{"id":3602,"date":"2026-01-10T15:39:00","date_gmt":"2026-01-10T15:39:00","guid":{"rendered":"https:\/\/www.batteriesfast.co.uk\/blogs\/?p=3602"},"modified":"2026-01-10T09:54:00","modified_gmt":"2026-01-10T09:54:00","slug":"apple-watch-ultra-2-battery-life","status":"publish","type":"post","link":"https:\/\/www.batteriesfast.co.uk\/blogs\/archives\/3602","title":{"rendered":"Apple Watch Ultra 2 battery life"},"content":{"rendered":"\n

Apple doesn\u2019t reveal the Apple  Watch battery<\/a><\/u> <\/strong>capacity of its Apple Watches when it releases new hardware, preferring to discuss Apple Watch Ultra 2 battery<\/a><\/u><\/strong> life in terms of days and hours of use. But information about the upcoming Apple Watch Series 9 and Apple Watch Ultra 2 has been hiding in Chinese regulatory databases, according to MacRumors.<\/p>\n\n\n\n

The site reports that the capacity of the Apple Watch Series 9 has not changed, remaining at 282mAh and 308mAh for the 41mm and 45mm models, respectively. Despite this, the Apple Watch Ultra 2 battery<\/a> <\/strong>is still rated at 18 hours of battery life, presumably because the 25% efficiency savings promised by the new S9 chipset have been absorbed by the brighter screen, which can now reach 2,000 nits. The Apple Watch Ultra 2, meanwhile, is slightly larger \u2014 though the difference isn\u2019t huge. The site claims that the Apple Watch Ultra 2 battery<\/a> <\/strong>has a capacity of 564mAh \u2014 up from the 542mAh (or about 4%) of the Apple Watch Ultra 1 battery. Apple again says the Ultra 2 will still last 36 hours under normal use (the efficiency of the S9 chipset helps the screen reach a brighter 3,000 nits), but here\u2019s where things get a little confusing.<\/p>\n\n\n\n

The company also says the Watch Ultra 2 will last up to 72 hours in low-power mode, up from 60 hours on the original. That sounds like the S9 chip might be offering some clever tricks to save more power in power-saving mode, but maybe not. As MacRumors spotted, the fine print on each phone suggests the numbers were arrived at via different methods. The 60-hour figure was derived from 15 hours of hiking, \u201cover 600\u201d time checks, 35 minutes of app use, three minutes of calls, and 15 hours of sleep tracking. The 72-hour total came from 360 time checks, 180 minutes of app use, and a two-hour music workout over Bluetooth.<\/p>\n\n\n\n

“Find the best Apple Smart Watch Battery price! Search Batteriesfast.co.uk for Apple Smart Watch Battery.<\/a><\/u><\/strong> Get fast shipping and top-rated customer service<\/p>\n\n\n\n

\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e\uff1e3.86V 542mAh Replacement Smart Watch Battery for Apple A2749<\/a><\/u><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Apple doesn\u2019t reveal the Apple  Watch battery capacity of its Apple Watches when it releases new hardware, preferring to discuss Apple Watch Ultra 2 battery life in terms of days and hours of use. But information about the upcoming Apple Watch Series 9 and Apple Watch Ultra 2 has been hiding in Chinese regulatory databases, according to MacRumors. The site reports that […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[204],"tags":[],"class_list":["post-3602","post","type-post","status-publish","format-standard","hentry","category-smartwatch-battery-2"],"yoast_head":"\nApple Watch Ultra 2 battery life - Batteries Fast Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.batteriesfast.co.uk\/blogs\/archives\/3602\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Apple Watch Ultra 2 battery life - Batteries Fast Blog\" \/>\n<meta property=\"og:description\" content=\"Apple doesn\u2019t reveal the Apple  Watch battery capacity of its Apple Watches when it releases new hardware, preferring to discuss Apple Watch Ultra 2 battery life in terms of days and hours of use. 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