About Power Banks

Nowadays mobile phone is very popular in our daily life, and at the same time, the power bank is also very common. Anyone who uses a mobile phone knows the importance of carrying a backup power bank. Do you know how the power bank works? So following we will introduce 5 facts you didn't know about power bank.

1. What does the power bank capactity tell us?

Power Banks come in different sizes and the mAh figure tells us the total capacity of the batteries. In other words, the more mAh the Power Bank has, the larger the energy is. To give an example, iPhone 6 Plus has a battery capacity of 2915mAh so if you want to have it fully charged, you should have a Power Bank with more mAh than your phone’s capacity.

2. Do all power banks charge laptops?

No, not all Power Banks can charge laptops. This is because most of the Power Banks in the market only have 5V USB output and for charging laptops, the power bank would need to have a higher voltage output 16V to 20V depending on your Laptop specifications (check your AC adapter to obtain the voltage required). Please also note that only few Power Banks in the market provide this. 

3. Why some power banks take many hours in order to charge?

Many Power Banks can only be recharged with USB, and depending on the capacity of the power bank, it can even take up to 40 hours to have it fully charged (e.g. a power bank with a capacity of 20 000mAh). For faster charging, you will need to have a power bank that has a higher voltage than 5V input, which normally requires charging it directly from the wall socket with an AC charger.

4. Don't charge your phone full from the power bank.

Your mobile phone consumes energy all the time while charging the battery, possibly more than in normal standby. When the phone battery is getting full, around 80% to 90% full, the battery charging current starts to reduce before reaching to its full capacity, the majority of the power bank energy is lost by the phone led and conversions (app updates) etc.

5. You can watch TV with a power bank！

Yes! As we explained in point 2, most of the power banks in the market have only 5V USB output. But there are also more advanced Power Banks that allow you to choose the right voltage so you can operate bigger devices such as Televisions, picnic coolers, fans and drone batteries.

Union Online, which provides services of wholesale and customization of daily necessities, this platform aims to become a comprehensive professional foreign trade service platform, on the platform, you can find the best power bank which you want.