Mobile Power Bank, also called Mobile Power Pack, External Battery Charger or Portable Battery Backup, is a portable charger with both power supplying and charging functions for mobile phone, e-Readers, MP3, PDA and other small devices. In recent years digital devices’ sale volume has been skyrocketing while the development of battery technology for digital devices is not a compliment.
Take smart phones for example, mobile internet connection brings blowout-breakout for smart terminals. As 3G is getting increasingly mature and 4G time is around the corner, and the LED screen is getting larger and larger so that they are more electricity-consuming than the old ones, in the mean time, the lack of innovation of mobile batteries as well as the hardware wars brought by Android, all of the above make the smart phones can only work for one day long. People want to make their digital devices be charged at anywhere and anytime. Therefore, the portable charger market comes.
In 2013, the charger market increased massively in both output and sale volume along with customer demands. More and more electric products pop up in the market. Finding a power bank to convert DC power to AC seems to be a simple task, but when you start shopping you will soon find that there are so many choices. The dazzling types make consumers wonder: How can I choose a proper mobile power bank? This why I write this paper,here is some tips of buying the power bank!
Basically, there are seven factors that should be taken into consideration before you choose a power bank for your digital device: Capacity, Security, Compatibility, Portability, Brand, Additional function and Price.
Capacity. The higher the capacity, the better? No! The capacity is one of the most important parameters which influence the charge times after a fully charging to the power bank, but what you should you know is that the capacity is proportional to its size. The higher the capacity, the larger the size. It usually has 5 to 6 battery cells inside when the capacity is above 10,000mAh, just like a piece of brick. There’s no need to bring a “stick” around if you do not go outside frequently. Besides, the false labeling capacity phenomenon is still serious nowadays. Some dishonest manufactures deceive consumers with modified capacity but in fact the true capacity is much lower than it marked. Therefore, some high capacity MPP are not credulous.
Security. There are two aspects about security: charging equipments security such as mobile phone, mp3 and iPod, etc, and personal security. How to ensure security? On one hand, this can be achieved by protecting circuit such as over-current, overcharge, over discharge, short circuit as well as temperature protection set on PCB Assembly. When some unexpected situation happens, these protection circuits will intervene automatically to cut off the circuit; on the other hand, security can be pursued by applying high-qualified battery and secure battery types. Generally speaking, common polymer batteries are safer than 18650 lithium batteries for customers. Batteries from market-leading-manufacturers are more ensured than cottage ones. The charger price varies greatly, many specially-low-price chargers are made of defective electric goods and it may cause danger if you choose those ones.
Compatibility. You may have an iPhone while your brother have an Android phone. You may also want to charge your Kindle and MP3 using one power bank. The best choice is to buy a power bank with multiple USB interfaces and charging adapters so that it can be compatible with most of your digital devices.
Portability. Modern society makes people have a higher requirements for convenience and portability. Power bank is just one of the “spokesmen” of technical innovation of portability. An appropriate power bank should be the size and weight you can carry with great convenience.
Brand. As we say before, inferior power bank may cause danger to both you and your devices. Usually well-known brands have high quality products and perfect after-sale service. Here I’ll suggest some well-known brands of power bank on Amozon.com: Chromo Inc, PowerGen, Anker, Photive, Elivebuy®, Disney, Yubi Power, eFreesia, Meco, Poweradd™, Tenergy, Tekkeon, Kocaso, Brookstone, DODOCOO.
Additional function. Though the main function of a power bank is to charge power, some additional features can bring us benefits as well. For example, multiple charging adapters can help extend the range of use, double interfaces can recharge two devices at the same time, a LED light can be used in an emergency, and so forth. You can choose power bank with additional functions through your own needs.
Price. You may think the more expensive,the power bank is more qualified. This is not entirely accurate. The price range from dozens of yuan to hundreds even thousands of yuan. Actually the cost of a power bank, mainly including battery cell, PCB and the shell, is not that high. Here is a reference about the price: 1000mAh, for example, a power bank with 18650 battery cells usually ranges from 100 yuan to 130yuan, while with polymer cells usually ranges between 150 yuan and 200 yuan.