Lithium power battery is a rechargeable battery that uses lithium ions as the positive and negative electrode materials. It uses the insertion/extraction process of lithium ions between the positive and negative electrodes to store and release electrical energy.

The characteristics of lithium power batteries are as follows:

The working voltage of a single battery can reach up to 3.7V, which is three times that of nickel cadmium batteries, nickel hydrogen batteries, and nearly twice that of lead-acid batteries. This is also an important reason for the high specific energy of lithium power batteries. Therefore, when forming a power battery pack with the same voltage, the number of series connections used for lithium power batteries will be much fewer than lead-acid batteries and nickel hydrogen batteries;

2. It is lightweight and has a high energy density of up to 150Wh/Kg, which is twice that of nickel hydrogen batteries and four times that of lead-acid batteries. Therefore, its weight is one-third to one-quarter that of lead-acid batteries with the same energy;

3. Small in size, up to 400Wh/L, with a volume that is half to one-third of lead-acid batteries. Provided design conditions, design space, and possibilities for a more reasonable structure and more aesthetically pleasing appearance;

4. Long cycle life, with up to 1000 cycles. Based on a capacity retention of 60%, the battery pack can achieve over 600 cycles of 100% charge and discharge, with a lifespan of 3-5 years, which is about two to three times that of lead-acid batteries;

5. Low self discharge rate, less than 5% per month;

6. The working temperature range is wide and the low-temperature performance is good. Lithium power batteries can operate between -20 ℃ and+55 ℃, especially suitable for low-temperature use. However, aqueous batteries (such as lead-acid batteries and nickel hydrogen batteries) have significantly reduced performance at low temperatures due to poor electrolyte fluidity;

7. No memory effect, so there is no need to discharge before each charge like nickel cadmium batteries and nickel hydrogen batteries, and charging can be done anytime and anywhere. The depth of battery charging and discharging has little impact on the lifespan of the battery, and can be fully charged and discharged. Our cyclic testing is full charge and full discharge.

In summary, lithium power batteries have the characteristics of high operating voltage, high energy density, small size, light weight, long cycle life, low self discharge rate, wide operating temperature range, and no memory effect. They are widely used in military and civilian small electrical appliances, such as mobile phones, portable computers, cameras, and electric vehicles, artificial satellites, aerospace, and energy storage fields.