advantage:

　　 1. The working voltage of the single battery is as high as 3.6v~3.8v, which is much higher than the 1.2V voltage of nickel-metal hydride and nickel-cadmium batteries.

　　 2. Large capacity density, its capacity density is 1.5~2.5 times of Ni-MH battery or Ni-Cd battery, or higher.

　　3. The self-discharge is small, and the capacity loss is small after being left for a long time.

　　4. Long life, the cycle life can reach more than 500 times in normal use.

　　 5. There is no memory effect, no need to empty the remaining battery before charging, easy to use.

　　6. ​​Good safety performance

　　The polymer lithium battery adopts aluminum-plastic soft packaging in structure, which is different from the metal shell of the liquid battery. Once a safety hazard occurs, the liquid battery is easy to explode, and the polymer battery can only blow up at best.

　　7. Small thickness, can be made thinner

　　 Ultra-thin, the battery can be assembled into a credit card. Ordinary liquid lithium batteries use the method of customizing the shell first, and then plugging the positive and negative materials. There is a technical bottleneck when the thickness is less than 3.6mm. Polymer batteries do not have this problem. The thickness can be less than 1mm, which is in line with the current demand for mobile phones. .

　　 8. Light weight

　　The battery using polymer electrolyte does not require a metal shell as a protective outer packaging. The weight of the polymer battery is 40% lighter than the steel shell lithium battery of the same capacity specification, and 20% lighter than the aluminum shell battery.

　　 9. Large capacity

        Polymer batteries have a capacity of 10-15% higher than steel shell batteries of the same size and 5-10% higher than aluminum shell batteries. They have become the first choice for color screen mobile phones and MMS mobile phones. Nowadays, most of the new color screen and MMS mobile phones on the market are also used Polymer batteries.

　　10. Small internal resistance

        The internal resistance of polymer batteries is smaller than that of ordinary liquid batteries. At present, the internal resistance of domestic polymer batteries can even be below 35mΩ, which greatly reduces the self-consumption of the battery and prolongs the standby time of the mobile phone. Level in line with international standards. This kind of polymer lithium battery that supports large discharge current is an ideal choice for remote control models, and it has become the most promising product to replace Ni-MH batteries.

　　11. The shape can be customized

　　 The manufacturer is not limited to the standard shape, it can be economically made into a suitable size. The polymer battery can increase or decrease the thickness of the battery core according to the needs of customers, and develop new battery core models, which are cheap and short in mold opening cycle. Some can even be tailored to the shape of the mobile phone to make full use of the battery shell space and improve the battery. capacity.

　　 12. Good discharge characteristics

　　 polymer battery uses gel electrolyte, which has stable discharge characteristics and a higher discharge platform than liquid electrolyte.

　　 13. Simple design of the protection board

　　Because the polymer material is used, the battery cell does not catch fire or explode, and the battery cell itself has sufficient safety. Therefore, the protection circuit design of the polymer battery can be considered to omit the PTC and fuse, thereby saving battery costs.

  shortcoming:

　　 1. The battery cost is high, and it is difficult to purify the electrolyte system.

　　2. Need to protect the circuit control, overcharge or overdischarge will destroy the reversibility of the battery's internal chemical substances, which will seriously affect the battery life.