用万能充电器给手机电池充电好不好（Use a universal charger for mobile phone battery is good）.docVIP

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用万能充电器给手机电池充电好不好（Use a universal charger for mobile phone battery is good）.doc

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用万能充电器给手机电池充电好不好（Use a universal charger for mobile phone battery is good）

用万能充电器给手机电池充电好不好（Use a universal charger for mobile phone battery is good） At present, the most common types of mobile phone batteries are (Li-ion) lithium-ion batteries, lithium polymer ultra-thin batteries, NI-MH nickel metal hydride batteries. The battery threshold for different types of batteries (signs are full / full voltage) is different, in which lithium-ion batteries are divided into 3.7V/4.3V and 3.6V/4.2V. And the universal mobile phone charger on the market is said to be better compatible with (Li-on) lithium-ion batteries. The reporter interviewed some people in the field. They generally questioned: universal mobile phone charger and constant circulation of constant charge standard, different rated capacity of the battery charging current, the maximum not more than 1C (C is the battery capacity is 500mAh and 1300mAh), the battery can be used as the current charge? Of course, there are now more advanced fast charging methods (such as -DV/DT), with good compatibility. But in order to produce qualified products, you must use a dedicated chip and detection circuit, so that the total cost of the product is not 100 yuan, do not want to win. Those who sell tens of dollars (the actual cost is less than 10 yuan) of the universal mobile phone charger uses what new technology can automatically provide suitable current and suitable threshold voltage depending on the battery, so as to achieve universal functions? Its really suspicious! ! Carefully studying the universal mobile phone charger, we found that it has only two output lines, and we know that the designed charger has at least three lines of output. Two of the batteries are generally data feedback lines and temperature and alarm lines, most of the lithium-ion batteries have protective circuits inside, and even smart management chip. Only two output lines means that the charger gives up the protective circuitry that the battery itself has. Only in this way can we realize cheap omnipotent Many of the chargers