What is Power Bank?

By January 13, 2016


What is Power bank? Power bank also called “mobile battery”, “external battery”, “spare battery”, “digital charging companion”, and “charging stick”. It also has a very personal name: “mobile phone lover”. “Power bank” concept has been developed along with the rapid growth and popularization of digital products, and its definition is: portable power supply which is easy to carry with large capacity.


In the light of the growing diversity of digital products features, more frequent usage, as well as closer and closer work association with our daily life, the problems how to increase the use time of digital products and electronic products, how to facilitate human living, how to add power supply, and how to play its full role have no time to delay. Power bank, is the best solution designed to address these problems. Carrying a mobile power can achieve outside charging for a variety of digital products anytime, anywhere.


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Power banks quality depend largely on the quality of both batteries and protection board. High quality battery cells are the basis of mobile power life. The normal lithium polymer batteries have a longer life expectancy than 18,650 cylindrical lithium ion batteries, and their security risk is relatively low. The former one normally can be used for two or three years. Mobile power bank circuit board can be treated as a control system, which is mainly responsible for power distribution and transformation. It converts the voltage provided by lithium batteries into the standard voltage to provide electricity for charging device. Good Protection board has a conversion rate of up to 90%, while a general one has 80 ~ 85% and a bad one has only 70%. It the conversion rate is less than 80%, it means that the power bank suffers large line loss, and the battery cell itself suffers large calorific value.


What is Power bank?

Power Bank is called mobile power pack for short, also called “mobile battery”, “external battery”, “spare battery”, and “travel charger”. There are many capacity power bank like, EasyAcc 10000mAhAnker 10050mAh, Aukey 5000mAh, Lumsing 6700mAh, Jackery 3200 mAh and Ravpower external battery 7800mAh, etc. There are also occur some Smart power bank and Quick Charge power bank in the market now.

Quick-charge-Power-Bank Quick-Charge-Power-Bank-01 Smart-Power-Bank Smart-Power-Bank-01


Power bank first appeared in 2001 on the CES Exhibition. At that time there was just a small booth at the CES Sand Museum. An oversea student pieced several AA batteries together with a control circuit. This small thing, because it can charge the digital products in no place, attracted the attention of many exhibitors. After found by the spies, many businessmen followed suit. It seemed like they would big play this new products. Mobile power concept was developed as the 2012 rapid growth and development of digital products. From 2012, digital products features have become more and more various and have been used more frequently. So how to improve digital products use of time, and how to play their full role are important. Having a power bank, people can charge various types digital products whenever and wherever possible.


Video about “What is power bank”


If you knew what is power bank and plan to buy now, Here are some tips that would help you: 


First and foremost, you need to know about the battery size and the charger specifications of your smartphone and you will find it printed on the battery and the charger or on the box in which your cellphone’s packed. 

Then, the power bank brought should at least have the same size as your smartphones’ battery, which could ensure that your battery gets fully charged at least once. More frequently your smartphones run out of power, higher mAh that power banks could store for more charges. 

The third, point you should notice is that the output voltage of the power bank should be equal to or higher than that of your device. Fourthly, how many devices you take along, how many ports and cables that the power bank should come with, letting you charge more than one device at a time. 

Lastly,  point is that you should choose a power bank featuring a power-cut power when coming with a short circuit and overcharged. We would suggest you to choose one from a trusted seller, or a branded one. Do avoid being fooled by tall claims and regretting later.  


How to Buy Power Bank?

How to buy a Buying External Battery? Many people are possibly troubled with a problem that although there has been a big rise in smart phone’s configuration, the technology in battery has remained stagnant. But fortunately, the development of external battery can help with our problems to a large extent. When travelling, tourists with a portable external battery charger can recharge their phones or other portable electronics at any time or any place. Gradually, external battery has become a very important accessory, and the products with varied promotions in the market have also been various. Then in the bombing of information, how can customers keep a clear mind in buying their ideal external batteries?

>>More Tips About “How to buy  Power Bank


If you have bought a power bank, Here are some tips for you to maintain power bank: 

First–Use power bank regularly: Do not leave it unused for a long period. If the power bank for long periods of time to be used, from time to time perform a single charge and discharge to maintain their normal performance. Best time to discharge and charge per month of power bank, so you can ensure that the internal batteries to maintain the best condition, and effectively extend its service life.
Then–Use power bank suitably: Do not try to use until fully charged and not over-depletion of the battery. It is advocated that do not interrupt charging when the charge has not been completed, as this also sacrificed its life. Do not over-depletion of the battery, do not use to completely discharge, then it will cause some irreversible loss.
Lastly–Use in the right temperature and humidity: We may all have this experience, when you open your TV in wet days, the screen is a little blurry and the colors will be distorted, and which is exactly the impact of humidity for appliances. Mobile power is no exception. As electronic products, careless water or prolonged exposure to moist air will cause varying degrees of corrosion or oxidation of its internal electronic components. Therefore, power bank must be stored in a dry, cool place.


How to Maintain Power Bank?

Power Banks has brought a great convenience for people. More and more people are using power banks to charge their digital devices. Maintaining your power bank can ensure that it works properly and last lasts longer. However, many people don’t know how to maintain their power banks. Here, we list some methods for your power bank maintenance.

>>More Tips About “How to Maintain Power Bank


>>>Topics: Tell me when you begin to know power bank and what is your first power bank?



Several Types of Power Bank

A Brief History of Power Bank

Read This Before You Buy A Power Bank


Tips: If you have something to add to this Article please share and make a comments. I will send A Latest EasyAcc Power Bank As a Gifts Once your Content Added.

Comments (117)




  1. i have xiaomi 20000mah 2C power bank and its quality is amazing


  3. useful information

  4. Wow! I’m lucky enough that I had one given to me – totally awesome! Because the last thing you want to happen is to run out of power when you need it the most!

  5. A power bank is almost a necessity these days.

  6. Lerned about power banks a few years ago. Last year i finnaly got my first as a gift from a friend. a 10.400.

  7. Thanks, very helpful!

  8. nice

  9. Known of their existence when I saw in local stores where I live.
    They really were obsolete compared to what we have available now with really huge capacities.
    It would be magnificent to charge all my devices since I have a lot of them that could use a powerbank to charge them.

  10. very interesting

  11. good to know

  12. Wow! This is pretty awesome! I’ve never head of Power Bank until now, but I’d really love to try it out.

  13. v nice

  14. I knew about it like 5 years ago, when those things were bad, It only allows you to charge just a little the lifetime was about months and a 5000mA/h was twice of the size of my phone, horrible hahaha

  15. these would be great to have

  16. Thanks for those good advice

  17. Great article on these Power Banks. I’ve owned a generic brand for a couple of years now but thinking I should grab one of these!

  18. I started to know them (I think) in 2013 when I bought a new smartphone. The first was a powerbank Innori

  19. interesting

  20. I know about them for a few years! But I never bought one.

  21. Useful information. Thanks

  22. I found the article to be rather general but really got some insight from the tips. Really well done.

  23. I really need a power bank especially when I go traveling!

  24. It wasn’t until I entered this contest that I learned about Power Bank. I have never owned a Power Bank before but I would love to try one.

  25. What a great way to carry the extra power you need.

  26. these would be great to have

  27. Sick products

  28. don’t remember when I first learned about them, I have a few though and not sure of the brands, one is all wood and looks cool

  29. I’m forgetful sometimes and don’t charge my phone. So this would be very useful

  30. Slim power supply I love 🙂

  31. Great article

  32. A large capacity power bank would come in handy, especially when my son forgets to plug in his phone or just drains the battery by playing videos.

  33. Looks awesome!!

  34. I would like this

  35. I first learned of power bank within the last year. I currently don’t own a power bank.

  36. That a very handy product to own. I will have to get me one.

  37. These are great when travelling. There are more charging opportunities in airports now but these are still handy.

  38. Looks really great 😀 thank you

  39. useful data this

  40. i know about power bank in june 2014 and my first poewrbanka are of samsung

  41. Thanks, It really useful. Where i can buy the best power banks..

  42. Looks like a great product! If I don’t win one, I’ll buy one…

  43. Power banks have saved me many times! So useful in a wide variety of situations!

  44. Very nice

  45. I just recently learned of power banks from Facebook friends. I will be checking more into them. They sound perfect for travelling!

  46. could really do with a powerbank

  47. My best powerbank is the Anker Astro ei as of the extremely high output and high capacity for the size at 5200mah

    And my second best is the easyacc Classic 10000 as o have had it for around 2 years and still get a good charge of around 8520mah and a output of 1.7amp

    This is just 2 of my 75 powerbanks

  48. I really need a power bank especially when I go camping!

  49. genial

  50. I never had one.

  51. Sadly I don’t have one.

  52. Very informative. I did not know about battery banks until today.

  53. I was bought one of these power banks as a present they are fantastic!

  54. I’ve never had one of these. I’ve only seen them in passing but have many times thought I need to get my husband and daughter one. She goes to college and I would like for her to have this in case something ever happened at the school or she got stranded somewhere. My husband works in the oilfield and a lot of places get bad reception which is a big drain on batteries so this would be good for him to have in case of emergency as well.

  55. products look amazing. would love one

  56. I have only become aware of power banks in the past 12 monthes or so, we have one in our house belonging to my son now but I really need one of my own

  57. I never heard of the power banks before today, but it is something I would love to use! Thanks for the info!

  58. I think that I need to invest in a power bank.

  59. ooooops guys… i put my email instead of my name…. can you fix for me?

  60. I love powerbanks. they are so useful. I’ve taken them on long trips to europe, road trips across america and plan to use my new one from ACC camping this summer.

  61. I became aware of powerbanks in 2014, when I won my only one, a small, black cube, in a giveaway. Although easily carried, it lacks the power for a full phone charge; it’s strictly for an emergency boost.

  62. I love the small one I have, but really need this bigger one!

  63. This would surely be an item that’ll make the list this holiday season…. They have some of the greatest of items and might suggest a gift card for a gift to those in the family!

    [email protected]

  64. convenient when travelling

  65. So ridiculously useful! Why don’t I own one!!!!

  66. I love it

  67. Why have I never heard about these before, what a great idea, I get sooo cross at my iPhone for always dying on me when I least expect it!! I need in my life!!

  68. Very clever!

  69. i used to have a Diamond Multimedia power but these one look better

  70. very classy especially the one with the apple shape 🙂

  71. Powerbanks are a great idea, nothing worse than getting caught short with no battery

  72. It sounds brilliant

  73. Very interesting

  74. I love this kind of technological elements when you go travel. Practical and very discreet.

  75. What a fab gadget!

  76. External battery.

  77. Thanks, this is a great explanation about power banks

  78. Nice energizing !!!

  79. It’s purse size and a charmer, especially when your phone is about to stall out.

  80. Newer smartphones are coming with large batteries, however battery banks are still needed by most older generation and entry level smartphones

  81. I first thought about power banks when I needed some extra battery-life for my smartphone, so I looked for info about this external batteries .
    Once I tried one I fell in love, it can charge your phone wherever you need. My first power bank was Xiaomi´s one.

  82. I found out three years ago and my first bank energy was one rectangular

  83. I’ve wanted a power bank for a while (I started hearing about them a few years ago) but I still don’t have one.

  84. I am just now learning. I don’t currently have one

  85. Very good info, thanks

  86. Nice peoducts

  87. I’d love to try this.

  88. a great invention

  89. great advice. now i need to buy these absolute life savers. i can now roam away from a wall plug 🙂

  90. I have been seeing them several years but I have not purchased one yet.

  91. Thanks for the info very helpful.

  92. This speaker have an exellent sound

  93. Maybe pink fluorescent

  94. this is really useful, i didnt know about it but

  95. Que bien están shulos

  96. Buenos Productos :3

  97. Good

  98. I lides the products

  99. Would love to try a power bank to extend my phone’s battery life!

  100. Nice giveaway

  101. ive never heard of this uptill now, sounds great. i could definitely use one of these for sure

  102. alway buy from great sellers like easy acc to have always a good battery

  103. Years ago when they where $100+, Bulky, and Low Capacity. First power bank was a Diamond Multimedia that had 1800 mAh Capacity and 5v-500mA Output..

  104. Awesome

  105. I’ve had a powerbank since 2013 and had known about them for quite a time before that. The first one I got was a 15000MaH model when the price dropped, fortunately they are a lot more affordable now and I have 5 of varying capacity 😀

  106. Thanks, It really useful.

  107. This power bank seems to be a very interesting item, I had no idea what it was until I read the article above.

  108. I first learned of power banks a few years ago. My first one was one of the cylindrical ones.

  109. allen

    Thanks, It really useful. Where i can buy the best power banks?