How many kinds of charger are on the market

Charger are currently mainly divided into mobile phone charger and travel charger, dock charger, car charger available on the market,the differences in performance indicators depends on where and how to use.

Docking charger. such chargers are generally designed to be dual-slot, which can charge two batteries, in addition to allowing users to charge the battery on the phone being used, but charge another. However, the charging time of a docking charger mostly with slow charge mode is longer, about 4 to 5 hours.

Travel Charger. The standard configuration of most mobile phone is travel charger. Travel charger and seat charger for charging a battery effect is the same,which is easy to carry and more appropriate for those who frequently travel abroad , it is generally fast charge mode, charging time is 2 to 3 hours. Travel charger dose not make any adverse effects on the mobile phone, but the user must confirm that it is the original charger when purchasing.

Car Charger. Such charger can easily charge the phone in the car. One end of the car charger is plug into the cigarette lighter, and the other end is connected to the phone, the phone should not be charged in the car for a long time because of the car closed with a high temperature, otherwise it will cause damage to the phone.

The original travel charger and seat charger adopt protect circuits or switch road design for the protective effect for rechargeable battery, while fake and shoddy charger without protected circuit is easy to burned or even burn the phone, choose the original travel charger and away from knock-off.

"Auto resolution lithium or NiMH batteries"is a apparent key to identity a charger,which can automatically distinguish two different battery charger in case of "the discharge of lithium malfunction".If you accidentally press the "release pushbutton" on dock charger when charging lithium batteries, a good charger can identify lithium battery, it will not make a discharge operation; poor cradle will result in the impairment of lithium battery life. A good charger with protection settings and charging voltage standard does not overshoot or be unsaturated.

For more information about the charger，please visit http://www.onu-mall.com/catalog/cable--amp--adapter---charger/
Article from http://blog.onu-mall.com/index.php/2015/09/28/how-many-kinds-of-charger-are-on-the-market/

How to discern a charger

How to discern the charger depends on how its work performance, safety requirements and electromagnetic compatibility is.

      

Different types of batteries have different charging requirements, the parameters of a charger are mainly charging method, charge current, charge voltage.

(1) Charging method: how to charge is based on the constant voltage or constant current. Given the current lithium-ion battery, charger charging current with limiting constant voltage mode shall be adopted, that is, charging at constant voltage automatically converted when the charging at limited current to the limited voltage.

(2) Charging current: specifies the maximum output current of the charger. The size of the charging current shall be applied to the size of the battery capacity, generally should not exceed 1C5A.

(3) charging voltage: specifies the maximum output voltage of charger.The charging voltage is depends on limit voltage of battery charged; when charging the lithium-ion battery with nominal voltage of 3.6V, the maximum output voltage of charger required is typically 4.2V (in fact, the phone is equipped with a lithium-ion battery with protection device, so the charger output voltage can also be slightly higher than 4.2V, but the voltage is not more than 4.5V in order to ensure safety).

2. Safety requirements

Popular terms is to ask the circuit structure, mechanical structure and electrical properties of the product shall comply with certain safety requirements, regardless of the product in a normal or abnormal operating state (such as output overload or short circuit, the internal component failure or circuit failure, etc.) work state, must not endanger the safety of persons and property. To achieve this purpose, the charger product safety requirements (such as electric shock protection performance, insulation performance, temperature, etc.) shall comply with the requirements of China mainland’s compulsory standards as specified in GB4943-2001.

3, electromagnetic compatibility

For chargers products, the electromagnetic compatibility requirements mainly reflects in electromagnetic harassment. Electromagnetic disturbance is divided into conduction harassment and radiation harassment. the many advantages of switching power supply contribute to the switching power supply circuit for universal charger. But the switching power supply of high-frequency switching devices produces high-frequency harmonic signals. These high frequency signals propagate through the power terminal via the grid or via space radiation result in the electromagnetic pollution to the environment, troubling the work around electronic devices,even may cause serious adverse effects on human health and the safe operation of the grid. Therefore, in order to reduce the electromagnetic pollution to the environment, the power terminal (or interface terminal) disturbance voltage for the electronic products working and radiation disturbance field strengths shall be less than a certain limit. For mobile phone battery charger,the disturbance voltage and disturbance field strength must comply with the requirements of the China mainland’s mandatory standards GB9254-1998 Class B limits.

For more information about the charger,please visit http://www.onu-mall.com/catalog/cable--amp--adapter---charger/
Article from http://blog.onu-mall.com/index.php/2015/09/28/how-to-discern-the-charger/