The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →There is no reliable single winner in an iPhone battery-life ranking unless the phones were tested with the same workload and conditions. Apple’s playback figures, a cellular web-browsing test and a YouTube-streaming estimate measure different things. Choose the test that resembles your use, then compare models within that test—not by putting every published hour in one leaderboard.
Start with the workload you want to compare
Battery life depends on what the phone is doing. A downloaded movie played locally puts different demands on a phone than video streamed over a network, websites loaded over cellular, or a varied day of apps and idle time. Before comparing numbers, identify what each test runs, how it connects, and how its runtime is measured.
As an Amazon Associate I earn from qualifying purchases.
- Downloaded-video playback: useful for comparing sustained local video playback under the test’s stated settings. It does not mean the same number of hours of ordinary screen-on use.
- Streamed video: includes network activity as well as playback, so it may better resemble watching online video. Results still depend on the network and the test’s settings.
- Cellular web browsing: repeated page loads test a different pattern of radio and display use than continuous video.
- Mixed-use estimates: aim to represent varied activity, but depend on the usage profile and method used to produce the estimate.
Apple cautions that battery life varies with use, configuration, cellular network and signal strength, among other factors. Its official test disclosures are useful precisely because they describe a controlled workload; they should not be mistaken for a promise of how long a particular person’s phone will last.
Recommended Free Tools
What Apple’s playback figures do—and do not—tell you
Apple’s video-playback disclosure describes repeated purchased HDR movies and specifies conditions including LTE/5G subscriptions, Bluetooth headphones and Wi-Fi association. Wi-Fi Ask to Join Networks, Auto-Brightness and True Tone are turned off. This is a defined playback test, not a measurement of general screen-on time or a typical day. Apple’s iPhone battery test disclosures also describe a separate typical-use profile dated August 2026, based on median user usage and a mixture of passive and active apps. That profile is distinct from the repeated-movie playback test.
#1 Best Overall
- EXTENDED BATTERY LIFE: Get up to 50% more power with the Mophie Juice Pack’s 3,600mAh rechargeable battery, so you can text, stream, and navigate without worrying about running out of charge
- SMART PRIORITY CHARGING: When plugged in, the Juice Pack directs power to your iPhone first, then recharges itself, ensuring your phone always gets the power it needs when you need it most
- SLIM, PROTECTIVE DESIGN: Lightweight, pocket-friendly charging case with raised edges that guard against drops, scratches, and screen damage while keeping a smooth scrolling experience
- VERSATILE USB-C PORT: Charge your iPhone directly, recharge the case, or plug in USB-C headphones — plus, enjoy seamless compatibility with corded accessories
- MAGNETIC & SUSTAINABLE: Built-in magnet secures to wallets, mounts, and stands, while a lanyard loop adds carrying flexibility , without magnetic charging functionality — crafted with up to 50% post-consumer recycled plastics for eco-friendly durability
Use the playback figure when sustained video playback is the question. Use the typical-use profile as a separately described estimate of varied use. Neither makes the other protocols directly comparable, and neither establishes one universal daily runtime for every model and owner.
What independent tests measure
Cellular website cycling: TechRadar
TechRadar’s 2026 test cycled websites over cellular until the phones depleted. The test disabled location services, Wi-Fi, Bluetooth and iOS battery management. Within that one protocol, it reported:
Rank #2
- [Never out of power]: Our charging battery case elevates your iPhone 14/ 14 Pro experience by having power anywhere you go! With our battery charger case, you no longer need a power bank, as power is always in your hands and on your iPhone.
- [Convenient design]: Enjoy hassle-free charging for the battery case and your phone together without removing the case. Our battery case is designed to charge your iPhone first before charging the battery case. Remove the case and charge separately to recharge the case faster.
- [Ultimate protection]: Our durable charging case is equipped with raised bezels, which ensures full protection for your iPhone 14/14 Pro, including a robust tempered glass shield that withstands drops, impacts, and daily wear.
- [Wireless case charging]: Our battery case is capable of being wirelessly charged. Cable charging is also available to charge the case and your iPhone 16 Pro at the same time. Your iPhone is charged with a port inside the battery case.
- [What you get]: The Alpatronix iPhone 14 /14 Pro battery charging case is designed in California and includes a 1-year warranty and exceptional customer service. The product package includes: Battery Case, Tempered Glass Screen Protector, USB-C Charging Cable, User Manual.
| iPhone model | Runtime reported |
|---|---|
| iPhone 18 Pro | 16 hours 17 minutes |
| iPhone 17 Pro | 15 hours 21 minutes |
| iPhone 18 Pro Max | 18 hours 27 minutes |
| iPhone 17 Pro Max | 17 hours 54 minutes |
These results are most useful for comparing the named models under TechRadar’s cellular browsing protocol. They do not predict the same runtime for video playback or a person’s mixed-use day. See TechRadar’s test and model comparison.
YouTube-streaming estimate: PhoneArena
PhoneArena used five hours of continuous YouTube streaming under equal conditions to estimate total endurance. Its 2026 article reported:
Rank #3
- 【Powerful 7500mAh Charging Life】The iPhone 13/13Pro/14 charging case has a built-in 7500mah battery, Extends charging life of iPhone by 200 percent,Increased charging range of the phone,Note: Only compatible with iPhone 13/13Pro/14, not compatible with iPhone 14 pro/14/13Plus/14/13 pro max/iPhone 13mini, please use the original charger to charge, and the first time you get the product will be charger full before using, does not support wireless charging.
- 【360°Full Protection】Phone charging case protects your device from scratches, dents, bumps and damages, raised bezel provides protection for the front and surface, comes with tempered glass screen protector to provide full protection for the front.
- 【Super Craft and Multiple Security Protections】Adopting advanced materials and welding technology makes our battery case last longer than other battery cases. Built-in smart charging internal chip protects your cell phone from overcharging, overdischarging, overheating, overcurrent, short-circuit and other dangers while charging.
- 【Easy to Use & LED Indicator】Bend the soft rubber at the top of the extended battery and push the phone into the bottom of the charger case. The charging battery case has a built-in upgrade button with more responsive commands so you can easily switch the case on and off. Press the power button on the phone's battery case for 3 seconds to start and turn off charging your iPhone. Press the power button to check the battery level, the LED indicator light lets you know the battery level (25%-50%-75%-100%).
- 【Charging Safety and Protection 2 in 1】Our durable iPhone 13/13 Pro/ 14 charger case is equipped with raised bezels and tempered glass screen protector offer full front and surface protection that avoid drops,impacts,and daily wear. Certificated UL,CE,FCC,RoHS and Internal upgrade chips protect your phone from over-heating, short-circuiting and over-charging.
| iPhone model | Estimated endurance |
|---|---|
| iPhone 18 Pro | 8 hours 46 minutes |
| iPhone 17 Pro Max | 9 hours 37 minutes |
| iPhone 18 Pro Max | 12 hours 49 minutes |
These are estimates based on a five-hour streaming test, not Apple playback hours or direct, continuous depletion results under the cellular website protocol. Compare these estimates within PhoneArena’s method. PhoneArena’s comparison describes the test.
Side-by-side drain test: Tom’s Guide
Tom’s Guide’s 2026 battery drain test reported 18 hours 27 minutes for iPhone 18 Pro Max and 17 hours 38 minutes for iPhone 16 Pro Max. This is a useful comparison between those two named models under that publication’s test, not a general forecast for every user or a result that can be ranked directly against another publication’s workload. See Tom’s Guide’s comparison.
Rank #4
- 【IMPORTANT NOTE】This battery case ONLY FOR iPhone 14, iPhone 13 Pro, and iPhone 13 (6.1-inch models). ❤NOT FIT for iPhone 14 Plus, iPhone 14 Pro, or other USB-C models and devices.❤ ❤NOT support CarPlay, Magsafe or Wireless Charging.❤
- 【7500mAh Battery Charger & Phone Case 2-in-1 】The high capacity 7500mAh replacement charging case meets all major airline carry-on regulations, offers over 150%+ additional power for iPhone 14/13 Pro/13, perfect as a backup power pack case for commuting, traveling, business trips, daily or outdoor use.
- 【Advanced Smart Chip & Sync-Data Supported】UL, CE, FCC, TUV, UN and RoHS tested portable battery charger case equipped with an upgraded smart chip provides comprehensive reliable protection against overcharging, overcurrent, overvoltage, over-discharging, overheating, overload, and short circuits etc., while supporting seamless data sync with your EarPods, headphones, MacBook, PC, laptop and other devices.
- 【360° Protection & Anti-Drop Design】Crafted with durable and anti-slip texture, this for iPhone 14 charging cover provides 360° full protection against accidental falls and scratches with tempered glass screen protector. The Ultra-slim, pocket-friendly lightweight design offers a comfortable grip, far superior to traditional power banks.
- 【Hassle-Free Power Solution】This charger case for iPhone 14/13 can be installed easily requiring no using any tools. The built-in charging port allows direct charging without removing the case, simultaneously powering both your phone and its internal battery, making it a hassle-free backup power solution. The 4 LED indicators display the battery capacity (25%, 50%, 75%, 100%), allowing monitor power levels at a glance and plan charging conveniently.
How to decide whether two results are comparable
Check these details before drawing a conclusion. If an article does not state a detail, treat the comparison as less informative rather than assuming the conditions match.
- Workload: local playback, streaming, browser cycling or mixed use?
- Network and signal: Wi-Fi or cellular, which network generation, and what signal conditions?
- Display and audio: what brightness, display features, resolution or sound setup did the test use?
- Software and battery condition: which software version and battery state or health? A newer or healthier battery can affect runtime.
- Region and model variant: do the model names and regional versions match the devices you are considering?
- Measurement and date: did the phone run continuously until depletion, or did the publisher estimate total endurance from a shorter test? When was it tested?
When the protocol matches, its within-test ranking is the soundest comparison available. When protocols differ, report each result with its workload and method; do not calculate a combined score or declare a cross-publication winner. The published examples above do not constitute a matched test of every current iPhone under one common protocol.
Which iPhone has the best battery life?
The answer depends on the workload and test. Among the models in TechRadar’s cellular website-cycling test, iPhone 18 Pro Max recorded the longest runtime. In PhoneArena’s YouTube-based endurance estimates, iPhone 18 Pro Max also had the longest estimate among the three listed models. Tom’s Guide’s side-by-side result favors iPhone 18 Pro Max over iPhone 16 Pro Max in its own drain test. Those findings support comparisons within each named test; they do not prove a universal winner across all use cases.
For a purchase decision, prioritize the protocol closest to your routine—streaming if you watch online video, cellular browsing if you spend much of the day on the mobile network, or Apple’s disclosed playback test if local video matters. Treat any difference between models as test-specific, because network conditions, configuration and use change real-world endurance.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Free tools Windows power users keep installed
One-click scans. No signup required.
