USB Phone World Archive Page
Sunday, March 17, 2013
With iPhone, iPad, HTC, and other smart phones, tablet computers become more and more popular in the market, external battery is considered by more and more terminal users to get more power energy outside. However, as there are many kinds of external batteries of different capacity and brands, it is not easy to select a high cost performance one.
Actually, just like many other lithium-ion batteries, the important elements to determine the external power supply quality include lithium-ion cells, protection circuits, interface, connector tip, battery shell, etc.
As a matter of fact, lithium-ion cells are the most expensive part for external battery. That is why the higher capacity, the higher sales price. In USB Phone World, there are 3000mAh, 5000mAh, 7800mAh and 10000mAh versions for selected.
Lithium Polymer battery cells usually select three parts of internal structure, including Aluminum soft packaging, lithium-ion intermediate layer, and other accessories. As for those very slim versions, they select lithium-ion polymer cells external battery that can work flexibly. iPhone 4 has also taken advantage of it.
In theory, lithium Polymer battery cells are more securely than other cells in the market. Of course, as they are more expensive, some normal manufacturers don’t supply such versions inside.
On the other hand, users can also distinguish them from each other from the shape, size, color, brand, capacity, price and so on. Lithium Polymer batteries have higher capacity in size when it can last longer. Of course, users can fully charge it, and discharge to check if the external battery can last long enough as is indicated in specs.
External Power Bank should also have got a qualified control circuits to switch output power and keep the whole external battery work in secure and stable conditions. And they are also working as internal resistances to protect it from hurting.
When selecting a new external battery, users should need to learn if they need to charge for tablet computer more than smart phones, and how often will it be charged later. Then it will be easy to determine if a higher capacity one is needed.
by: USB Phone World
Thursday, March 14, 2013
Recently, many new laptop computers with Windows 8 system have been released in the market, which has caught many eyes already. Among them, Acer Aspire Ultra M5-581T series is a star version of 6 hour standby time which is 21Kg super laptop with 15.6 inch screen. However, comparatively, Macbook pro laptops have longer standby time.
If seeing movies from local hard drive, this Acer super laptop can also last for four hours and a half, which is more than one hour less than Macbook pro.
Another awesome computer of Windows 8 system is Samsung Series 3 Chromebook. However, as it is severely relies to the Internet, the standby time is of only 3 hours and three quarters.
On the average, these 18 Windows 8 laptop computers have about half an hour longer than regular versions. In some cases, some laptops can last longer when playing the movies or music.
It seems that Win 8 is of higher efficiency than Win 7. So is the standby time after upgraded. According to Which laboratory, more than 50 laptop computers have been taken part, it shows that the longest is of 7 hrs while the shortest is of only 1.5 hr.
A famous British magazine “Which” has also found that Macbook 13 inch replacement battery with Retina screen has much longer standby time than other laptop computers tested.
When surfing on the Internet to browsing the websites, Acer Aspire M5-581T is the best Win 8 laptop with satisfied standby time. The second one comes to be Samsung Series 3 Chromebook, which hasn’ used Win 8 is of peer performance in the show. In standby time, this 13 inch Retina Macbook Pro will become the winter of this season.
by: USB Phone World