaxy Watch 4 seems to consistently hit Samsung’s 40-hour claim. Apple, meanwhile, only touts 18 hours for the Apple Watch when counting a one-hour workout, but most users see better endurance.

Meanwhile, we learn that the Pixel Watch doesn’t offer particularly fast charging via its Magnetic to USB-C cable. It’s nowhere faster than Apple’s current offer (Series 7), which boasts 0-80% in around 45 minutes and 0-100% in 75 minutes over USB-C with a 20W adapter. Another comparison is the 300mAh Fossil Gen 6 which boasts 0-80% in “about half an hour.”

The Pixel Watch’s full charge estimates are closer and a bit longer than the 110 minutes it takes to charge the Galaxy Watch 4, which we previously considered “just not fast enough.”

These estimates for the Pixel Watch’s battery life and charging speed — if they don’t change before launch — aren’t overwhelming. This is normal for the course. Ideally, Google would have led the Wear OS market on this particular spec, as this has always been a sore spot for Android-based smartwatches. The best we can hope for is that the company has been conservative with its usage estimates and that the Pixel Watch delivers a full 24 hours or more.

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