Knowing how to choose a power bank for your phone is an important step when just leaving the house for a day, much less planning a long or overseas journey. As overseas travelers are focused on connectivity more than ever before, a reliable, affordable power bank is a must-have for anyone setting out to explore faraway lands.

As you explore the various options for power banks, here are some key questions to consider when choosing a phone power bank:

  • How many devices will need a portable charge? How many ports do you need?
  • Do you want a device compatible with your phones fast charge capabilities?
  • Wireless, cord, or both charging?
  • How often do you expect to be away from easily accessible power sources?
  • Are there weight limitations involved with your baggage (for example, will you be hiking and carrying heavy gear and equipment during your travels)?
  • Do you have older devices that might present compatibility issues?
  • What is your budget?

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About How to Choose a Power Bank for Your Phone

First, we’ll begin by explaining how a power bank works. A portable power bank stores electrical energy supplied by an outlet and allows you to “deposit” that energy later into a mobile device. Power banks have to be charged, sometimes for a considerable period of time, but will store enough electrical energy to fully power a device several times over. It should be noted that power banks will always experience loss due to resistance, so the full capacity of the power bank is not transferred to the device, and this is a factor when we calculate and estimate how many times a particular device can be charged. Additionally, the lower the charge on your device, the more the portable power bank has to work to recharge it. So, ideally, you do not want to wait until the device is fully depleted of battery life before using a portable power bank.

Almost any device that is USB charged can be used with a portable power bank provided you remember to keep the power bank charged! It is best to remove the power bank from the charge as soon as it is full and most have an LED indicator to display full capacity. Some come with an “auto cutoff” feature as well.

A general guideline for the charge provided by varying mAh batteries is as follows:

  • 1500 mAh: typically one full charge of a cell phone
  • 5200 mAh: typically two full charges of a cell phone and a tablet to 50%
  • 10000 mAh: typically four full charges of a cell phone and a tablet to 100%

Higher mAh units are available as well. These will be more expensive options, but possibly beneficial to those with numerous devices to charge during travel.
Environmental conditions can affect the lifespan of a portable power bank and you should keep this in mind as you decide to invest in one. For example, if you plan to travel for long periods of time in extreme weather conditions, this may have an impact on the long-term durability of the power bank you choose.

When deciding how to choose a power bank for your phone, check your devices for their battery capacity, which is measured in milliamp hours (mAh). As long as your portable power bank exceeds the mAh number on the device, you will get a full charge out if it, if not several. Be sure to consider if you plan to charge multiple devices. If this is the case, you will need a portable power bank with more than one output to charge the devices simultaneously. Obviously, these models can be more expensive, but they can also save precious time during travel.

You will also need to check compatibility with the portable power banks to make sure your devices are included or you can compare its specs to your existing charger. You do not want to find out in the midst of travel that your cable and the power bank produce a very slow charge. Additionally, the output voltage of the power bank should be equal to or higher than your device.


Recommended Phone Power Banks & Portable Chargers

A few recommended portable power banks for travelers and some of their key features are outlined below and at Best Power Banks for Your Phone.

Anker PowerCore 20100 Portable Charger

The Anker PowerCore intelligently identifies connected devices and can charge the iPhone 6s up to seven times, the Galaxy S6 up to five times, or the iPad mini 4 twice. Weighs 12.56 ounces and can simultaneously charge two devices. Comes with a portable charger, a Micro USB cable, a convenient and protective travel pouch, a welcome guide, and an 18-month warranty for users.

Read our review: Anker PowerCore 20100 Portable Charger Review

Sale
Anker PowerCore 20100mAh Portable Charger - Ultra High Capacity Power Bank with 4.8A Output and PowerIQ Technology, External Battery Pack for iPhone, iPad & Samsung Galaxy & More Blue
19,368 Reviews
Anker PowerCore 20100mAh Portable Charger - Ultra High Capacity Power Bank with 4.8A Output and PowerIQ Technology, External Battery Pack for iPhone, iPad & Samsung Galaxy & More Blue
  • The Anker Advantage:Join the 50 million+ powered by our leading technology.
  • Ultra-High Capacity:Weighs as little as a can of soup (12.5 oz) yet charges the iPhone 8 almost seven times, the Galaxy S8 five times or the iPad mini 4 twice.
  • High-Speed Charging:PowerIQ and VoltageBoost combine to deliver the fastest possible charge (does not support Qualcomm Quick Charge). Recharges itself in 10 hours with a 2 amp charger, phone chargers (generally 1 amp) may take up to 20 hours.
  • Certified Safe:Anker's MultiProtect safety system and high-quality LG battery cells ensure complete protection for you and your devices.
  • What You Get:Anker PowerCore 20100 Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. USB-C cable and Lightning cable for iPhone/ iPad sold separately.

Hokonui Wireless Portable Charger

Hokonui Wireless Portable Charger is a top Amazon choice with rave reviews by most customers, many of whom claim it is the best portable charger they've ever used. Charge up to 4 Devices at once, supports fast charging on phones with the feature, charges itself quickly, in 4-5 hours, which is super fast compared to most other portable batteries.

Read our review: Hokonui Wireless Portable Charger

SaleBestseller No. 1
Portable Charger Power Bank, Hokonui 20000mAh External Battery Packs Quick Charge 3.0 with 3 Inputs & 3 Outputs Compatible for iPhone, Samsung Galaxy S9 Plus/S9/S8 Plus/S8, iPad and More 5647470064
  • 3A Charging Charge compatible devices at high speed with 5V 3A output, charge 3 USB-A devices simultaneously. Recharge your portable charger via Lightning USB-C or Micro USB, no more extra usb cables you have to carry, charge your device and recharge the power bank just by using 1 usb cable.
  • Large Capacity: 20000mAh of power charges iPhone XS Max almost 6 times, Samsung Galaxy S9 almost 5. 5 times, iPad Mini at least 3. 5 times and any other USB devices multiple times.
  • Strong Compatibility: Compatible with all 5V USB-powered devices including iPhone X/XR/XS/XS Max, iPhone 8/8 Plus/7/7Plus, Galaxy S9 Plus/S9/ S8 Plus/ S8, iPad, Nintendo Switch and other iOS and Android devices.
  • Smart and Safe: Stop charging when the device is full charged, prevent over-charging, overheat, short circuit and extend the service life of your phone. Led display will show the remaining power and will let you know when you should recharge it or when it is fully recharged.
  • 1 Year Time : 12 months quality assurance, New Replacement or Refund without Return in 30 days. We are committed to improving product quality and reducing product defects. If there is any quality problem, please feel free to contact us, we will do our best to providing you a pleasant shopping experience


Amazon Portable Phone Charger Best Sellers

SaleBestseller No. 1
Anker PowerCore 10000 Portable Charger, One of The Smallest and Lightest 10000mAh Power Bank, Ultra-Compact Battery Pack, High-Speed Charging Technology Phone Charger for iPhone, Samsung and More.
16,332 Reviews
Anker PowerCore 10000 Portable Charger, One of The Smallest and Lightest 10000mAh Power Bank, Ultra-Compact Battery Pack, High-Speed Charging Technology Phone Charger for iPhone, Samsung and More.
  • The Anker Advantage: Join the 50 million+ powered by our leading technology.
  • Remarkably Compact: One of the smallest and lightest 10,000mAh portable chargers. Provides almost three-and-a-half iPhone 8 charges or two-and-a-half Galaxy S8 charges.
  • High-Speed Charging: Anker’s exclusive PowerIQ and VoltageBoost combine to deliver the fastest possible charge for any device. Qualcomm Quick Charge not supported.
  • Certified Safe: Anker’s MultiProtect safety system ensures complete protection for you and your devices.
  • What You Get: Anker PowerCore 10000 portable charger, Micro USB cable, travel pouch, welcome guide, our worry-free 18-month warranty and friendly customer service. USB-C and Lightning cable for iPhone / iPad sold separately
Bestseller No. 2
INIU Power Bank, Ultra-Slim Dual 3A High-Speed Portable Charger, 10000mAh USB C Input & Flashlight External Phone Battery Pack for iPhone Xs X 8 Plus Samsung S10 Google LG iPad etc. [2020 Upgrade]
9,555 Reviews
INIU Power Bank, Ultra-Slim Dual 3A High-Speed Portable Charger, 10000mAh USB C Input & Flashlight External Phone Battery Pack for iPhone Xs X 8 Plus Samsung S10 Google LG iPad etc. [2020 Upgrade]
  • ✅ 【INIU’s Confidence】At INIU, we use only the highest-grade materials, so we do have the confidence to provide industry-leading 3 years warranty.
  • ✅ 【Ultra Slim】The thinnest 10000mAh power bank on the market, easily slips into any of your pockets or bags.
  • ✅ 【High-speed Charging】INIU’s exclusive UPower+ technology to intelligently identify your devices and auto-adjust the output up to 3A, let your charging always 1.4x outpace your mates.
  • ✅ 【Cool Design】Sleek exterior feels so great in your hand, unique paw indicator is icing on the cake beyond your expectation.
  • ✅ 【Handy Flashlight】Simply click the power button twice to turn on/off it. Comes in handy for reading camping blackout or emergency.
Bestseller No. 3
2-Pack Miady 10000mAh Dual USB Portable Charger, Fast Charging Power Bank with USB C Input, Backup Charger for iPhone X, Galaxy S9, Pixel 3 and etc
876 Reviews
2-Pack Miady 10000mAh Dual USB Portable Charger, Fast Charging Power Bank with USB C Input, Backup Charger for iPhone X, Galaxy S9, Pixel 3 and etc
  • 【2-Pack 10000mAh Power Bank】Two 10000mAh battery packs not only for portable charging but also around the home. Allowing you charge mobile devices without having to be tethered to a plug socket. Each of them fully charges 2.4 times for iPhone X, 3.6 times for iPhone 8 and 2.2 times for Samsung Galaxy S9.
  • 【Dual Output & Input】Each has 2 USB output ports that detect all the connected devices and efficiently distributes the current output up to 5V 2.1A. The USB C and Micro USB ports can fully refill the battery itself in 5 hrs at 5V 2.0A.
  • 【Reliable Li-polymer Cell】Thanks to the Li-polymer battery pack, the charger is much safer than any Li-ion charger. Also, it's lighter and slimer that you can easily carry it around, even on airplanes.
  • 【Small & Slim】It feels incredibly compact for a 10000mAh power bank, weighing just 218g and only 14mm thick. Grippy design is easy to hold, easy to toss into a bag and incredibly portable.
  • 【What You Get】2 * Miady 10000mAh USB Portable Charger (White & Black); 2 * USB Cable; 1 * User Manual. We provide 24*7 friendly customer support and also back our products for 18 months. Please feel free to contact us.
Bestseller No. 4
Portable Charger Power Bank 25800mAh, Ultra-High Capacity Fast Phone Charging with Newest Intelligent Controlling IC, 2 USB Ports External Cell Phone Battery Pack for iPhone,Samsung Android,Table etc
1,793 Reviews
Portable Charger Power Bank 25800mAh, Ultra-High Capacity Fast Phone Charging with Newest Intelligent Controlling IC, 2 USB Ports External Cell Phone Battery Pack for iPhone,Samsung Android,Table etc
  • 2019 latest design portable charger with 25800mAh ultra-huge capacity adopts our advanced intelligent controlling IC higher quality safer and more reliable powerful and longer-lasting life after 100% checked and continuous aging Test
  • Universal compatibility -- the power bank supports iPhone iPad iWatch AirPods Samsung Galaxy most other smart cell phones tablets Bluetooth devices and more It can charge 6 to 8 times to eliminate the anxiety of your battery exhaustion Suit for travel and Other indoor outdoor activities
  • Dual USB charging & Fast recharge -- the dual USB ports (2 1A+1a) to charge your two devices simultaneously fully recharges itself in 8 12 hours with 2 1a Input charger or 12-24 hours with 1a charger
  • 4 LED Lights & Certified Safe -- Four led lights show the current remaining power of the item(25% 50% 75% 100%) easily press the power button to turn it on or off Built-in smart protection system the USB battery pack ensures complete protection for you
  • 24 Months -- Ekrist 25800mAh portable battery charger Micro USB cables user manuals Together with 45 days money back 2 years and friendly easy-to-reach support!
Bestseller No. 5
Solar Chargers 30,000mAh, Dualpow Portable Dual USB Solar Battery Charger External Battery Pack Phone Charger Power Bank with Flashlight for Smartphones Tablet Camera (Baby Blue)
  • Two charging options: (MAIN CHARGE) you can use the included micro USB cable and plug it in to your wall plug or (EMERGENCY) you can put the charger in direct sunlight to charge
  • High Capacity: built-in 30000mAh battery, this charger is a great choice for camping trips or other outdoor activities where outlets are scarce
  • Dual USB output charging ports and Charge Fast: allow you to charge 2 digital devices simultaneously, also, it charges your phone very fast with the 2.1 usb port
  • Two extra cool features: a flashlight and a hook, on the back there is a flashlight (Great to have in a pinch!), with a power button on the side (double click the power button to turn the led light on, then double click again to turn the light off). With an included hook, you can hang the charger from a backpack
  • Due to sunlight intensity and solar panel conversion rate, it may take a LONG TIME to fully charge the power bank . We suggest you fully recharge it VIA OUTLET


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Choose a Power Bank for Your Phone

Staying in touch with friends, family or work at home is a must for many globetrotters. Technology allows us to keep our loved ones connected to our journeys and we can share thrilling moments as they happen, thanks to smartphones and tablets. Since a smartphone or tablet is only as good as its battery life in many remote locations, where power outlets aren’t readily available for a quick charge, consider learning how to choose a power bank for your phone.

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