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For mobile power batteries, many people are always on the capacity of the hero, but in the mobile power market environment is complex, has not yet developed a unified standard under the premise, although the capacity is very important, but the quality of batteries, security is more critical. The current mobile power batteries generally use 18650 lithium-ion batteries and lithium polymer batteries two, the best choice for polymer batteries battery, high security, and relatively long life. At present, the polymer batteries are more professional protoss rankings, all models are queryable numbered polymer batteries, and the volume of the volume than the average polymer is also 15% higher, from no security problems.

First is compatibility.
The difference in the scope of application - not every mobile power can give your phone a reasonable charge. We first look at the mobile phone tablet and other smart devices to charge some of the requirements and charging parameters.
In addition there are some domestic mobile phone charging current of 08A, 0.7A, that is different devices have different current requirements, if not required parameters to the device charging is a security risk, and even permanent damage to equipment.
If the resistance inside the mobile power supply and the circuit board is not the same, or not through the national test, the quality is difficult to guarantee that the process of poor mobile power circuit board is usually only a simple boost system, simply the battery voltage 3.7V To 5V without any protection circuit.
Such a simple circuit, the current output is unstable, there may be our digital equipment battery burst, there may be inside the phone board caused by short circuit, so burn the circuit board.
Followed by overload overpressure protection.
The precision boost ICs provide an efficient and safe current matching scheme. When the load is connected to the fast charge port, the boost IC can immediately detect the maximum acceptable current of the load and then provide the optimum output current for the load. This can be done in the fast charge mode for the load, maximizing the protection of the battery from excessive current damage.

In fact, the use of mobile power in the process, if the use of the use of the environment is not appropriate, may also cause unexplained overcurrent, over-voltage short-circuit situation, good workmanship mobile power can be built-in temperature sensor chip, when the cell temperature exceeds Set the value, turn off the circuit, which through the internal protection circuit to effectively protect the mobile power and rechargeable battery security.
There is also a mobile power overrun protection.
The power supply circuit board with voltage intelligent detection system can achieve this function - when the mobile power supply voltage is lower than its overdischarge voltage detection point will activate the over discharge protection, automatically stop the discharge, so as to avoid excessive discharge affect the mobile power life, or even Will burn out mobile phones and other digital products.
Finally, the power conversion rate of the problem.
Power conversion rate: that is, the battery standard capacity and the actual mobile phone and digital equipment to charge when the full output percentage. The quality of mobile power mainly depends on the energy conversion rate, good quality generally up to about 80%, the general is about 70 to 75%, poor or even only 30%, such as the conversion rate of less than 75% means that the mobile power lines Loss of large, the heat of the batteries themselves is also large.
On the mobile power conversion rate is the most important role is the "mobile power protection board", so if a mobile power PCB circuit board with a good workmanship and design, while using the battery is also relatively good, and has a solid Protection circuit, then the quality of this mobile power has been guaranteed.