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I have worked in the new company for a few months and lived a busy life. As a responsible secretary, you need to be on call for 24 hours. However, you have no idea that a little power bank could decide your promotion and change your career.

It was 7:30 a.m and I was sitting besides our company’s CEO in the client’s office. Four hours ago I was sleeping in my sweet bed. At midnight, I suddenly received a phone call from my boss that I had half an hour to get myself ready to go for a business trip with our CEO and him. Therefore, I dragged myself out of bed and packed some clothes, files, laptop, power bank 5000mah and other daily stuff. I took a taxi to the airport and waited for them. About 4 a.m, they arrived at the airport and we got on the plane very soon. On the plane, we got an email from the client and he said he wanted to talk with our CEO on the phone after we got off the plane because there was an emergency. The problem was that our CEO’s phone nearly ran out of power and those secret files were only in his phone. We could call the client, but we didn’t have those files. Our CEO was worried about how to explain to our client he might not call him on time. 

My boss told me that we did not have enough time to find a place to buy a new power charger, which occurred to me that I seemed to bring my 6000 mah external battery with me and it could be useful. After we got off the plane, I gave my power bank to the CEO to try whether it could help him to call that client. Fortunately, it worked well and everybody was happy for this, our CEO, my boss and that client. I was happy too as the CEO thought that I was a good secretary with chariness and he wanted to promote me as his personal secretary. Actually, power bank is a small thing but it has great usage especially for those people who always go for business trips and use phones to contact customers every day. Don’t underestimate its effect; sometimes it will offer you an unexpected reward. 

Guangzhou Sunwith is the subsidiary company of Global Vision Group (HK) limited. We are a professional and famous power bank manufacturer and exporter in China.With our own professional R&D center, factory and marketing team, we devoted ourselves to offering customer with innovative 3C products.Our own brand "Sunwith" has won a great popularity and market share. At the same time, OEM service is offered and we want to establish a long term relationship with customers all over the world.


 
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The growth of smart devices in the world continues to increase, both users of Android, Blackberry, and IOS. But unfortunately, these smart devices are very greedy in energy consuming battery. Given these conditions, the solution appears power bank or battery backup to deal with running out of power at the time found no outlet.

Capacity will determine how time power bank can be utilized to charge our gadgets. Certainly POWERBANK with real capacity, real output and suited our needs.The power capacity If you want to buy old type power bank, you should know that maximum battery that can used for power storage is. If each battery has 2.500 Mah than the maximum number that we get is 7.500 mag.

According to the battery cells of the mobile power, it can be divided into four types basically: nickel metal hydride battery cells, lithium iron phosphate battery cells, liquid lithium-ion battery cells, and lithium polymer battery cells.

Nickel-metal hydride battery cells and lithium iron phosphate battery cells has low voltage and big nominal capacity, but the actual output efficiency is low. Compared with the lithium-ion battery cell and lithium polymer battery cell, they have no advantage. If the product description indicates this kind of battery cell, don’t choose that.
For power bank that using power bank 20000mah is a rational number and still make a sense. For full charge the power bank that has 20000mah need at least 12 hours. In normal condition, it could stand for a week.

The reason that mobile power gives out is that in the process of using, part of the battery energy cannot 100% output, part of it will be consumed in the form of heat in the internal circuitry of the mobile power, the higher the efficiency, the lower the heat will be, because of the energy losses in the circuit is less. Of course, the fever will also bring some serious problems, such as: thermal short-circuit combustion, high temperature accelerates aging of components. 

Guangzhou Sunwith Co., LTD, power bank manufacturer, is the subsidiary company of Global Vision Group (HK) limited. We are a professional and famous power bank manufacturer and exporter in China.We found the external battery division to solve this matter. Soon after, we lunched the external battery and Iphone power bank with fashionable designs, reliable quality and competitive price. At present, our product line has been expanded from the battery charger to mobile phone cases and accessories which are suitable for iPhone, iPods, iPad, smart phones, digital tablets and other portable devices.


 
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The real development of external battery is in 2011. Many of us call it phone mobile power. But who knows that external battery was not invented for mobile phones? With the increase of smart-phones, a large number of mobile powers were lacked. People love to use Iphone so it's possible for them to buy an Iphone external battery.

Only a few people know when the first external battery appears. Mobile Power first appeared in 2011 CES (the Consumer Electronics Show). CES is held annually in the United States, which is the world's largest trade fair of consumer technology products. You can find any types external battery there, such as 20000mah external battery , external battery 10000mah.

In an obscure corner, a student used a few AA batteries and then pieced together with a mobile power control circuit to give the presentation of charging for digital products. At that time the "external battery" even did not have a shape. That is a circuit board, a few USB and a few batteries. You can see clearly inside. Today's external battery is colorful and attractive. Even one such an obscure corner, some people discovered it and then many people follow it. Finally the businesses of external battery were a great success.

External battery is a new charge which has power supply and charging functions. Digital equipments can be charged or standby or power whenever and wherever they want. Generally speaking, it is made by lithium batteries or a dry battery, and it is also called portable power.

http://www.external-battery.net established in 2005, is the subsidiary company of Global Vision Group (HK) limited. It is a professional and famous power bank manufacturer and exporter in China. With its professional R&D center, factory and marketing team, we devoted ourselves to offering customer with innovative 3C products. In 2010, the smart phone and tablet (Iphone, Ipod, Ipad, Sumsung, Motorola, blackberry, Nokia...) developed tremendously.


 
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Whether phone or other electrical battery, battery maintenance is the same. Maintenance of nickel-metal hydride battery, lead-acid and lithium ion regardless of mobile and fixed, nor sub-brands or manufacturers.
The loss of speed and battery life depends on many factors, the quality and capacity of the battery is very important, as well as the intensity and frequency of use, maintenance if properly will affect battery life.

Avoid throw touch, especially careful not to squeeze. Electrical products has always been not withstand the kind of throw touch,portable external battery chargers are no exception. A small mobile power battery is actually a complex device, throw touch or squeeze at any time may break inside the components, especially some people like to readily power on the move under the seat or on the nightstand, pressing books by various magazines, please note that this is very easy to damage the mobile power batteries.

Note that the temperature and humidity. Surely we have had this experience, if the weather is wet, especially back to the south, home to the TV one open, the screen is a little blurry, colors will be distorted, and this is the impact of humidity for appliances. Of course, mobile power is no exception, so try to avoid extremes of temperature and humidity are too mobile power storage environment, if there is more humid weather situation, you can use it more frequently, in order to charge it, so it is a good protection method.

Do not try to use fully charged. This is like the Iphone External Battery maintenance methods, cell phone batteries generally do not advocate the case did not finish the charging is interrupted use of mobile power is also true. Mobile power charger for mobile phone battery life first, before you move to full battery power supply itself, in the process, try to avoid the charge has not been completed is interrupted, as this also sacrificed its life.

Guangzhou Sunwith Co., LTD, established in 2005, is the subsidiary company of Global Vision Group (HK) limited. We are a professional and famous power bank manufacturer and exporter in China.With our own professional R&D center, factory and marketing team, we devoted ourselves to offering customer with innovative 3C products.In 2010, the smart phone and tablet (Iphone, Ipod , Ipad, Sumsung, Motorola, blackberry, Nokia...) developed tremendously, the quick die-off battery becomes a frustrating problem for the users. We found the external battery division to solve this matter. Soon after, we lunched the external battery and Iphone power bank with fashionable designs, reliable quality and competitive price. At present, our product line has been expanded from the battery charger to mobile phone cases and accessories which are suitable for iPhone, iPods, iPad, smart phones, digital tablets and other portable devices.

 
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As smart-phone’s bottleneck problem remains unsolved, external battery quickly becomes popular like "gas station". It is not only easy to carry but also has brought a steady of electricity which is supplemented for mobile phones. It’s loved deeply by consumers. But there are plenty of safety problems behind the popular external battery markets. It was a "sneak mine" and the product quality varies greatly.

There is a fact that even an external battery's appearance looks good, its inside could be made of an innovative, inferior battery cells, which is very easy to cause quality problems. The battery cells burn up, battery swells, its cruising power is short and even a little bit of voltage instability would cause serious safety issues. In addition, the cheap copy companies are good at fabricating a fake scalar and even some external batteries of big brand are the same.

Next is the circuit board. An excellent circuit board could maximize the.External battery's performanc. Otherwise, high quality batteries can not avoid an accident. Meanwhile, the special and excellent circuit design can protect the cells and reduce energy losses, which maximize cells energy to convert into electrical energy.

Furthermore, the circuit board also influences the stability of voltage and current. For the charging instruments, charging voltage and the current are required for a long time stability to make charging faster and safer. Additionally, protections are indeed. Such as overload, over-current, over charge, over temperature and short circuit.

http://www.external-battery.net  established in 2005, is the subsidiary company of Global Vision Group (HK) limited. It is a professional and famous power bank manufacturer and exporter in China. With its professional R&D center, factory and marketing team, we devoted ourselves to offering customer with innovative 3C products. In 2010, the smart phone and tablet (Iphone, Ipod, Ipad, Sumsung, Motorola, blackberry, Nokia...) developed tremendously.


 
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Now available in a wide variety of mobile power, mobile power in the selection of our time, in addition to comparing its appearance and portability, but often also by comparing the mobile power parameters. So, mobile power noteworthy main performance parameters, what does? In this small series made a summarized:

Capacity (mAh): rechargeable battery is mAh (mAh), is the product of current intensity and time, when the current intensity with a milliamp (mA) for the unit, the time in hours (h) to do unit, both of them Multiply that mAh (mAh). Which represents the discharge current in a full discharge time, for example, means 1000 mAh 1000 mAh The battery current may be discharged for 1 hour.

Mobile power capacity into not too strict distinction, the general mobile power capacity 1000mAh-12000mAh about considering mainstream smart phone 2000mAh battery capacity is generally about (such as millet M2 battery capacity of mAh, the battery capacity of the Samsung i9300 2100mAh), so we will move into 2000mAh power capacity by the following (one-time charge, considering the portability) ,2000-5000mAh (give phone charging 1-2 times), 5000mAh-10000mAh (give phone recharged many times, or to charge your tablet) and 10000mAh above (to charge multiple devices) four grades, and will be in the subsequent evaluation of these four grades of different models of mobile power for evaluation.

We also pointed out that for mobile power, the greater the capacity is not better, after all, the capacity can be measured using the time only one parameter. At the time of purchase, should be based on their actual usage habits and needs to choose, should not blind pursuit of "high capacity."

Also worth noting is that the mobile power capacity under normal circumstances is the manufacturer of the marked on the product packaging capacity value, this value is generally specific to mobile power capacity internal batteries capacity value, rather than many consumers think actual capacity value can be used.

Output Voltage (V): Imitation computer USB port and cell phone chargers, usually 5V;

Output Current (mA): Currently the more common output current standards 500mA, 1000mA (1A) and 2100mA (2.1A) and so on. The former two are generally used to charge the phone, which is common in larger capacity mobile power to charge your tablet. And capacity, the output current is also selected mobile power needs to be considered an important indicator. This is because, in the case of the same voltage, the nominal parameters of the device to be charged is more similar to the current of the charging process to allow more efficient. Output current of the equipment on the different charging efficiency, love machine will engage in subsequent tests to verify.

Input Voltage (V): Imitation computer USB port and cell phone chargers, usually 5V;

Input Current (mA): similar mobile power supply output current to directly affect the charging efficiency of digital products, mobile power input current will also directly affect the charging efficiency of the mobile power. For example, a 12000mAh mobile power, if the rated input current of only 500mA, which means that the time required for full mobile power up more than 20 hours; But if the rated input current of 2.1A, then only about seven hours or so, is the sleep time at night can be filled.

Conversion Rate (%): In layman's terms, mobile power mobile power conversion rate is the internal batteries for charging and discharging the conversion efficiency. For example, in theory, a 5000mAh mobile power, if the cross-flow 5V/1A power charging, then five hours can be filled, but in fact it is not. This is because both the internal telecommunications and mobile power protection board, power supply interface, the charging and discharging process will have some wear and tear, including:

Circuit switching losses;

Run their own loss;

Boost loss; like.

Which we feel is caused by loss of boost, "Why do not we move the power capacity of the imagination so big" reasons. Mobile power lithium batteries used in discharge voltage typically 3.7V-4.2V, while mobile phones and other digital products, standard input voltage of 5V, so mobile power needs through internal booster circuit, the output voltage of 5V to charge the phone , which were also a loss.

In simple terms, the so-called "capacity" only on behalf of the mobile power specified at nominal voltage output and current discharge capacity, but does not really represent the true energy of mobile power. When the battery's energy in watts (Wh) as a unit, as capacity (mAh) and the rated voltage (V) of the product, such as a 5000mAh mobile power, where the capacity of lithium batteries capacity, rated voltage of 3.7V, Therefore, the energy should be 5000mAh * 3.7V/1000 = 18.5Wh, but if after the boosted output to 5V, the output power is effectively 18.5Wh/5V * 1000 = 3700mAh, this is what we may be found in the use, a nominal 5000mAh mobile power, it may not give a 1440mAh for iPhone 5 full three times electrical reasons.

The conversion efficiency of the batteries directly determines the quality of mobile power. Generally, imported batteries discharge conversion rate is 85%, the domestic A product is about 75% -85%.

These are just to help users choose to move some of the key performance parameters of the power, but the mobile power markets varies greatly, virtual standard capacity, parameters such phenomena are endless, not only pay attention when buying parameters, reference should pay more attention to others experience.

 
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As people's living standards continue to improve, carry-in, more and more electronic products, such as notebook computers, tablet computers, mobile phones, digital cameras, portable DVD, PDA, MP3, MP4, GPS, and even warm equipment, medical care devices, to be used in batteries, but they often do not meet wife battery prolonged use of the device. And you can not put each device is equipped with a backup battery, not only costly and inconvenient. In order to solve this annoyance, mobile power emerged. With mobile batteries, the basic knowledge of how to care for it should be mastered. 

The first move is to reduce the power of the mechanical vibration, drop shock, not squeezed. Electrical products has always been not withstand the kind of throw touch, mobile power is no exception, a small mobile power batteries is actually a complex device, throw touch or squeeze at any time may break inside the components, especially some people like to readily Power on the move under the seat or on the nightstand, pressing books by various magazines, it is easy to damage the mobile power batteries

Ambient temperature is relatively stable, avoid high temperature, away from heat, it can not be stored in low temperature environments; avoid contact with metal materials, the occurrence of unwanted short circuit; Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the mobile power . Clear mobile power exterior stains cotton stick small amount of anhydrous alcohol scrub. 

Do not try to use fully charged, which is like the cell phone battery maintenance methods is the same reason. Mobile power charger for mobile phone battery life first, before you move to full battery power supply itself, in the process, try to avoid the charge has not been completed is interrupted, as this also sacrificed its life. 

Mobile power should always be used. Every once in a while for the mobile power to complete a full charge and discharge. Preferably once a month. The first time, because the power is sufficient to move about 50% of electricity can be used directly, for everyday use to avoid full release. Often use your mobile power, mobile power can maximize the life. If the long-term without mobile power, the best live storage, keep 50% charge state store best. Full power storage will reduce the service life, store the battery is not charged over discharge occurs, all of the mobile power disadvantage.

 
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Whether phone or other electrical battery, battery maintenance are the same. Maintenance of nickel-metal hydride battery, lead-acid and lithium ion, etc., but regardless of mobile and fixed, nor sub-brands or manufacturers.
The loss of speed and battery life depends on many factors, the quality and capacity of the battery is very important, as well as the intensity and frequency of use, maintenance if properly will affect battery life.

1 to avoid wrestling touch, especially careful not to squeeze. Electrical products has always been not withstand the kind of throw touch, mobile power is no exception, a small mobile power batteries is actually a complex device, throw touch or squeeze at any time may break inside the components, especially some people like to readily Power on the move under the seat or on the nightstand, pressing books by various magazines, please note that this is very easy to damage the mobile power batteries.

2 Note that the temperature and humidity. Surely we have had this experience, if the weather is wet, especially back to the south, home to the TV one open, the screen is a little blurry, colors will be distorted, and this is the impact of humidity for appliances. Of course, mobile power is no exception, so try to avoid extremes of temperature and humidity are too mobile power storage environment, if there is more humid weather situation, you can use it more frequently, in order to charge it, so it is a good protection Methods.

3 Do not try to use fully charged. This is like the cell phone battery maintenance methods, cell phone batteries generally do not advocate the case did not finish the charging is interrupted use of mobile power is also true. Mobile power charger for mobile phone battery life first, before you move to full battery power supply itself, in the process, try to avoid the charge has not been completed is interrupted, as this also sacrificed its life.

You can follow a few principles to use:
(1) do not fully charged Charging time (this is not very important, because a regular charger or charging on the computer is intelligent, full of the stop), especially the use of so-called universal charger or inferior charger .

(2) charging the battery, try to use a dedicated outlet, do not share the charger socket and the TV and other appliances, especially small-capacity outlet and this is not very important, because now the charger voltage fluctuation and less able to tolerate voltage charging.

(3) Do not expose the battery to heat or cold.

(4) Do not over-depletion of the battery, charging timely reminder charge, do not listen to the so-called special to completely discharge, then it will cause some irreversible loss, I have the painful lesson!

(5) make use of AC power. But not long-term without the battery.


GUANGZHOU SUNWITH CO., LTD
Add: 7/F, 48B Building, Tangshuiwei Second Area, Minzhi, Longhua, Baoan, Shenzhen, China.
Tel: +86-20-22038336  Fax: +86-20-83850615  E-mail: contact us