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?

Back to Top of How to Choose a Power Bank for Your Phone


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

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
37,973 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

Bestseller 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

Bestseller 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.
  • 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
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. 3
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.
  • ✅ 【High-speed Charging】Outpace your mates and charge 1.4x faster through our exclusive UPower+ technology. After intelligently identifying your devices, it auto-adjusts the output up to 3A.
  • ✅ 【Ultra Slim】The thinnest 10000mAh power bank on the market, easily slips it into any of your pockets or bags.
  • ✅ 【Dynamic Design】While your hand enjoys the device's sleek feel, your eyes will love the one-of-a-kind illuminated paw indicator.
  • ✅ 【Handy Flashlight】Simply click the power button twice to turn on/off it. Helpful for reading camping blackout or emergency.
SaleBestseller No. 4
GETIHU Portable Charger, LED Display 10000mAh Power Bank, 4.8A 2 USB Ports High-Speed Battery Pack with Flashlight for iPhone 11 Pro X 8 7 6S Plus Samsung Galaxy S20 S10 Note 10 Google LG Oneplus iPad
8,426 Reviews
GETIHU Portable Charger, LED Display 10000mAh Power Bank, 4.8A 2 USB Ports High-Speed Battery Pack with Flashlight for iPhone 11 Pro X 8 7 6S Plus Samsung Galaxy S20 S10 Note 10 Google LG Oneplus iPad
  • GETIHU’s Value: GETIHU is a R&D manufacturer with 11 years of experience. Providing gadgets with reassuring quality at unbeatable price is our biggest advantage and always be our #1 priority.
  • ✅【100% Safe】UL-2056 Certified Li-on Battery combines Dual Protect Chips to make a reassuring airline approved portable charger.
  • ✅【Intelligent LED Display】Always know how much battery is left with the clear digital display by simply pressing the power button. No more Guessing.
  • ✅【High-speed Charging】Featuring exclusive smart IC to auto fit your devices’ charging rate and optimize the charging efficiency, you can power up two devices together at a blazing-fast speed up to 4.8A.
  • ✅【Even Wider Compatibility】Unlike most power banks on the market incapable of charging low-power accessories, GETIHU 10000 can work with not only all the smart phones but smaller devices like your AirPods, Bluetooth headphone, Bluetooth speaker, sport wristbands, smart watch, etc.
SaleBestseller No. 5
Anker Power Bank, PowerCore Slim 10000, Ultra Slim Portable Charger, Compact 10000mAh External Battery, High-Speed PowerIQ Charging Technology for iPhone, Samsung Galaxy and More (USB-C Input Only)
  • Slim Size, Big Power: One of the slimmest and lightest 10000 mAh portable chargers on the market. Provides 2.6 charges for iPhone XS, 2.4 full charges for Galaxy S10 and 1.3 charges for iPad mini 5.
  • Versatile Charging: Anker's exclusive PowerIQ and VoltageBoost technology combine to deliver the fastest possible charge for any device, while the trickle-charging mode is the best way to charge low-power devices.
  • Certified Safe: MultiProtect is Anker’s 11-point safety system, providing superior protection for you and your devices.
  • Quality Throughout: With a sleek matte exterior and cool-blue LED light to report battery level, PowerCore Slim 10000 is premium both inside and out.
  • What You Get: PowerCore Slim 10000 portable charger, Micro USB cable (USB-C cable and Lightning cable not included), travel pouch, welcome guide, our worry-free 18-month warranty, and friendly customer service.


Back to Top of How to Choose a Power Bank for Your Phone


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.

Back to Top of How to Choose a Power Bank for Your Phone


Cell Phone & Charger Guides

Cell Phone & Charger Guides


Home / How to Choose a Power Bank for Your Phone


 
Tech4Trek Comments
Follow Us


Learn How I Make Over $10K Per Month Publishing Websites

Long before the words Blogger, SEO, Wordpress or Digital Nomad even existed, I created websites that surpassed my six-figure income within one year and allowed me to work from home. Today, I am fully location independent, do work I LOVE and have total control over my schedule. Has entrepreneurship had it's ups and downs? Absolutely, and you can learn everything I know about how to build a sustainable business online, publishing websites about travel, your hometown, fitness, health and so many other niches. Learn all about How to Make Money Blogging, including how to know if it's the right career for you and how to quick launch your business.

I'll even show you how you can start totally free and not worry at all about which host, what domain name, a logo and all the other none sense most people waste their early time on that is frustrating and earns you zero income. You'll learn much of my SEO "secret sauce," completely legitimate tactics no one else is using. The course is being developed now, so sign up today (no spam, I promise) and be the first to know when I launch it at a special discounted rate.


Tech4Trek Discounts for Digital Nomads and Travelers

  • Note: If you join Google Fi through this link: Google Fi, we each receive $20 Fi credit.
  • ExpressVPN - use this link to sign up and we each get 30 days free!
  • Charles Schwab - pay NO fees for ATM withdrawals anywhere in the world and get reimbursed for those charged at machines. Use this link and you may get $100 when you become a Schwab client (** I don't know exactly how it works).
  • Chase Sappire Preferred Card - pay no foreign transaction fees, get 60,000 bonus points (about $750)
  • AirBnb - if you're new to AirBnb (is that even possible?), get $40 in travel credit on your first trip.