How To Choose A Power Bank
With its powerful features, mobile phone has become an important part of people’s daily life. Some people suffer from “Low Battery Anxiety” when battery power is insufficient, which has already affected their daily lives. The arrival of mobile power bank makes up for the serious shortage of battery life. However, inferior power bank not only damages the mobile phone but may bring great danger in our safety anytime. So please pay attention to following main parameters when choosing the power bank.
1 .Battery cells
The main component that determines the safety of power bank is the battery cells, which includes lithium-ion battery and lithium-polymer battery. One method is to read the label and the another way is to check the thickness. Lithium-ion battery generally use 18650 batteries (18 means a diameter of 18mm, 65 means a length of 65mm, and 0 indicates a cylindrical battery.) The thickness of the power bank made with this type of battery is generally more than 19mm. lithium-polymer battery is usually in flaky shape.
Is the bigger the better? Not really. The longer it takes to charge if the capacity of the power bank is larger. It may damage the battery with plenty to spare. Meanwhile, it is more likely to be a virtual mark. Therefore, a power bank with capacity of 5000mAh or 10000mAh is just right, which can charge iPhone 2 to 4 times. And it is easy to carry while enough for daily use.
3 .Security and certification
General brand of power bank has the certifications, like 3C, CE, ROHS, UL, etc. And it carries with IC protection board, which automatically adjusts the charging and discharging, shuts the charging process down ween fully charged, improves the conversion rate and reduces the impact of resistance on charging.