iPhone charging process is performed by the collaboration of three parts, namely: iPhone power adapter or iPhone charger, data cable, iPhone. Subjective factors including the phone itself,iPhone power adapter or iPhone charger, and a data line and objective factors including the weather and how to use the iPhone are the key factors impacting on the rate of charging the iPhone.
The larger the capacity of the iPhone battery, the longer the charge time
We shall firstly figure out how to calculate the charging time before what make a impact on the speed of charging the phone, the charging time can be calculated with a simple formula: Charging time = factor (typically greater than 1) × battery capacity (mAh) / charging current (mA) . That is the Large-capacity iPhone battery charging time corresponding to the long charging time when the charge current is constant; similarly, small capacity battery corresponding to a short charging time.
Thus, it is necessary to charge more prolonged electricity for our phones in order to meet the needs of using iPhones for a long time when charging current is kept constant as the iPhone manufacturers increase capacity .
Moreover, in practice, the current is based on the load (ie iPhone) connected. Just within the limits of its resources,the iPhone charger can provide much current the phone needs. If the current required by the phone exceeds the current limit the iPhone charger can provide, then the cell phone charger would have been outputting the maximum current. So when the battery capacity is the same, the charging time will be faster as the current the phone itself can carry increases.
Power adapter charging specifications affect the charging rate
The output voltage of most brand mobile phone standard charger is currently standard 5V, but the output current which would be equipped with by the manufacturers depending on the battery capacity are different. Assuming the assumptions voltage is same , the difference between 0.5A, 1A and 2A cell phone charger just like bicycle single-lane, two-lane and four-lane highway- a charged battery is also be doubled as current is per doubling over the same time. So for iPhone charger with a maximum only 1A output charging iPad and 2A original charger charging iPad, the former theory charging time is 2.1 times the latter.
Therefore, when charging the iPhone, you should try to choose the original iPhone charger or those whose output current is not less than the original standard charger in order to ensure that the phone’s charging speed is fast enough,.
The data line with poor quality is the”murderer” slowing the charging time
Generally it is too difficult to identify a clear difference from the appearance of the data lines, so all the interface mixed like a routine, but the current provided by different data lines may be different.
Many low-cost data line looks very thick, but its internal core is actually pretty thin, or those meant to be made by pure copper wire replaced by aluminum wire are knock offs. In addition, poor quality data cable connector contact material and welding may be abnormal, these problems will lead to increased resistance, standard data line resistance should be 0.5 ohms, while the poor line may reach 3 to 6 ohms, the charging efficiency decline definitely in 6 fold to 12-fold.
Easily overlooked weather
It is because the winter is too cold that the phone unable to be fully charged or charged. Because the lithium battery most smartphone uses features with protection mechanism in extremely low temperature resulting in the deposition of metal lithium which would be no longer react chemically with substance, leading to a short circuit inside the battery, that is why the phone could not be fully charged or charging speed is very slow. When the temperature is too high, this issue will appear.
Apple said that the 22 ℃ room temperature is most beneficial to iPhone charging,so do the Android phones using the same lithium situation. When the temperature is too low, we need to remove the cell phone to the warmer environment,the cell phone would not be normally charged until the lithium battery temperature exceeds the low temperature protection threshold (iPad, laptops, etc. is generally 5 ℃, the cell phone is generally about 0 ℃), when the battery is hot, you could remove the cell phone case or place it on a cold table to increase the charging speed. Therefore, the temperature is a more important external factor making affect on the rate of phone charging, proper temperature helps improving charging speed of mobile phone.
The proper charging techniques can help increasing the charging rate
Lithium battery would start lithium battery protection when it is running out of power, the phone can not boot, the charging time is longer. Charged cell phone batteries need to wait a long time to wake up, shutdown protection function. So try not to remind charging until the battery runs out.
As we all know, various programs running consume power after the iPhone is switched on, it will naturally drag the “charge rate”. So you would better turn off the App and the phone screen. Of course, it would be able to more power if we can shut down or transferred to “flight mode”, the charging speed is even faster.
In addition, some like charging via computer USB charging port,which takes longer to charge by comparison with on the charging in the outlet. Under normal circumstances, the maximum output current of computer front USB port is only 0.5A, the charging speed is very slow. If you have to use a computer USB interface to charge, you can use the computer rear USB port because its current is more stable than the front port, the charging speed of mobile phone is relatively slightly faster.