How to choose power bank for your phone and tablet?

How to Choose Power Bank

The Ultimate Buying Guide to Mobile Power Bank Designed for Use on the Go. 

Power Bank comes with different names, battery packs, portable chargers, fuel banks, pocket power cells and back-up charging devices to name just few. But whatever you call them, they all do the same thing: CHARGE YOUR PHONE OR TABLET WITHOUT NEEDING A POWER OUTLET.

Power Bank, comes in all shapes and sizes, smaller sizes for an essential smartphone boost in your pocket, or bigger sizes for multiple charges or to charge a tablet. 

Meanwhile, you’ll notice some power banks with cables included, or some with multiple ports to charge more than one device at a time. 

How to Choose Power Bank for Smartphone and Tablet

Q1: Why to choose power bank for your phone and tablet?

Mobile Devices like smartphones and tablets make life so much easier. That is , until they run our of battery power when there’s nowhere to plug in. Most Popular Emojis

Power Bank in Daily Life

Q2: What you will benefit while choosing a perfect power bank for your phone?

Well, a lightweight power bank you can carry anywhere. Simply charge it up at home, throw it in your bag or your pocket, and connect it to your phone whenever it needs a quick battery boost. You’ll never suffer from “low battery anxiety” again. Most Popular Emojis 

Portable Power Bank to Charge Up My Phone

Q3: How to choose power bank for your phone/tablet?

How to choose power bank for your phone and tablet? Surely, it could be easy for you as you could just follow these tips below one by one; while it would be a little hard as you have to read and check the tips carefully, covering up to eight aspects in total, the size/capacity of power bank, power output, number of USB ports, cables included, power input, safety, quality and certification. 

How to Choose Power Bank

Let’s start by choosing the size of your power bank.

This is not about which one will fit in your pocket or your purse. The size of the battery is about the power inside. Most power banks will feature a number on the front that tells you the number of mAh or “milliamp-hour”.

Common sizes range from 2,000mAh up to 10,000mAh or even 26,000mAh. Bigger numbers mean more power and more recharges for your smartphone, or charging for bigger devices that need more power, like a tablet. 

We’ve used smartphones and tablets to compare battery sizes, but most power banks will charge any device that charges via USB, such as a GoPro camera, Kindle reader or Bluetooth headset. Bigger devices that draw more power will need bigger batteries – more mAh – to charge them fully.

How to Choose mAh for Power Bank

Then, we should consider POWER OUTPUT, a key point that’s to ensure fast charging for your phone/tablet. 

Technically the standard USB port on your power bank will fit any standard USB cable. However, the amount of power it can provide may vary. 

Question: How many times can a Power Bank 20,000mAh fully charge your phone?

Power Bank Charging Speed

Thirdly, it falls on NUMBER OF USB PORTS, a mattter of how many devices you need to charge.

Generally, bigger batteries with more mAh, sometimes have more than one USB port. If so, that can be useful to charge two smartphones at the same time – maybe to give a battery boost to a friend. 

Or you can charge your smartphone and your GoPro at the same time.

Or your smartphone and your Bluetooth headset.

Or even a smartphone and a tablet, if you choose a battery with enough mAh to provide all that power.

With multiple ports, simultaneous charging is super-easy.

Power Bank for Mobile

Fourth: your power bank will come with a cable.

A cable to charge the battery: YES

Every power bank should come with one cable (usually a standrad USB to Micro-USB cable) to charge the power bank itself, which you use to connect the power bank input port (usually Micro-USB) to a standard USB wall charger.

A cable to charge your phone/tablet: MAYBE

If your phone or tablet connects via Micro-USB, you can use the supplied cable to charge it.

If your phone or tablet connects via a Lightning or USB-C connector, you will need to use an additional cable to charge it. Some power banks come with multiple cables and you could check the packaging to see what’s included.

Some power banks provide cables that are detachable, which makes it easy to switch between cables for your iPad, your Samsung phone, your Kindle or another device. 

Some have cables that’re hard-wired to the battery that they cannot be detached, making them easier to find in a low battery emergency, but may make them less versatile overall.

Some even have clever storage solution: a detachable cable you can switch out for other cable, plus a way to keep the cable close so it’s always close at hand. 

Mophie Power Bank Take Along A Power Bank While Travelling 

 Fifthly, it’s about charging the power bank itself. 

Unfortunately, no power bank has been invented that magically recharges itself when it’s empty. But on the whole, they are pretty simple to charge: plug the supplied cable into the input port on the power bank and a standard USB on the other end into a wall charger or other power source. 

Power Bank input ranges from 1Amp up to 3Amps(short for ampere and it’s a unit of current) or even higher with type-c input. Put simply, the bigger the input number, the faster it will recharge.

Some power banks have an LED indicator, which tells you how much power the power bank has left and on the other side will tell you when you need to recharge the battery. 

How to Charge Up Power Bank 20000mAh

What’s more? Here’s something about how to choose a safe power bank.

It’s easy to avoid counterfeit and dangerous ones by following these simple steps:

Register Your Device   some power banks require you to register your purchase, by providing the serial number either online or via a helpline. This is a good way to activate your returns policy and to ensure your product is not a counterfeit. 

Check the Warranty   manufacturer, country of origin and the type of battery may mean differences in the type or duration of the warranty. If you are unsure, check the small print on the package or the instructions provided. 

Power Bank Recreational Life

Something else? Surely. The Importance of Quality.

Safe power banks should have undergone the following testing.

Efficiency   more efficient power bank is, a lower operating temperature it will have, which wastes less energy for a longer life expectancy.

Over Current Protection   it prevents too much power going into the battery pack and the power going out to the connected equipment, protecting the delicate circuitry of both devices. 

Over Voltage Protection   it protects both the power bank and the connected device by keeping the voltage within recommended safety parameters to avoid damage. 

Over Discharge/Charge Protection   some power banks consistently monitor charge states to prevent this from happening.

Heat Tests at Extreme Temperatures   While using batteries in extreme temperatures isn’t advised anywhere. 

How to Choose Power Bank

Last but least, it’s CERTIFICATION.

These logos or marks, usually found on the packaging, will indicate that they have passed the necessary industry standard regulations, to comply with and achieve the following certifications.

Power Bank Certification for Safety

So, have you got a clear idea about how to choose power bank for your phone and tablet while reading through the passage? Here are some recommendations for you, 20000 mAh is a quite large capacity, however, since the battery drains faster and battery capacity of most electronic devices are bigger, 20000 mAh power banks are cost-effective and future-proof.

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1: EasyAcc 20000mAh Portable Charger


  • 20000mAh High Capacity: Charge an iPhone 7 6 times, a Samsung S8 more than 4 times or an iPad Mini 3 2 times.
  • Life Saver: Unique 4A Dual ports input (charger adapter not included), can be superfast recharged in 6 hours, reduce the recharging time up to 50% than usual 20000mah battery.
  • Highest Output: 4.8A Output with 4 USB Ports. Auto detects and changes its charging speed unique to your device for high charging speed up to 2.4A (2 times faster than a computer USB port). Charging 4 devices simultaneously.
  • Safety Protection: Effectively prevents your devices from overcharge, overcurrent and short circuits as well as conform to CE, RoHS, and FCC.
  • Just One Enough On-the-Go. The Top Rated Power Bank. Outstanding customer service provides 18 months warranty.

2: Anker 20100mAh Portable Charger PowerCore 20100


  • The Anker Advantage: Join the 10 million+ powered by our leading technology.
  • Ultra-High Capacity: Weighs as little as a can of soup (12.5 oz) yet charges the iPhone 7 almost seven times, the Galaxy S6 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 ensures 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. Lightning cable for iPhone / iPad sold separately.

3.USB C Power Bank RAVPower 20100 Portable Charger with QC 3.0


  • Quick Charge 3.0 Input & Output: 75% faster technology, charge compatible smartphones from 0 to 80% in only 35 minutes; QC3.0 input allows for speedy recharging of the battery charger
  • Type-C Input & Output: Power bank recharges up to 5V/3A; compatible with Nintendo Switch, 12-inch MacBook, Google Pixel 2, Samsung Galaxy S8 / S8 Plus, Huawei Mate 10 Pro
  • Bigger Capacity and Faster Recharge: 20100mAh charges the Nintendo Switch 2.5 times, iPhone X 4.4 times; fully recharge the power bank in just 4.5 hours (QC3.0 charger) or 10.5 hours (5V/2A charger)

Please feel free to comment below if you still have some questions or concerns on choosing a right power bank for your mobile devices. 

How to choose power bank for your phone and tablet?》有110个想法

  1. I have a Vivo V5S android mobile device,please can you suggest me which power bank will be suitable for it and can I charge my power bank simultaneously when charging my mobile through power bank

    1. Most of the latest power banks features pass-through charging capability, I recommend a portable 10000 mAh power bank for daily use of your phone.

  2. I have lenovo k3 note model mobile. please can you suggest me which power bank will be suitable for it and can I charge my power bank simultaneously when charging my mobile through power bank

    1. Hi Harika, your Lenovo K3 note sports a removable Li-Ion 3000 mAh battery, to cover a daily use, I would suggest you to get a portable 10000mAh power bank, which can provide 2.5 cycles recharge. I recommend you the EasyAcc slim 10000mAh power bank, it’s able to satisfy your request about pass-through charging.

    1. The iPhone 7 Plus features a battery of 2900 mAh, so you’d better to get a power bank more than 7000 mAh to achieve at least 2 recharge cycles. I recommend a portable slim 10000 mAh power bank for you, you can charge other compatible devices simultaneously along with you iPhone 7.


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