How to choose a good moble power bank?

1.The quality of the batteries is the foundation of a good power supply.

Batteries is the heart of the mobile power supply which is like a car engine, it is the source of all power. Without a strong heart, there is no strong body. If the car hasn't a reliable automotive engine which will be weak-high quality batteries just can make an excellent mobile power bank!

Common rechargeable batteries are usually the following two categories: Ni-H batteries, Li-ion battery; Although the Ni-H battery costs are lower, but because it has the memory effect, it must discharge before charging, or charge capacity will decrease, and it has not used; While the latter Li-ion battery has no memory effect, larger capacity, use safer, is now widely used at present. It is as three times energy as the existing Li-ion battery, which is the latest generation Li-ion batteries. Because of the solid electrolyte instead of liquid electrolyte, compared with the liquid lithium ion battery, polymer Li ion battery has a thin shape, can be made of any size and any shape, etc. Also it won’t produce leakage and combustion explosion safety problem. The technical of Cylindrical batteries (18650) is low at present, many small workshops in domestic can product them, battery's quality has good while bad, the price also from each 5 yuan to 30 yuan. The disadvantages of the products are artificially high capacity: nominal each battery capacity is 2500mAh, actual may be less than 2000mAh; Another disadvantage is the battery decay quickly, such as the original 4800 mAh Y brand products, normal use after half month, capacity attenuation to about 60%. Outstanding performance is first lamp support for a long time, the power indicator light will soon be followed by rest lights. Because people usually like to keep the mobile power full state, so the phenomenon of capacity attenuation is not easy to find, gives undesirable businessman an opportunity.

EZER mobile power bank adopt polymer lithium-ion battery production by ATL company (ATL, Japan's SANYO, South Korea's Samsung, SDI are eponymous batteries manufacturer, and supply for Apple and other international brands). And it is 100% authentic new batteries (no teardown old batteries), the most reliable guarantee to you!

2.The good quality of the circuit is the soul of a good mobile power supply.

Has the good batteries, also must have associated with each input and output circuit to realize its function, that's a good horse matchs good saddle. To avoid obscure jargon, let us use the most obvious language to explain the following principles.

Firstly, don't blindly pursue small and exquisite, Smaller means that performance degradation.

Because in order to reduce the volume, the manufacturer change with the poor performance components. Someone asked, why not use the same performance but smaller components? Please consider in reverse, at the time of design, if you can do the volume is small, why need a big volume? Performance must be in order to ensure certain parameters, the larger components must be used. It's like your BMW 745 capacity is 4.5 L, your engine is bigger than the santana displacement of the 1.8 L engine; If you want to put your engine done as small, I'm afraid your car is soft weakness.

Secondly, Look for the output current. 3A output is guaranteed.

Talk the current is too difficult to understand, let's talk about water flow instead. Top floor people always complain about the water flow in home faucet is smaller than the first floor; Current is the same reason. Charging current is small, the device will "do not have enough to eat." If they do not have enough to eat for a long time that will be malnourished, and the equipment under the condition of the current lack of charging for a long time will damage. Someone may refute me, now on the market of mobile power banks are 1A output, and most smartphones input current are just 1A. I answer two points: one is: usually written in the manual are maximum, rather than the average value; Moreover,When the general quality of mobile power supply on the peak at work, stable voltage is not usually on the 5 V, but only 4.8 V or lower, such as low voltage caused by the "do not have enough to eat" situation will seriously damage your beloved device. Second: How much current is your computer need? Ipad is 1.5A, you dare to take 0.8 A power supply to charge it for A long time?

Thirdly, protect function.

As you know, want to wear your seat belt drive. Protect circuit is as the same, it does not work at ordinary times, as if it is not necessary. But once meets emergency protection circuit will immediately help you resist the harm, to avoid equipment failure.

Short circuit protection, over charge/discharge protection, temperature monitoring and protection, EZER- comprehensive protection to you!

3.The quality of the shell is the guarantee of a good power bank.

Shell besides beautiful, more important is to protect the internal components from being damaged. Shell of mobile power supply is particularly important.

Circuit in use will be heat, metal shell is of great help to heat dissipation; At the same time, if the circuit is poorly designed, calorific value is big, metal shell will heat exposure circuit faults.