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Jan 10, 2013

What is the purpose of the purchase of mobile power? Can provide longer battery life is to find a product. Of course, the greater the capacity, heavier weight, which is proportional mobile power charger for iphone to, because the battery itself is a virtue, so buy large-capacity phone mobile power, you need to consider carefully. Why is the capacity the better it? Judgment is based on actual output capacity of mobile power. Recognized by the mobile power conversion rate formula: (mobile power capacity * 3.7V * conversion percentage) / 5V, such as a 5000mAh capacity portable mobile power, standards conversion rate of 85%, then 5000 * 3.7 * 0.85 / 5 = 3145mAh, Apple mobile phone battery standard capacity 1420mAh, can charge about 2 and a half times around. So the greater the capacity, the actual output of the greater capacity. Note: Why divided by 5, the output voltage is 5V, if your output voltage is 3.7V, then is divided by 3.7. During this raises an important concept: mobile power conversion rate. The conversion rate refers to the batteries output to mobile phones or digital devices, because the internal resistance caused some loss to be less than the marked capacity of the batteries, the output capacity of the Li / nominal capacity * = conversion rate in the middle. Nominal capacity, what is it? Generally refers to the nominal capacity of the batteries, the battery capacity is calculated based on the volume of the battery, L * W * D, then the capacity of the batteries can be estimated based on a coefficient value , but this is not accurate, the battery through a fine processing can be increased to about 200-300mAh. Present, mobile power conversion rate is generally about 85% can be regarded as relatively good, high can reach between 90% -93%, relatively rare, there might be only official data, for reference only. The conversion rate is mainly influenced by the mobile power the PCBA protection board. Buy mobile power supply to the second principle: the brand of batteries. Mobile power batteries are generally divided into two types, one is 18650, the major manufacturers are Sanyo, ATL, Samsung SDI, mobile power a lot is to do 18650, 18650 battery is notebook that. In addition, the polymer lithium battery industry called soft pack. Polymer battery industry sector is relatively well-known the ATL (Dongguan New Energy), BAK, B & K, the work of God, BYD fact, polymer many, we can search, you can find a list of some. Relatively fair to say that on a well-known manufacturers and two manufacturers, capacity, quality does not have a big gap, but there is a certain difference in the defect rate generated by the production process. The same ingredients may line manufacturers defect rate is 1%, may be the second-tier manufacturers will reach 5%, which is possible. mobile power pack Distinguish between the two batteries? Actually very simple, can be distinguished according to the phone mobile power appearance on, 18650 is cylindrical and steel, so did not have to change the thickness, while the soft polymer bag can be any shape, can be very thin, and we can use this rule to judge, flat type, personality, are generally lithium polymer batteries, bulky, very thick basically 18650 18650 lithium polymer Portable mobile power pack battery advantages and disadvantages? 18650 mature production of Arts, the capacity of the single largest possible 3400mAh generally 2000mAh, 2600mAh existence of security risks is likely to burst, notebook battery bombings, is a Ming patients, but to declare that the probability of this is very small, unless it is used some of the disassemble 18650 battery. Advantage of the soft package customize a variety of shapes, lithium polymer battery safety hazards, the leakage, short circuit expansion pack, the most serious situation is to produce combustion. Another parameter NOTES several phone mobile power to explain to reference: 1, overcurrent protection: no choice in this voltage, mainly taking into account the general are 220V voltage charger voltage is constant, if the voltage is too high, the current strength naturally bigger, according to the computer reported before the recommended data 3A is a good number, the time of purchase, you can view this parameter, as much as possible to ensure the safety of mobile power. 2, can charge cycles: In general lithium battery charge and discharge times is about 400-500 times to charge it once a day, then, is that you can use year, there are good batteries in about 800-900 times, but in the this data, the lithium battery has basically day curtain Xishan, greatly reduced performance.

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Posted: Thursday January 10, 2013, 9:53 pm
Tags: power mobile packbusinesstechnology [add/edit tags]

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Wenfeng Z.
male, age 27,
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