Tips of Buying a Mobile Power Bank

Mobile Power Bank, also called Mobile Power Pack, External Battery Charger or Portable Battery Backup, is a portable charger with both power supplying and charging functions for mobile phone, e-Readers, MP3, PDA and other small devices. In recent years digital devices’ sale volume has been skyrocketing while the development of battery technology for digital devices is not a compliment.

Take smart phones for example, mobile internet connection brings blowout-breakout for smart terminals. As 3G is getting increasingly mature and 4G time is around the corner, and the LED screen is getting larger and larger so that they are more electricity-consuming than the old ones, in the mean time, the lack of innovation of mobile batteries as well as the hardware wars brought by Android, all of the above make the smart phones can only work for one day long. People want to make their digital devices be charged at anywhere and anytime. Therefore, the portable charger market comes.

In 2013, the charger market increased massively in both output and sale volume along with customer demands. More and more electric products pop up in the market. Finding a power bank to convert DC power to AC seems to be a simple task, but when you start shopping you will soon find that there are so many choices. The dazzling types make consumers wonder: How can I choose a proper mobile power bank? This why I write this paper,here is some tips of buying the power bank!

Basically, there are seven factors that should be taken into consideration before you choose a power bank for your digital device: Capacity, Security, Compatibility, Portability, Brand, Additional function and Price.

Capacity. The higher the capacity, the better? No! The capacity is one of the most important parameters which influence the charge times after a fully charging to the power bank, but what you should you know is that the capacity is proportional to its size. The higher the capacity, the larger the size. It usually has 5 to 6 battery cells inside when the capacity is above 10,000mAh, just like a piece of brick. There’s no need to bring a “stick” around if you do not go outside frequently. Besides, the false labeling capacity phenomenon is still serious nowadays. Some dishonest manufactures deceive consumers with modified capacity but in fact the true capacity is much lower than it marked. Therefore, some high capacity MPP are not credulous.

Security. There are two aspects about security: charging equipments security such as mobile phone, mp3 and iPod, etc, and personal security. How to ensure security? On one hand, this can be achieved by protecting circuit such as over-current, overcharge, over discharge, short circuit as well as temperature protection set on PCB Assembly. When some unexpected situation happens, these protection circuits will intervene automatically to cut off the circuit; on the other hand, security can be pursued by applying high-qualified battery and secure battery types. Generally speaking, common polymer batteries are safer than 18650 lithium batteries for customers. Batteries from market-leading-manufacturers are more ensured than cottage ones. The charger price varies greatly, many specially-low-price chargers are made of defective electric goods and it may cause danger if you choose those ones.

Compatibility. You may have an iPhone while your brother have an Android phone. You may also want to charge your Kindle and MP3 using one power bank. The best choice is to buy a power bank with multiple USB interfaces and charging adapters so that it can be compatible with most of your digital devices.

Portability. Modern society makes people have a higher requirements for convenience and portability. Power bank is just one of the “spokesmen” of technical innovation of portability. An appropriate power bank should be the size and weight you can carry with great convenience.

Brand. As we say before, inferior power bank may cause danger to both you and your devices. Usually well-known brands have high quality products and perfect after-sale service. Here I’ll suggest some well-known brands of power bank on Amozon.com: Chromo Inc, PowerGen, Anker, Photive, Elivebuy®, Disney, Yubi Power, eFreesia, Meco, Poweradd™, Tenergy, Tekkeon, Kocaso, Brookstone, DODOCOO.

Additional function. Though the main function of a power bank is to charge power, some additional features can bring us benefits as well. For example, multiple charging adapters can help extend the range of use, double interfaces can recharge two devices at the same time, a LED light can be used in an emergency, and so forth. You can choose power bank with additional functions through your own needs.

Price. You may think the more expensive,the power bank is more qualified. This is not entirely accurate. The price range from dozens of yuan to hundreds even thousands of yuan. Actually the cost of a power bank, mainly including battery cell, PCB and the shell, is not that high. Here is a reference about the price: 1000mAh, for example, a power bank with 18650 battery cells usually ranges from 100 yuan to 130yuan, while with polymer cells usually ranges between 150 yuan and 200 yuan.

source from :http://sellelectronicgood.wordpress.com/2014/02/10/tips-of-buying-a-mobile-power-bank/

Top 5 power banks recommended

With the development of mobile smart phones, more and more people would own one smart phone at least in their daily lives. It is well established that a smart phone is a mobile phone built on a mobile operating system, with more advanced computing capability and connectivity than a feature phone. The mobile smart phone need more power because they really consume power. Almost we have to charge it between 1-2 days if we own a smart phone such as iPhone or Galaxy Note . To meet the demands of those who are always on journey with Smart Phone, lots of power banks come up. 

     However, in choosing the best and the most recommended brands, it is somewhat difficult for us since many good products from various brands available on the market today. 

     After reading some research papers in blogs and reviews in amazon.com,I write this paper to introduce 5 power banks of different brands with good quality and cost-performance ration.

     

1.Anker® Astro 5600mAh Portable Power Bank 

Specifications:

Product name:Anker® Astro Portable Power Bank

Capacity: 5600mAh

Battery Cell: Polymer

Suitable for your iPhone 4S / 4G / 3GS, Samsung Galaxy S4 / S3,  audio playback, and most mobile phones.

Device type: external battery pack

input current:DC5A/1A
output current:DC5A/1A     DC5A/0.5A

Average price :about $30

Features:

Compact, portable and stylish design

Easily fits into your bag to provide instant power

Perfect for long plane flights, road trips, or whenever you need to charge your mobile devices wherever you are.

Samsung Grade A cells and high quality lithiumion battery ensures reliability

Convenient flashlight updated to prevent accidental activation: lights only after pressing the power button for 2 seconds

Four LED indicators reveal the battery level

2.New Trent iCarrier 12000mAh Portable Power Bank

Specifications:

Product name:New Trent iCarrier 12000mAh Portable Power Bank

Capacity: 12000mAh

Battery Cell: Polymer

Suitable for most Apple, Android and Windows Smartphone's and 5V Tablet, goPro, GPS, portable game consoles, etc.

Device type: external battery pack

Input: 5V/1.5A
Outputs: 5V/2.1A and 5V/1A
Average price:$40

Features:
Charging your phones and tablets faster than any other brands of external battery.

Built to Last
Sturdy build, fingerprint-resistant black matte finish, simple portable design, 

No increase charge time when charging two devices. 

Dimensions: 3.9 x 3.6 x 1.1 inches

3.YooBao YB-651 13,000mAh Thunder Power Bank

Specifications:
Product name: YooBao Thunder power bank, Model: YB651
Suitable for mobile phones, iPhone, iPad, cameras, Htc, Samsung, Blackberry, Nokia, PSP/NDSL, MP3/MP4 players ,etc.
Capacity: 13,000mAh
Battery Cell: Polymer
Device type: external battery pack
Input: 5V DC, 1,000mA
Output: 1,000mA and 1,500mA
Color: Black
average price:about$60

Features:
Slim and easy to carry
High capacity, rechargeable, and universal power pack
Keep talking and keep playing longer
Five LED indicators show battery's real time capacity
Elegant and executive design make it looks fashionable and smart.

4.Sony Xperia Z Ultra XL39h 5000mAh Portable Power Bank Charger

Specification:

Product name:Sony Xperia Z Ultra XL39h 5000mAh Portable Power Bank
Stand function support
Capacity: 5000mah

Battery Cell: Polymer
Charging time: around 3-5 hours
Input : 5V/0.5A
Output: 5V/0.8A

Average price :about$29

Features:
Ultra-thin design and perfect dimensions

Led indicators for power balance
Very light and convenient to carry
Easy installation and removal
Stand support
Flip cover
Works as both an extended battery set and a protection case.
External battery charger case for Sony Xperia Z Ultra XL39h

  

5.Samsung Universal USB 9000mAh power bank     

Specification:

Product name:Samsung Universal USB 9000mAh power bank 

Capacity: 9000mAh

Battery Cell: Polymer

Suitable for：Smartphones ,Tablets and any device supporting USB charging
Charging time: around 3-5 hours

Device type: external battery pack

Input : 5V

Output: 5.2V
Average price:

Features:

Provides up to 3 full charges on your Samsung smartphone and more than 1 full charge on your Samsung tablet

Easily fits into your bag to provide instant power

    The power banks listed above are good products with reasonable price.Yesterday, some person who is professional in this field answered me a question I asked in yahoo.They told me that Anker and New Trent are the most efficient ones ,the reason why they say "efficient" because there are knock off out there claiming to have a 15,000mah capacity, but because it's not efficient at transforming the power from the battery to the phone, most of these knock off's will probably get on 40%-50% efficiency. While the Anker and New Trent can get it to 70% efficiency.

    As far as I can consider,the power banks you wanna buy depend on your actual demand. You could go and buy a power bank at best buy for $100 that has 10,000mAh of power or you could buy one on amazon for $40 that has the same amount of power but some unfamiliar brand.

source from:http://sellelectronicgood.wordpress.com

The supplier of powder coating equipment such as powder coating line

Hangzhou Color Powder Coating Equipment Co., Ltd. is located in Hangzhou, 180km away from Shanghai port.
Being a leading developer and manufacturer in China, with most up-to-date equipment(powder coating reciprocator),COLO has been successfully serving the industries by not only supplying powder coating equipment with related parts, but also offering technological cooperation to customers for long-term mutual benefits. Every plant set up by COLO is a turnkey project personalized according to client's requirements. Due to reliable quality and competitive price, COLO products and services have been well accepted both at home and abroad. Any inquiry will be highly appreciated and OEM welcome.
COLO people are dedicated to innovative surface finishing solutions!

lenoxi's blog: Powder coating reciprocator

lenoxi's blog: Powder coating reciprocator: Powder coating reciprocator Powder coating reciprocator is widely used in all fields, especially in powder coating spray. The autom...

what is powder coating reciprocator?

Reciprocator is used as the automatic painting lifter.The reciprocator can carry automatic powder spray guns working smoothly.

powder coating reciprocator

The reciprocator is used for smooth movements of guns for application of liquid paintor powder coating at various speeds and stroke length to suit conveyor speed and jig height respectively.The spraying guns are mounted on an arm extended from a carriage. It is programmed to move in required stroke lengths and speeds depending on object height for up and down movements of guns and speed of conveyors.The PLC based smart control and keypad enables you to punch in user-friendly parameters like stroke length and speed can be viewed on LCD display, especially the top dead point and bottom dead point can be easily set and remembered online.

Advantages:
1). Easily Adjustable Stroke Length and Speed to Suit Production Needs.
2). Precise Speed and Stroke Length.
3). Production and Quality of Coating Increased Dramatically.
4). Exact Stroke Length Adjustment Reduces Paint / Powder Wastage.
5). Much less Maintenance - Only Cleaning & Lubrication is required periodically.
6). Much less Labor Cost.
7). Electronically Controlled Smooth Reversing Reduces Gun. 

Performance Characteristics Of Powder Coating (part 1)

Powder Coating not only have the good appearance characteristics of powder coating but good performance characteristics.
advanced Durability.
    Recent research and testing shows that specially formulated polyester powders that provide even greater weatherability than achievable in previous years, and it shows greater success in long-term Florida exposure testing. TGIC-based powders are being used on outdoor stadium seating and other exterior applications that were previously susceptible to degradation from ultraviolet rays. Powder with polytetrafluoroethylene (Teflon) additives for increased resistance to abrasion also benefit Light poles, lawn furniture, shopping carts, and shelving.
Electroconductive & Electrodissipative. 
    Electronic components makers sometimes use electroconductive and electrodissipative powder coatings, which provide electrostatic discharge protection of the components, critical during the manufacture, testing and transport of electronic goods. The most common colors for these special powders are black and charcoal, but lighter colors are also available.
Good performance in Heat-Sensitive Substrates. 

nylon coating

    In recent years, ongoing research and development has been devoted to formulating powders that can cure at lower temperatures as low as 200°F, without losing good durability or quality. These powders can be used on temperature-sensitive materials, as well as on massive parts that require enormous amounts of energy with other curing systems. More wood materials such as particle board and fiberboard can now benefit from a powder coated finish. This technology has been used in office furniture, kitchen cabinets, and ready-to-assemble furniture for homeowners in our daily life. In-roads have also been made in perfecting powder coating for hardwoods.
    In addition to successfully penetrating the market for wood products, powder has proven to be an effective finishing choice for other heat sensitive substrates such as some plastic parts and products, using nylon, polycarbonates, polyethylene and other materials. Plastic products now powder coated include office furniture, handles and knobs for major appliances, automotive parts and trim, medical equipment, and seating for buses, trains, and stadiums. The coating is effective in covering imperfections in the plastic molding process.

Powder coating line in our daily life

    powder coating line was not known so much ten years ago, The main area of use powder coating line was known as aluminum,steel door ,machinery,lighting,white goods, automotive, metal furniture,steek shelving,table,chair,door handle,headwall,stand,park&garden furniture,children’s play parks,agricultural tools and equipment,powder panels,bicycle,fence,accessories,panel radiater,frying pan,saucepan,kitchen tool and utensils,etc;however,it is also used in the glass and wood industries. 
     

 Normally, when you paint something, the pigment is dissolved in a solvent. You paint the mixture on, and the solvent evaporates and leaves behind the pigment. For powder coating the pigment is powdered. The part is charged with static electricity and then sprayed with the powder, which sticks to it in a uniform layer. Then the part is baked and the pigment melts into a coating. The advantage of this is first that it's cheaper because you don't waste as much pigment, and also it's better for the environment because you don't have all that solvent going into the atmosphere.
       The process is an efficient and highly effective method of coating a wide variety of consumer products ranging from domestic appliances to garden furniture.