Photo hints at bigger, 334mAh battery in second-gen Apple Watch
A photo uploaded on Sunday purportedly shows a 334 milliamp-hour battery destined for the second-generation Apple Watch, which would represent a small but significant improvement over the first-generation model.

The battery is specifically for a new 42-millimeter Watch, according to a post on China's Weibo. Current 42-millimeter models have a 246 milliamp-hour battery, which is typically enough to last a day as long as users don't engage in extended workouts or phone calls.
Although the authenticity of the leaked part can't be confirmed, the "Apple Watch 2" has sometimes been rumored as getting a battery upgrade, solving one of the biggest user complaints. Competing smartwatches often need to be recharged every day or two as well -- but some can last several days or more, such as ones from Garmin and Pebble.
The new product is expected to launch later this year, and could be announced as soon as Apple's Sept. 7 iPhone event, though an October reveal is also a possibility. Frequently accurate KGI Securities analyst Ming-Chi Kuo has suggested that Apple will offer two different models, the higher-end one including extras like GPS and a barometer. In fact, a bigger battery might be needed in that device just to keep longevity the same, given how draining GPS tracking can be.
Both new units will allegedly have new processors, as well as better waterproofing. At the moment, Apple recommends against taking Watches swimming or into the shower.

The battery is specifically for a new 42-millimeter Watch, according to a post on China's Weibo. Current 42-millimeter models have a 246 milliamp-hour battery, which is typically enough to last a day as long as users don't engage in extended workouts or phone calls.
Although the authenticity of the leaked part can't be confirmed, the "Apple Watch 2" has sometimes been rumored as getting a battery upgrade, solving one of the biggest user complaints. Competing smartwatches often need to be recharged every day or two as well -- but some can last several days or more, such as ones from Garmin and Pebble.
The new product is expected to launch later this year, and could be announced as soon as Apple's Sept. 7 iPhone event, though an October reveal is also a possibility. Frequently accurate KGI Securities analyst Ming-Chi Kuo has suggested that Apple will offer two different models, the higher-end one including extras like GPS and a barometer. In fact, a bigger battery might be needed in that device just to keep longevity the same, given how draining GPS tracking can be.
Both new units will allegedly have new processors, as well as better waterproofing. At the moment, Apple recommends against taking Watches swimming or into the shower.
Comments
Well when 90% of your statements are obvious, of course you're going to be "frequently accurate".
How long the battery lasts is as dependent on features and how much they consume, so the whole thing is utterly void of information.
42mm Apple Watch Sport owner here.
Normal daily use, including multiple workouts, navigation, consuming all incoming notifications, Apple Pay, voice-to-text replying, Digital Touch, but zero use of 3rd party apps because load times are infuriating.
By bedtime, midnight or after, my Apple Watch is still left with 20-40% battery life.
Battery life has NEVER been an issue for my use case. My iPhone 6s on the other hand...
I'd like a higher capacity battery, but hopefully due to denser power storage over simply increasing the battery's size.
Wouldnt we all love denser power storage lol
"...the first of these batteries are expected in drones right away, in November 2016. Wearables, cell phones, and other small consumer electronics should start getting these types of batteries by 2017 if all goes well."
http://www.androidpolice.com/2016/08/19/researchers-developed-lithium-batteries-twice-capacity-expect-ready-smartphones-2017/
(edited with better link)
if you're charging your phone each nite as you sleep, there's no incurred hardship to charge you watch right next to it. none.
My other half used low power mode on hers when we went away into the wilderness for a long weekend and it stayed on for over 4 days (she didn't turn it off at night).
It might be good if Apple offered multiple power modes, but I guess they don't want to water-down the experience.
I'm more looking forward to WatchOS3 for the speed increase in all honesty.