Google Gmail become the world’s first E-mail service

U.S. market research firm comScore's latest data show that in October this year, Gmail has become the world's largest e-mail service.

This summer, google ever said that Gmail’s monthly active users has reached to 425 million, become the world's first e-mail service, But U.S. technology blog VentureBeat pointed out, this has a large gap between the data and comScore data, which the latter did not consider the number of mobile users. The date released by Microsoft Hotmail and Yahoo Mail are closer to comScore data.

According to comScore data, the Web-based e-mail service independent user visits are overall decline in, but Gmail first time become the first. Globally, Yahoo Mail and Gmail to compete in the similar markets, their customers are mainly from the United States, Japan, India, the United Kingdom and France. Hotmail, is targeted at a different market, and its users in addition to from the United States, Britain and France, but also from Brazil and Mexico.

Though Gmail ranked first in the worldwild, but yahoo mail is still the leading in the U.S. market, its monthly unique visitors is 7 million more than Gmail, and also has higher penetration. In October, 40.8% of Americans use Yahoo Mail, use Gmail and Hotmail Americans were 36.7% and 18.9%.

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The Guide of purchasing a Solar Charger

Nowadays, as the developed of the solar energy, the solar products has gone into the household, such as the solar water-hearter, solar chargers and so on, today we will talk about the guide of purchasing a solar charger, help you choose a good solar charger for cell phone, tablet, ipad, iphone and laptop.

The solar charger is good or bad, have four key points:

1. The using Efficiency.

Using efficiency include two ways, The conversion efficiency of the solar panel, and the secondary conversion efficiency. The conversion efficiency of the solar panel, As the name suggests is the efficiency of conversion of light energy into electrical energy, and the secondary conversion efficiency is the efficiency of light energy into electrical energy stored in the battery.

2. The quality and the capacity of the battery.

The capacity of the battery inside the solar charger must be 1.2 times or higher than your products, only this can full charged your products, because there will be energy losses in the energy conversion process, the conversion rate is generally 80% -90%. And the quality of the battery is related to the solar charger’s using life.

3. The control circuit and the protection circuit

Solar mobile phone charger products in the market is very complex, It's protection circuit and control circuit may be a simple design, or in poor compatibility, it is very easy to charge bad the phone or shorten the phone and battery’s using life. Therefore, the design of the control and protection circuits are very important.

4. The accessories of Solar Charger

This is a problem that many users may ignore, but it is a point that should not be ignored. There are many bad suppliers on the market for price advantage and configure inferior accessories, such as the AC Charger, the AC Charger can divided into with IC protection circuit and without IC protection circuit these two kinds, the AC Charger without IC protection circuit not only little charging current, long charging time, bad charging effect, but also have security risks, so when you are choosing a solar charger, you should pay more attention to whether the AC Charger has IC protection circuit or not.

Solar cell phone charger can only be used in an emergency, you can not completely rely on it to charge mobile phones and other digital products, generally speaking, to full charge the cell phone, the Solar Charger of Cell Phone solar panels must more than 0.7W.

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The type of External Battery

Now, the type of the external battery have five types, they are External Battery contains Lighting function, External Battery only contains Charging function, External Battery contains Solar panels, External Battery use Flexible flexible monolithic integrated circuit pv thin film solar panel, and the External Battery that made up of The latest technology and the most secure lithium polymer batteries. Now, let’s have a detail introduction.

1. External Battery contains Lighting function

Mobile power with lighting function, built-in super energy-efficient LED lights, very power, If purely for LED lighting, according to the capacity of the built-in battery can use 3 hours to 30 hours or even longer, this depends on the capacity of the External Battery.

2. External Battery only contains Charging function

Only with the charging function of the mobile power, this charger without any other extended features. The advantage of this type of charger is the big capacity very suitable for professional external power supply.

3. External Battery contains Solar panels

Mobile power with solar panels, charged by sunlight during use so as to achieve the purpose of top-up electricity. This type of external battery mainly use on the special forces and special industries before, on civilian, With the gradual improvement of the conversion rate of solar panels, and now also gradually popular.

4. External Battery use Flexible flexible monolithic integrated circuit pv thin film solar panel

Use the Flexible flexible monolithic integrated circuit pv thin film solar panel, store the solar energy in the battery, can also be directly to transfer the solar energy into electrical energy to charge the electronic device, In poor lighting conditions, it can also to maximize energy capture efficiency, it has bendable, waterproof advantages, compared to other solar products, it is more flexible and lightweight.

5. External Battery that made up of The latest technology and the most secure lithium polymer batteries

With the latest technology and the most secure lithium polymer batteries to produce the highest quality and safety mobile power supply, store the power in the battery cells, higher and faster power transfer to the electronic equipment, it can charge other equipments during it was being charged, has the advantages of convenient, safe protected, Compared to other mobile power products, to achieve the highest safety.

The core components of different tupe external batteries, simplely to say has two parts, first is the media of storing electricity, and second is the media of transfer other energy into energy. So the good or bad cells can be used as one of the important criterion to measure the quality of mobile power.

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The using tips of External Battery

External battery makes our life convenience, it can charge almost all of the digital devices that use the USB port charge, but it just like other batteries, should also be maintained, today we will talk about the using tips of external battery:

1. The external battery output voltage range, although some devices have a USB interface, but also requires you to use the mobile power supply. However, you should pay attention to your device's input voltage range, universal mobile power supply voltage output range is 5.3-0.5v, If the input voltage range of your equipment requirements is not within the range of mobile power, then, it is  suggested you do not use external power supply your devices to ensure the life battery of your mobile power.

2. The USB connector must be matched, because different devices the USB ports are different, so To normal use of mobile power supply for your devices, please use the the matching USB data interface.

3. The placing environment of the external battery, all kinds of electrical need to be placed in a dry and less air humidity environment, the large air humidity environment is harm to the preservation of all types of electrical.

4. often use your external battery, monthly charge and discharge the external battery, often use will be able to maximize the improvement of the life of mobile power.

5. Avoid falling down and shocking, Mobile power is a fragile parts, the internal components can not withstand the beating, In particular, to prevent careless landing in the process of using. Do not drop, knock or shake the mobile power. Discourteous treatment of mobile power will break the internal circuit boards.

6. Anti-cold and heart, do not put the external battery in the overheart places, High temperatures can shorten the life of electronic devices, destroying mobile power, to make some plastic warp or melt. You should not also put it in the place that very cold, when the external battery is working at a over cold environment, when the internal temperature rises, there will have moisture inside the mobile power and damage electronic circuit boards.

7. Anti-harsh chemicals. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the mobile power. To clean the stains on the appearance of the external battery, you can use the cotton with a small amount of anhydrous alcohol scrub.

The above is the using tips of the external battery, hope it can help you make your external battery have a longer life.

Scientists fired "nano-flowers": a substantial increase in battery capacity

Recently, American scientists firing a pink “flower” in the furnaces. Although it did not flavor, but it can save a lot of energy, is expected to bring a battery revolution.

"Nano-flowers" are made up of the dust of germanium metal sulfide, and sulfide Germanium is a semiconductor material, it is Petal-like, although the object is very small, but the surface area is very large, so it can store a lot of energy.

The structure of this nano-objects is made ​​by scientists from North Carolina State University and his colleagues. They poured the Metal dust into the melting pot, till gasification, and then blown to the relatively low temperature of the furnace area, the dust Solidify into a layers of sheet, These "petals" shaped sheets have only 20 to 30 nanometers thick, and not longer than 100 nanometers.

The researchers said that due to the small thickness, larger surface area, the flower-like structure is expected to improve the capacity of lithium battery.

The basic information of Solar Charger

Solar charger is a device that can convert solar energy into electrical energy stored in a battery inside, the battery can be for any form of power storage devices, mainly are lead-acid batteries, lithium batteries, nickel metal hydride battery, and the load can be mobile phones and other digital products, the load is diversity.

The Product Type of Solar Charger

Type one, with lighting function’s solar charger, built-in super energy-efficient LED lighting lamps, very power. If simply used for LED lighting, according to the size of the built-in battery capacity can be used for 3 hours to 30 hours.

Type two, only with charging function’s solar charger, this charger without any other extended features. The advantage of this type of charger is the capacity is very large, very suitable for professional external power supply.

Type three, support power adjustable block’s solar charger. General Support 5v, 9v can be adjusted.

Solar panels

Nowadays, the Market-oriented conversion rate of solar panels is still relatively low, generally have only 16.5%, some have 17%, and someone abroad have done by 25%.

U.S. researchers at Rensselaer Polytechnic Institute in 2008 have develop a new type of coating, covered this coating in solar panels can make the the sun absorption rate increased to 96.2%, while the sun absorption rate for ordinary solar panels have only about 70%.

The new coating is mainly to solve two technical problems, one is to help solar panels absorb almost all of the solar spectrum, the other one is to make the solar panels absorb the sunlight from a larger angle, thereby enhancing the solar panels absorb sunlight efficiency.

Ordinary solar panels typically only absorb part of the solar spectrum, and usually when only absorb direct sunlight the work efficiency is high, so a lot of solar installations are all equipped with automatic adjustment system to ensure that the solar panels is always to keep the sun most conducive to absorptionthe angle of energy.

The battery of Solar Charger for Cell Phone are usually lithium battery, the best should be the lithium polymer battery, security and high-performance

The principle of the solar cell phone charger is converted the solar energy to electrical energy stored in the built-in battery of solar cell phone charger, when need to charge their cell phones, solar cell phone charger battery will output the energy to charge the phone.

Applications, this kind of solar charger can be used for cell phone, digital camera, PDA, MP3, MP4, tablet PC and other digital products.

External Battery and its Cells

External Battery also be called mobile power. With the popularity of various smart phones and tablet pcs, More and more people find all kinds of digital products, particularly the power of the cell phone itself has been unable to meet our daily use of the life time. And the emergence of the external battery can solve this problem to some extent. So to those who do not come into contact with the mobile power consumers, how to choose the array of mobile power ?

Good external battery, the key we have to see is the battery’s cells. The internal cells of mobile power just like a car's fuel tank and transmission system, responsible for providing endless power for the entire mobile power, Directly determine the external battery is good or bad. The board of external battery can be seen as a control system, is mainly used to be responsible for power distribution and conversion, convert the 3.7V lithium batteries (or higher) voltage into the standard 5V (or higher) voltage, supply power to the devices that need to be charged.

The current external batteries generally use the lithium-ion battery, but the performance is varies, we can not distinguish from their sharp, and the general specifications label also can not reflect. Now Let's start from the batteries, step by step, to explore the mysterious world of mobile power.

The lithium-ion battery, depending on the different electrolyte material used, can be divided into two categories of liquid lithium ion battery (LIB) and lithium ion polymer batteries (LIP). Both LIB and LIP ‘s positive and negative material is the same, cathode materials for lithium cobalt oxide, nickel cobalt manganese and lithium iron phosphate material these three kinds, and the extremely negative is graphite, their working principle is basically the same.

Their main difference is the electrolytes, the liquid state lithium ion battery using a liquid electrolyte, and the lithium ion polymer batteries use the solid polymer electrolyte instead, Such polymers may be a "dry state", and may be a "colloidal", present, most use the polymer gel electrolyte.

    This is the introduction of the external and its cells, next article we will have a detail introduction of the mobile power cells, that is LiCoO2, LiNiCoMnO2 and LiFePO4. To purchase a good external battery, you can visit the website: http://www.external-battery.com.au , it sells all kinds of external battery and solar charger for Laptop, iPad, iPhone, Cell Phone and outdoor activities.

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