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Start by checking Settings > Battery to find what is using power. Then try the changes that best match what you see: dim the display and enable Auto-Brightness, use Low Power Mode when you need extra runtime, and check Battery Health if drain persists. Menu names and feature availability vary by iPhone model and iOS version.
1. Find what is draining the battery
Before changing several settings, open Settings > Battery. Review any Suggestions or Insights, then check Daily Usage and app activity. Daily Usage compares the current day with the previous seven days, which can help you spot an unusual change or an app that is using more power than expected. Apple notes that battery life depends in part on how the device is used and which apps are running. Apple’s battery-drain guidance explains these screens.
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If an app or background activity stands out, address that first—for example, reduce how often you use a power-hungry app or review its background activity. Battery Insights may also identify ongoing software-update or device-setup work. Drain and warmth during that activity can be temporary; check again after it finishes before concluding that a setting or the battery itself is at fault.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchApple also recommends keeping iOS current. Install an available update when convenient, but if you have just updated or set up the iPhone, allow any indicated background activity to complete before judging battery life.
#1 Best Overall
- 40% Smaller & Lighter Portable Charger: Powered by the industry’s first TinyCell high-density battery technology, this ultra-compact 10,000mAh portable charger power bank is 40% smaller and 36% lighter than conventional chargers. Whether you are an office user slipping a mini small portable battery into a purse for commuting, or a student looking for lightweight college essentials, you get powerful daily carry convenience without the extra bulk to keep you powered on the go.
- 45W Pro Speed Portable Phone Charger: This 45W fast charger boosts an iPhone 17 Pro Max to 76%, a Galaxy S25 Ultra to 84%, or an iPad Pro to 60% in just 30 minutes (charging from 20%). Whether you are a driver needing a quick portable charger for car, a commuter relying on a desk phone charger, or a gamer wanting a seamless Switch battery pack and Steam deck charger portable, you will spend less time tethered to a wall and more time enjoying your day.
- Detachable Cable for Multiple Devices: Unlike a standard portable charger with built in cable that becomes useless if the cord breaks, INIU's 0.4ft detachable braided USB-C cable can be swapped anytime to save your investment. It effortlessly transforms into a versatile travel charger for multiple devices, ensuring your family or group travelers always have a reliable portable charger for all cell phones to keep everyone connected without carrying messy cords.
- Airline-Safe Travel Essentials: This TSA-compliant, flight safe power bank provides nearly 2 full charges for your smartphone, making it the perfect battery pack flight safe for business trips, cruise vacations, and airplane travel essentials. Beyond flights, it empowers campers, hikers, and outdoor users with ultimate camping essentials and road trip essentials—so you can explore freely without battery anxiety, making it ideal gifts for travelers women and men.
- Trusted Emergency Backup: As the SAFE Fast Charge Pro trusted by over 38 million users, we ensure the safest charging with the highest-grade materials. When unexpected storms or hurricanes strike, it acts as a lifeline—providing a dependable power outage battery backup and emergency phone charger for emergency users.
2. Reduce display power use
Dim the screen and enable Auto-Brightness
A bright display can use substantial power. Lower brightness in Control Center or go to Settings > Display & Brightness. To let the ambient-light sensor adjust brightness to your surroundings, go to Settings > Accessibility > Display & Text Size and turn on Auto-Brightness. Apple cautions that “Turning off Auto-Brightness may increase power consumption.” Apple’s brightness guidance describes the sensor and manual adjustment.
Shorten how long the screen stays on
If the display often remains on while the phone is idle, choose a shorter interval under Settings > Display & Brightness > Auto-Lock. The shorter the interval, the sooner the display turns off after inactivity; choose one that still suits how you use the phone.
Rank #2
- Slim and Portable: At just 0.58 × 2.78 × 4.09 inches, this 10,000mAh Anker power bank delivers exceptional portability without compromising power capacity. It can provide up to 1.8 charges for an iPhone 15 Pro.
- Versatile Charging Options: Equipped with a 15W max Qi wireless charging pad and a 30W max USB-C port, you can effortlessly charge your devices at home or on the go.
- Premium Design and Durability: Featuring a sleek matte finish, a sturdy metal frame, and aerogel thermal insulation for cool operation, this power bank combines everyday comfort with long-lasting durability.
- Device Compatibility: Specially designed for the iPhone 12 / 13 / 14 / 15 / 16 series, offering 15W max magnetic fast charging. This product is designed for iPhone. We do not recommend using it with Android phones, as differences in fit or alignment may affect placement or result in slower charging speeds.This power bank is flight-approved and complies with air travel regulations in the United Sates and most countries. Howeveer, it does not have China's 3C certification and cannot be carried on domestic flights within China.
- What You Get: Anker MagGo Power Bank (10K, Slim), 23.62" / 60 cm USB-C to USB-C cable, welcome guide, 24-month worry-free warranty, and lifetime support.
Turn off Always-On display if your model has it
On supported models, you can switch off Always-On display at Settings > Display & Brightness > Always On Display. The option is not available on every iPhone; Apple’s cited guidance covers iPhone 14 Pro and later models that include the feature. Check Apple’s model-specific display guidance if you do not see the setting.
3. Use Low Power Mode when you need more time between charges
Low Power Mode is a useful manual choice when the battery is low or you expect to be away from a charger. Apple says, “Low Power Mode reduces the amount of power that your iPhone uses when the battery gets low.”
Rank #3
- Precise Magnetic Alignment, Rock-Solid Hold: Designed for MagSafe-compatible iPhones, this magnetic portable charger delivers a strong 15N magnetic hold for precise alignment and stable wireless charging. Whether you're taking calls, snapping selfies, or using your phone on the go, this magnetic power bank stays firmly attached. Compatible with iPhone 18 Pro/18 Pro Max, for iPhone 17/17 Air/17 Pro/17 Pro Max, for iPhone 16/16 Plus/16 Pro/16 Pro Max, for iPhone 15/15 Plus/15 Pro/15 Pro Max, for iPhone 14/14 Plus/14 Pro/14 Pro Max, for iPhone 13/13 Mini/13 Pro/13 Pro Max, for iPhone 12/12 Mini/12 Pro/12 Pro Max, and MagSafe-compatible cases. Not compatible with non-magnetic cases.
- Slim & Portable — Power Without the Bulk: Bulky power banks just don't fit your active lifestyle. That's why we designed the W5 for MagSafe portable charger to keep you moving. Weighing just 120g and only 11.8mm thick, W5 iPhone battery power bank doesn’t block your camera or get in the way. Snap photos, game, or take calls while charging — all without the hassle of awkward bulk. Plus, crafted with a tough yet lightweight shell, it’s impact-resistant, TSA-approved, and sleek enough for daily use.
- 5000mAh Capacity, Ready When You Need It: The W5 iphone portable charger is designed to balance portability and reliable backup power. Its 5000mAh battery can provide up to one full charge for an iPhone 16, making it ideal for commuting, travel, and everyday emergencies. Stay connected for calls, navigation, photos, and more without worrying about running low on battery.
- Flexible Charging – Wired or Wireless, Your Choice: Use it as a wireless charger for convenient cable-free power, or switch to USB-C wired charging whenever you prefer. This portable charger gives you the freedom to choose how you power up, while the USB-C output also works with AirPods, for iPad, for Apple Watch, and other compatible devices. Need to charge two devices? This magnetic power bank supports wired and wireless charging at the same time, making it a versatile for iPhone charger for travel, work, and everyday use.
- Multi-Layer Protection, Lasting Battery Health: Built with an intelligent cooling chip, the W5 portable charger power bank safeguards your devices with comprehensive protection: overcharge, overheat, over-voltage, over-current, and short-circuit prevention. This advanced power management keeps your battery in top condition, even with prolonged charging. Charge day and night without worry — your device’s safety is our priority.
- iPhone 14 and earlier: Open Settings > Battery, then turn on Low Power Mode.
- iPhone 15 and later: Open Settings > Battery > Power Mode, then turn on Low Power Mode.
It reduces or pauses some activity to save power. Auto-Lock defaults to 30 seconds, display brightness is reduced, some visual effects are turned off, and iCloud Photos may pause temporarily. Automatic downloads, email fetch, and Background App Refresh are turned off. Some tasks may also run more slowly, so background updates or newly fetched email can be delayed. Low Power Mode turns off automatically once the iPhone charges to 80% or higher. Apple does not give a guaranteed number of extra minutes or hours, since the result depends on use and conditions. See Apple’s Low Power Mode guidance for details.
4. Choose between Adaptive Power and Low Power Mode
Adaptive Power makes supported adjustments automatically; Low Power Mode is a direct power-saving setting you turn on yourself, except when Adaptive Power is configured to trigger it. Both can limit background activity, but Low Power Mode also changes several named settings and can slow some tasks.
Rank #4
- High Capacity in a Compact Body: With a 10,000mAh battery, this power bank delivers reliable power to keep multiple devices charged throughout the day. Compatible with iPhone 18/17/16/15/14/13/12 Pro/Max/Plus. Despite its high capacity, it’s designed to be lightweight and portable, easily fitting into your bag or pocket. Perfect for travel, work, or daily commutes, it ensures you stay connected and productive without the extra bulk. A great balance of power and portability for users on the go.
- Fast and Efficient 20W Charging: Equipped with powerful 20W fast-charging technology, this portable charger significantly cuts down charging time. Quickly charge smartphones, tablets, and other devices without long waits. Compatible with various devices and brands, it offers stable and efficient power delivery every time. Ideal for busy users who need their devices ready to go at all times. Stay powered and save time with faster charging speed.
- Charge Up to 5 Devices at Once: Designed for multi-device users, this power bank features five output ports, allowing you to charge up to five devices simultaneously. Whether it's your phone, earbuds, smartwatch, or tablet, power them all at once without compromising speed. Compatible with iPhone 18/17/16/15/14/13/12 Pro/Max/Plus and more. The single input port supports fast recharging, so you’re always ready to go with minimal downtime.
- Clear LED Digital Display: Stay informed with the built-in LED digital screen that shows real-time battery percentage. No more guessing how much charge is left—get accurate info at a glance. The clear, easy-to-read display helps you manage power usage and know exactly when it’s time to recharge. Whether at home or on the move, you’ll always know your charging status, making power management simple and stress-free.
- Advanced Multi-Level Protection: Your safety is our priority. This power bank features comprehensive protection, including safeguards against over-temperature, over-current, short circuit, and more. These advanced safety features protect both your devices and the power bank itself, ensuring safe and reliable charging. With smart protection built-in, you can charge confidently, knowing your devices are secure every step of the way.
| Feature | Adaptive Power | Low Power Mode |
|---|---|---|
| How it works | Automatically adjusts settings such as screen brightness and background activity, and may make performance adjustments. | You turn it on manually; it reduces power use through a broader set of changes. |
| Availability | Only on supported iPhone models with the required iOS version; it may be on or off by default depending on the model. | Available through Battery settings; the path differs between iPhone 14 and earlier and iPhone 15 and later. |
| Low-battery trigger | Can turn on Low Power Mode when the battery reaches 20%. | Turns off after charging to 80% or higher. |
| Tradeoff | May reduce brightness, background activity, or performance automatically. | Can delay fetches and downloads, pause some activity, and make some tasks slower. |
To find Adaptive Power, go to Settings > Battery > Power Mode. Apple lists the iPhone 17 family and iPhone Air as having it on by default; supported earlier models may have it off by default. The cited support guidance identifies iPhone 16 models and iPhone 15 Pro and iPhone 15 Pro Max with iOS 26 or later among compatible devices. Availability depends on both model and software, so check Apple’s current compatibility information before looking for the control. Apple’s Power Modes guide describes the settings.
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5. Check whether battery condition is the issue
If battery life remains poor after you have checked usage and adjusted relevant settings, look at battery condition. On iPhone 15 and later, go to Settings > Battery > Battery Health. On iPhone 14 and earlier, go to Settings > Battery > Battery Health & Charging. If the screen shows Service, Apple advises considering battery replacement. This indicates a battery-condition issue, not one that ordinary settings changes can fix. See Apple’s battery guidance for next steps.
Quick Recap
Best Value
- 40% Smaller & Lighter Portable Charger: Powered by the industry’s first TinyCell high-density battery technology, this ultra-compact 10,000mAh portable charger power bank is 40% smaller and 36% lighter than conventional chargers. Whether you are an office user slipping a mini small portable battery into a purse for commuting, or a student looking for lightweight college essentials, you get powerful daily carry convenience without the extra bulk to keep you powered on the go.
- 45W Pro Speed Portable Phone Charger: This 45W fast charger boosts an iPhone 17 Pro Max to 76%, a Galaxy S25 Ultra to 84%, or an iPad Pro to 60% in just 30 minutes (charging from 20%). Whether you are a driver needing a quick portable charger for car, a commuter relying on a desk phone charger, or a gamer wanting a seamless Switch battery pack and Steam deck charger portable, you will spend less time tethered to a wall and more time enjoying your day.
- Detachable Cable for Multiple Devices: Unlike a standard portable charger with built in cable that becomes useless if the cord breaks, INIU's 0.4ft detachable braided USB-C cable can be swapped anytime to save your investment. It effortlessly transforms into a versatile travel charger for multiple devices, ensuring your family or group travelers always have a reliable portable charger for all cell phones to keep everyone connected without carrying messy cords.
- Airline-Safe Travel Essentials: This TSA-compliant, flight safe power bank provides nearly 2 full charges for your smartphone, making it the perfect battery pack flight safe for business trips, cruise vacations, and airplane travel essentials. Beyond flights, it empowers campers, hikers, and outdoor users with ultimate camping essentials and road trip essentials—so you can explore freely without battery anxiety, making it ideal gifts for travelers women and men.
- Trusted Emergency Backup: As the SAFE Fast Charge Pro trusted by over 38 million users, we ensure the safest charging with the highest-grade materials. When unexpected storms or hurricanes strike, it acts as a lifeline—providing a dependable power outage battery backup and emergency phone charger for emergency users.
A practical order to try
- Check Settings > Battery for app usage, Suggestions, and Insights.
- Dim the display, enable Auto-Brightness, and shorten Auto-Lock if it fits your routine.
- Use Low Power Mode when you need to conserve charge, knowing that background activity and some tasks may be limited.
- Enable Adaptive Power if your iPhone supports it and you want automatic adjustments.
- Check Battery Health if the drain continues, and consider service if it reports “Service.”
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