Mina, introduction to mobile charging power supply capacity and the actual number of relations

Time:2017/8/13 18:03:16

Believe very much have such confusion, clearly is to buy 10000 milliampere mobile power, but only 2500 ma phone charging to the battery capacity, often under three times, mobile power supply, no electricity, how did this happen? Whether manufacturers have empty mark capacity or other reasons? Spectrum and here small make up to you about this knowledge.
The real power

Current commercially available standard batteries of mobile power supply voltage is generally remain at around 3.7 V, so the movement of the 10000 ma power actual power is 3.7 V x 10000 mah = 37000 wh, and mobile phone charging voltage of 5 V, according to the law of conservation of energy, in the mobile power supply will output current booster for 5 V, the capacitance of mobile power supply is 37000 wh present 5 V = 7400 mah.

2. The conversion
Not the energy of the mobile phone at the end of 7400 ma here, in the process of mobile power supply for charging the mobile phone, the operation of the circuit board booster and security chip, and so on and so forth will loss of power, so the mobile power conversion rate, generally about 85%, according to the 85% computation, the mobile power supply the actual output of the maximum power of 7400 mah * 85% = 6290 mah.
3. Environmental impact and the wire wear and tear
Then mobile phone can get the electricity is not above the 6290 mah, because of the effect of air humidity and temperature environment, mobile power supply for mobile phone charging process will also be part of the loss, and the data line itself in the process of transmission energy also because resistance and loss of power, so will eventually reach the phone will power is lower than 6290 mah.

4. Mobile phone itself step-down
The power and mobile phone batteries as also remain at around 3.7 V power supply, so the mobile power transmission over power in mobile phone itself a step-down treatment, this process is without a doubt will lose part of electricity, which is why many phones get hot when charging.
5. Mobile phone running state
In addition to the decompression, mobile phone in the process of charging status may also affect the actual charging of mobile power supply. If in the process of charging, the phone is playing game, watching video, listening to music, reading a novel high power consumption status, will further affect the mobile power supply for the number of mobile phone charging; If the phone is in daily standby mode, the actual number of charging also has certain influence. Ideal state is to turn it off charging, but small make up charging believe that not many people will shut down!

Believe see you already know this mobile power for charging the mobile phone is not only a simple volume divided by volume, but a lot of people will go wrong, since all the mobile power supply need to experience the appeal process, so the greater the capacity of the higher conversion rate of mobile power supply must have better and more practical.
?Myth of choose and buy mobile power

But in fact it is not like this, we move apart from power supply only as backup power urgent need, the huge capacity mobile power supply itself determines the recharge it's a long thing, and the capacity, the greater the corresponding to the charging time is longer, if in order to catch the time for the base part of the electricity charge, it is better to choose a smaller capacity is more suitable. Say conversion, in order to ensure the safety of products and users of large manufacturers will be in the mobile power supply circuit boards and some necessary safety components, even if it means sacrifice part of the conversion, and some manufacturers in order to increase the product's stunt, tend to remove all necessary protection parts, safe hidden trouble.
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