But does following the 80 percent rule, actually make a difference? One woman tried it for a whole year with her iPhone 16 Pro Max to find out.<\/p>\n
DISCOVER SBX CARS<\/a> \u2013 The global premium auction platform powered by Supercar Blondie\u00a0\u00a0<\/p>\n She didn\u2019t let her iPhone charge past 80% for a whole year <\/p>\n As phone\u2019s age the battery degrades, meaning there\u2019s less time between charges.\u00a0<\/p>\n There are plenty of hints and hacks<\/a> that claim to boost your phone\u2019s battery, like not swiping apps<\/a> closed or placing your device face down<\/a> when not in use.\u00a0<\/p>\n Another touted method to improve your battery life is to limit charging to just 80 percent and one woman put it to the test for an entire year.\u00a0<\/p>\n In a post<\/a> shared on the Mac Rumors forum she revealed that she had done a similar test the year before with her iPhone 15, and decided to give it another go with her newer handset.\u00a0<\/p>\n As well as only charging up to a maximum of 80 percent, she also tried to avoid letting it fall below 20 percent before charging.\u00a0<\/p>\n And admitted that it hadn\u2019t always been easy, and that keeping in with the strict limits had been \u2018inconvenient\u2019 .\u00a0<\/p>\n It was fine when home, but if I was out and wanted to use the camera or needed GPS, it often wasn\u2019t enough battery,\u201d she revealed.\u00a0<\/p>\n To charge her iPhone 16 she used a \u201850\/50 split\u2019 of MagSafe wireless charging and fast-charging via USB-C.<\/p>\n Click the star icon next to supercarblondie.com inGoogle Search<\/a> to stay ahead of the curve on the latest and greatest supercars, hypercars, and ground-breaking technology<\/p>\n Here\u2019s what the results showed after 12 months <\/p>\n The woman ran her year-long experiment from September 2024 to September 2025 and then posted her findings on Mac Rumors.\u00a0<\/p>\n In the post she revealed that after a year of charging to no more than 80 percent, her battery was at a not-too-shabby 94 percent capacity after 299 charge cycles.\u00a0<\/p>\n However, she went on to say that she believed the battery capacity to be \u2018about average\u2019 regardless of charging habits.\u00a0<\/p>\n \u201cMy coworker, who also has a 16 Pro Max, did not have an 80 percent charge limit set, and his battery capacity is 96 percent with 308 charge cycles,\u201d she said.\u00a0<\/p>\n The woman added that over she didn\u2019t think it was worth it, and that her results had been \u2018disappointing\u2019. <\/p>\n But just to test the theory, she had begun another year-long experiment, this time with an iPhone 17 Pro Max<\/a>.\u00a0<\/p>\n And I guess we\u2019ll find out how that went in about six months time.\u00a0<\/p>\n Timeline of the iPhones<\/p>\n 2007: First generation is announced by Steve Jobs<\/p>\n 2008: iPhone 3G is launched with 3G connectivity and the App store<\/p>\n 2010: iPhone debuts with Retina Display and new glass\/steel design<\/p>\n 2011: Siri is introduced<\/p>\n 2013: Touch ID is introduced with the 5S<\/p>\n 2016: The headphone jack is removed with the 7 and 7 Plus<\/p>\n 2017: Face ID is introduced<\/p>\n 2020: iPhone 12 series introduces 5G<\/p>\n 2024: The 16 series introduces enhanced on-device AI features and camera controls<\/p>\n 2025: iPhone 17 is introduced with a redesigned ultra-thin form factor, next-generation AI capabilities, and a more advanced camera system<\/p>\n![\"A](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/02\/iphone-9-1024x640.webp.webp\")
<\/a>Amanz <\/p>\n![\"A](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/02\/iphone-2-3-1024x640.webp.webp\")
<\/a>Rohit Sharma<\/p>\n