At present, the market full of beautiful things in eyes of the charger, the charger the limitation of its structure characteristics, the broad masses of consumers in the choose and buy the charger when it is difficult to identify its quality is good or bad, but you can pay attention to the following:


(1) to fall within the scope of "CCC" certification of charger products, should choose to have "CCC" certification of the product.Information technology equipment and audio-visual equipment machine with the charger since August 1, 2003, has been the national compulsory certification scope, reason should be confirmed before buying products with "CCC" logo, if possible in the related website as far as possible the certificate of authenticity and validity.


(2) check the charger.Qualified product will consist of rated input voltage and rated voltage range, rated power of the nature of symbols, rated frequency or frequency range, rated input current, manufacturer name or trademarks, product model, the partial products would also include n class symbols, safety instructions and other information, identify the handwriting should be clear, not easy to erase.Consumers should not buy all foreign signs charger products.


(3) with the matched charger.Before the choose and buy the charger need to know the basic information of the battery or the whole machine, the choose and buy the charger output must be compatible with the rated parameters of the machine.


(4) check the contact of charger, plugs and interface.Contact of charger, plugs and interface should be bright and clean without rust, plug in line with national standards.In addition, the interface and the alignment of the machine is very important also, avoid by all means choosing charger interfaces too loose or too tight, loose interface makes the machine to receive the current is not stable, are likely to form a larger current, cause damage to the machine.While interface too close is not easy to plug interface or even damage.