What Are The Pros And Cons Of Li-ion Batteries?

- Aug 13, 2018 -

What are the pros and cons of li-ion batteries?

Rechargeable batteries have a long life and can be recycled more than 1,000 times. Although they are more expensive than dry batteries, they are more cost-effective if used frequently. Rechargeable batteries have a lower capacity than comparable alkaline manganese or zinc carbon batteries, for example, and discharge more quickly.

Another drawback is that because of their near-constant discharge voltage, it is difficult to predict when discharge will be end up. When the discharge ends, the battery voltage drops suddenly. If you use the camera, all of a sudden the battery dies, and you have to stop. But rechargeable batteries, on the other hand, can provide more capacity than too much of a primary battery. However, li-ion batteries can be widely used in photographic equipment because of their high capacity, high energy density and gradually reduced discharge voltage with the increase of discharge depth.

in short words, it can be sum up with 7 points list as below:

1) high voltage

The working voltage of a single-cell battery is as high as 3.7-3.8v (for lithium iron phosphate, 3.2v), which is three times that of the ni-cd and ni-mh batteries.

2) larger than energy

The actual specific energy achieved is about 555Wh/kg, that is, the specific capacity of the material can reach more than 150mAh/g (3--4 times that of ni-cd, 2--3 times that of ni-mh), which is close to about 88% of the theoretical value.

3) long cycle life

Generally more than 500 times, or even more than 1000 times, lithium iron phosphate can reach more than 2000 times. For low current discharge electrical appliances, the battery life, will multiply the electrical competitiveness.

4) good safety performance

No pollution, no memory effect. As the predecessor of li-ion

Of lithium battery and dendrite short circuit formed by the metal lithium is easy, reduced its areas of application: Li - ion in do not contain cadmium, lead, mercury and other elements of environmental pollution: some process (such as sintering type) of the one big drawback of Ni - Cd battery exist for "memory effect", it severely battery, but Li - ion this aspect of the problem doesn't exist.

5) self-discharging small

The self-discharge rate of li-ion, which is charged at room temperature and stored for 1 month, is about 2%, much lower than 25-30% of ni-cd and 30-35% of ni-mh.

6) quick charging

The 30-minute capacity of 1C charging can reach more than 80 percent of the nominal capacity, and the phosphorus iron battery can reach 90 percent of the nominal capacity in 10 minutes.

7) working temperature

Working temperature is 25 ~ 45 ° C, with the material improvement of the electrolyte and the anode electrode, lithium ion battery working temperature can be expected to widen to - 40 ~ 70 ° C.

in a conclusion, the above information is theory knowledge for you to have better understanding of lithium ion batteries in both aspects. if you have any specified thoughts, requirement or request, welcoem to discuss with our sales engineer.