Best Battery Life Phones: Which Actually Last 20+ Hours

Battery life remains one of the top priorities for smartphone users in 2025. Manufacturers are equipping devices with larger batteries and more efficient chips, resulting in phones that can easily last a full day (or more) on a single charge. Below, we break down the flagship, gaming, budget, and even refurbished phones that offer exceptional battery performance, with up-to-date specs and real-world test results to back them up.

Flagship Phones with Exceptional Battery Life

The latest flagship phones combine high-capacity batteries with efficient processors for all-day endurance.

Apple iPhone 16 Pro Max (4,685 mAh)

Apple's 2024 flagship delivers the best battery life ever seen in an iPhone. In lab tests, it achieved approximately 17 hours and 35 minutes of continuous web browsing, 10+ hours of video streaming, and strong gaming endurance on a charge.

This endurance comes from its larger battery and the ultra-efficient A18 Pro chip, allowing the iPhone 16 Pro Max to outlast even its predecessors. Its MagSafe wireless charging adds convenience for those looking for a battery that lasts all day on phones.

Apple iPhone 15 Pro Max (4,441 mAh)

TheiPhone 15 Pro Max sets a new standard for battery life in Apple's lineup. Boasting a larger battery capacity than its predecessor, with the introduction of the A17 Bionic chip, the iPhone 15 Pro Max achieves unparalleled efficiency, enhancing its battery life.

The iPhone 15 Pro Max also supports the latest MagSafe wireless charging, offering a convenient and fast way to recharge your device.

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Samsung Galaxy S25 Ultra (5,000 mAh)

Samsung's latest flagship combines a robust 5,000mAh battery with the latest Snapdragon processor to deliver outstanding endurance across multiple usage scenarios. The S25 Ultra represents Samsung's latest innovation in battery optimization, ensuring extended hours of video playback and all-day usage.

Available now at Phonebot with exclusive pricing, the S25 Ultra features an advanced camera system and superior battery management, setting new benchmarks for mobile performance. This is the newest flagship you should consider if you want Samsung's cutting-edge battery and processing technology.

Google Pixel 9 Pro (5,100 mAh)

The Google Pixel 9 Pro is built for efficiency, featuring a 5,100mAh battery that delivers exceptional longevity, even under heavy workloads. Powered by the Google Tensor G4 chipset, it optimizes battery consumption based on usage patterns, significantly extending screen-on time with an average active use score of 13+ hours. 30W wired and 23W wireless charging ensure you're powered up quickly, making it an excellent Android phone for professionals and content creators who need reliable all-day battery life.

How We Test Battery Life

The battery test results referenced throughout this guide come from leading independent testing labs that use standardized methodologies. Most tests involve surfing the web over 5G at consistent screen brightness (typically 150 nits) until the device fully drains. Real-world battery life will vary depending on your usage patterns, screen brightness settings, network connectivity, and app activity.

The figures provided represent best-case all-day usage scenarios and serve as reliable comparisons across devices. We source data from Tom's Guide, GSMArena, and PhoneArena to ensure accuracy.

Gaming Phones with Marathon Battery Life

Gaming-oriented phones often include massive batteries and aggressive cooling to sustain long play sessions without frequent charging.

Asus Zenfone 8 Flip 5G (5,000 mAh)

Asus Zenfone 8 Flip flagship delivers impressive endurance with its 5,000mAh battery. While slightly smaller than gaming phones, it's designed for power users, content creators, and mobile enthusiasts who need a device that lasts all day. The Snapdragon 888 5G chipset ensures fast performance, while WiFi 6E offers stable connectivity. The Flip Camera technology provides high-quality front and rear shots, making it a top choice for photography lovers.

Asus ROG 6D Gaming Phone (6,000 mAh)

With its monstrous 6,000mAh battery, the Asus ROG 6D gaming phone leads the pack when it comes to battery capacity and real-world endurance. This gaming powerhouse is engineered to power through hours of intensive gaming and multitasking without compromise.

TheAsus ROG 6D boasts aggressive thermal management, keeping the device cool even during marathon gaming sessions. With its combination of massive battery capacity and performance tuning, it delivers multi-day battery life with heavy use. If gaming endurance is your priority, the ROG 6D will outlast typical flagships in the same performance class.

Budget Phones with Long-Lasting Battery

Mid-range and budget phones often include efficient chips and lower-res screens, meaning their 5,000+ mAh batteries can last even longer in practice.

Motorola Edge 40 5G (4,400 mAh)

The Motorola Edge 40 5G is a premium mid-range phone that delivers exceptional battery life at an affordable price. With a 4,400 mAh battery, it manages over 15 hours of web browsing and exceeds 20 hours of video playback in tests. The MediaTek Dimensity 8020 chipset provides efficient power management, ensuring you get all-day usage on a single charge.

Available at Phonebot with a 144Hz OLED display, 68W fast charging, and 5G connectivity, the Edge 40 5G is perfect for those seeking great performance, design, and battery endurance without the premium flagship price tag.

OnePlus 9 Pro 5G (4,500 mAh)

The OnePlus 9 Pro 5G is a premium mid-range phone that delivers exceptional value with impressive battery performance. Featuring a 4,500 mAh battery, it achieves over 10 hours of web browsing and delivers all-day performance on a single charge. Powered by the Snapdragon 888 chipset with 65W fast charging, it completes a full charge in just 29 minutes.

Available at Phonebot with a stunning 120Hz AMOLED display and clean OxygenOS experience, the OnePlus 9 Pro 5G offers premium features and battery reliability at a competitive price point.

Refurbished Phones That Still Hold Up in 2025

Buying a recent flagship second-hand can yield top-tier battery life at a lower cost. These older models remain highly competitive in endurance.

Apple iPhone 13 Pro Max (4,352 mAh)

A modern classic, the iPhone 13 Pro Max is still a battery life king. It was rated for 25 hours of video streaming by Apple and achieved about 10+ hours of web browsing and 19 hours of video in independent tests. It outlasted its iPhone 12 Pro Max predecessor by a huge margin and even slightly beat the 14 Pro Max in some stress tests. In a YouTube streaming endurance test, the 13 Pro Max clocked 20 hours 5 minutes, virtually tying the newer Galaxy S23 Ultra. This means a used 13 Pro Max can still easily provide all-day heavy use in 2025.

Apple iPhone 14 Pro Max (4,323 mAh)

The iPhone 14 Pro Max has become Apple's best battery life phone. With a battery capacity of 4,323 mAh and the A16 Bionic chip's power management features, it can endure the busiest days. The adaptive refresh rate also helps in elongating the battery life. An always-on display is a battery-draining feature, but that's not the case with this phone. The phone also supports MagSafe wireless charging. Head to our Apple Refurbished iPhone collection and get the best iPhone 14 Pro Max price only at Phonebot.

Samsung Galaxy S23 Ultra (5,000 mAh)

Last year's Samsung flagship was readily available and refurbished, and its battery life is outstanding. TheS23 Ultra's Snapdragon 8 Gen 2 chip brought a significant efficiency jump – reviewers saw 13+ hours of web surfing in one go and around 11.5 hours of mixed heavy use (screen, video, apps), which edged out Apple's best-in-one test. In a controlled video rundown, it lasted 20 hours and 7 minutes, slightly beating the iPhone 13 Pro Max's 20h 5m.

Google Pixel 7 Pro (5,000 mAh)

While not quite on par with the iPhone 13 Pro or S23 Ultra, the Pixel 7 Pro delivered solid battery life that holds up. It can get around 6–7 hours of screen-on time in real use, thanks to Google's optimizations. It lasted over 13 hours in video playback tests and comfortably a full day of use per charge in reviews. As a refurb, it's cheaper to get Google's AI features and still expect an all-day battery. (The newer Pixel 9 Pro improved efficiency further, but the 7 Pro remains a decent battery performer if you find one at a bargain.)

Find the Best Battery Life Phone for Your Needs

Whether you go for the latest ultra-premium flagship or a reliable older model, you can find phones in every category that excel in battery endurance. The flagships combine big batteries and efficient chips to push past a day of use, gaming phones maximize mAh for marathon sessions, budget phones squeeze out multi-day life with frugal hardware, and even refurbished recent flagships can rival or beat many 2025 releases in screen-on-time. Always check reputable reviews and battery test results.

QUICK COMPARISON TABLE:  Best Battery Life Phones

Test results based on standardized web browsing tests at 150 nits screen brightness over 5G connectivity. Real-world battery life will vary based on usage patterns and settings.