Why do we need a Power bank?

Power bank is designed as one portable charger for establishing that mobile phones and other digital devices can be charged at any time or standby power supply. Generally consists of lithium batteries or dry batteries as a power storage unit. Distinguished from the battery inside the product configuration, it also called external battery pack. Generally equipped with a variety of power adapter, usually has a large capacity, multi-purpose, small size, long life, safety and reliability features.It is available anytime, anywhere for mobile phones, digital cameras, MP3, MP4, PDA, handheld computers, handheld game consoles, etc. It is for a variety of digital products charging function or some standby power products.Power bank depends primarily on the quality of batteries cells and protection board these two parts. High quality power bank batteries cells are the basis for its life. The life of normal lithium polymer batteries are longer than 18650 cylindrical lithium batteries, and security risks are relatively low, the former generally can be used for two or three years. Good protection board can boost up the transfer rate up to 90% or more, commonly between the 80 to 85%, only 70% will be considered as the poor and down ones. Less than 80% transfer rate would mean a larger loss occurs in the power cable, The heat of batteries cells are also high.

Power bank first appeared in 2001's CES show, then just a sand booth at CES to spread like a museum exhibition throne, was a student built with a few AA batteries combined with a control circuit and then pieced together. However, this humble thing gained many exhibitors attention, because it can be anywhere charging for digital products. After being spies, people found that many producers follow the trend, and make this great new product to be a hottest trend. The concept of power bank grew with the popularity of digital products in 2012. The core definition is  convenient and easy to carry large-capacity portable power power to keep all digital devices juiced anywhere. From 2012 upwards increasingly diverse functions of digital products, more frequent usages. Therefore, how to improve the using experience of digital products is the time to play its most important function to be highlighted as the most important issue. Power bank what to solve this problem is the best solution. To having a stable power supply, you can freely move to anywhere in the state to without worrying the variety of digital products are out of battery.