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Best Phones for Battery Life

The 5 Best Phones for Battery Life in 2026 (We Tested Every One to Zero)

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By

Ethan Walker

June 16, 2026

Mobile

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Smartphone showing a full battery icon, representing all-day phone battery life

We put 2026's most-hyped flagships through the same brutal day: hours of screen-on time, gaming, GPS navigation and back-to-back video calls, all the way down to 0%. Some barely scraped past dinner. These five didn't just survive a full day, most of them rolled comfortably into a second. Here are the phones worth buying if battery anxiety is a thing of your past.

Our Top Pick

OnePlus 13 — Best Overall Battery Life

The longest dependable all-day battery in this test, plus 100W charging that refills it in about 35 minutes. If you just want the safe pick, start here.

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★ Editor's Choice

1. OnePlus 13 — The All-Day Champion

Battery: 6,000mAh · 100W wired charging · ~1.5-day endurance

The OnePlus 13's enormous 6,000mAh silicon-carbon battery is exactly why it tops this list. In our mixed-use testing it comfortably cleared a day and a half on a single charge, and when you do finally run it down, 100W wired charging refills it from empty to full in roughly 35 minutes. For most people, this is the phone to beat in 2026.

"The first flagship in years I stopped instinctively topping up at lunch — it simply doesn't need it." — TechUnboxed battery test

OnePlus 13 smartphone

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2. RedMagic 10S Pro — The Endurance Monster

Battery: 7,050mAh · 80W charging · 11+ hrs screen-on time

Built for marathon gaming sessions, the RedMagic 10S Pro packs a colossal 7,050mAh cell without turning into a brick in your pocket. It posted the longest screen-on time of anything we tested — north of 11 hours — and its built-in cooling fan keeps performance from throttling deep into a session. If raw stamina is all you care about, nothing here outlasts it.

"Two full days of ordinary use, or one long-haul flight of nonstop gaming. It simply refuses to die." — TechUnboxed battery test

RedMagic 10S Pro gaming smartphone

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Best Value

3. Samsung Galaxy S25 Ultra — The Balanced All-Rounder

Battery: 5,000mAh · 45W charging · Reliable all-day life

The S25 Ultra pairs a 5,000mAh battery with Samsung's most efficient chip yet, delivering dependable all-day life even with that big, bright display working hard. It isn't the longest-lasting phone on this list, but factor in the cameras, the S Pen and years of software updates and it's the easiest of the bunch to live with day to day.

"Flagship endurance with none of the compromises you usually trade away to get it." — TechUnboxed battery test

Samsung Galaxy S25 Ultra smartphone

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4. iPhone 16 Pro Max — The Efficiency King

Battery: ~4,685mAh · Best-in-class standby · All-day-plus

Apple doesn't win on raw battery capacity, but tight hardware-and-software integration lets the 16 Pro Max squeeze remarkable life from its cell. It recorded the best standby drain in our entire test — leave it off the charger overnight and you'll lose a percent or two, not ten. For iPhone owners, it's simply the longest-lasting one yet.

"Best-in-class standby. There's still gas in the tank the next morning, every single time." — TechUnboxed battery test

Apple iPhone 16 Pro Max smartphone

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5. Google Pixel 9 Pro XL — The Smart Saver

Battery: 5,060mAh · Adaptive Battery AI · Full-day smart saving

The Pixel 9 Pro XL leans on Tensor's on-device AI to manage power intelligently. Adaptive Battery learns your daily routine and quietly rations the 5,060mAh cell to get you to bedtime, while clean software means fewer rogue background apps draining you in the first place. It's the smartest battery management on this list.

"It learns your day and budgets the power for you, so you stop thinking about charging at all." — TechUnboxed battery test

Google Pixel 9 Pro XL smartphone

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Disclaimer: TechUnboxed is an independent reviews publication. Some links on this site are affiliate links — if you click through and buy, we may

earn a small commission at no extra cost to you. This never influences which products we cover or the scores we award. Editorial content is

produced independently of any commercial relationships, and every product reviewed is purchased at retail or returned after testing unless

explicitly noted. Star ratings, scores and “best of” picks reflect our team’s testing methodology and are accurate at time of publication;

specifications, prices and availability may change. Always verify critical details with the retailer before buying.

TechUnboxed Full Logo

Independent tech reviews.

Bought at retail, tested for

weeks, scored honestly. Made

in London, read in 47 countries.

Reviews

Latest

Editor's picks

Long-term tests

Re-scored

About

How we review

The team

Editorial standards

Contact

Follow

© 2026 TechUnboxed Ltd.

Privacy

Terms

Affiliate disclosure

Disclaimer: TechUnboxed is an independent reviews publication. Some links on this site are affiliate links — if you click through and buy, we may

earn a small commission at no extra cost to you. This never influences which products we cover or the scores we award. Editorial content is

produced independently of any commercial relationships, and every product reviewed is purchased at retail or returned after testing unless

explicitly noted. Star ratings, scores and “best of” picks reflect our team’s testing methodology and are accurate at time of publication;

specifications, prices and availability may change. Always verify critical details with the retailer before buying.