Wednesday, April 10, 2013

Precautions for External Battery Purchase

Definition of external battery

The external battery is a synonym of the external-built battery, also called external battery supply, e power, which usually refers to a device providing energy for phone power storage. The role of usb external backup battery: to provide charging function for mobile phones, digital products at anytime and anywhere.

Main function:

1. Dual USB output interface, can simultaneously charge two mobile phones or digital equipment;
2. 3000mAh high-capacity lithium polymer batteries, equivalent to 5-6 blocks of cell phone batteries, 30 days standby for your mobile phone;
3. Durable, charge and discharge cycles ≥ 500 times;
4. Intelligent control, microcomputer intelligent monitoring and display power;
5. Single key shuttle, a key can realize operation of all functions;
6. Auto-sleep, automatic sleep mode in non-working state, to prevent power loss; 7. Multifunctional, can apply to iPad / iPhone, mobile phone, MP3, MP4, GPS and other digital products;
8. Plug and Play; using USB port for power supply output, plug the cable can realize charge at any time.

1. Built-in lithium-ion battery capacity up to 3000mAh
2. Metal body is fine and fashion
3. Can charge two mobile phones or digital devices at the same time.
4. It has battery indicator.

External Battery

External battery is used for charging our mobile phones and other digital products, we cannot joke for their security and our own security. So we need to carefully choose the external battery.

Transfer efficiency

This is what a lot of people are tangled when buy safe external battery, some people have to buy the external battery with high conversion efficiency, and there is also a lot of testing of external battery on the Internet, but in fact, external battery conversion efficiency is not decided by mobile phone external battery charging, which is also associated with the mobile phone or other digital products charging efficiency. How to understand your own mobile phone or digital products charging efficiency? I have a simple method, charge when mobile phone or digital products are turned off, take a look at the amount of heat during charging, if hot, then their conversion efficiency is very low, on the contrary, they have good conversion efficiency.


This is the other most important what we care about external battery, it is generally at least two to three times larger than the battery of the mobile phone or digital products, and can charge two to three times, which brings a lot of convenience than using a spare battery. But we have to understand our own external battery capacity requirements, cannot blindly pursue for large-capacity external battery, which can cause unnecessary waste. The normal external battery capacity of about 5000mA is enough for our daily use.

Guangzhou Sunwith Co., LTD. established in 2005, is the subsidiary company of Global Vision Group (HK) limited. We are a professional and famous power bank manufacturer and exporter in China. At present, our product line has been expanded from the battery charger to mobile phone cases and accessories which are suitable for iPhone, iPods, iPad, smart phones, digital tablets and other portable devices.
For more information about power bank charger visit our website.

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