1. What's lithium battery?

Lithium battery is a type of battery that consists of lithium metal or lithium alloy as positive/negative electrode materials and uses a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and its safety, specific capacity, self-discharge rate and performance-price ratio are superior to lithium-ion batteries.

 

2. What's lead-acid battery?

A lead-acid battery is a battery in which the electrode is mainly made of lead and its oxides, and the electrolyte is a sulfuric acid solution. In the discharge state of a lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charged state, the main component of the positive and negative electrodes is lead sulfate.

 Lead Acid Replacement

 

3.The difference?

 

3.1 Weight energy density

 

At present, the energy density of lithium batteries is generally 200~ 260wh/g, and lead-acid is generally 50~ 70wh/g, so the weight energy density of lithium batteries is 3~ 5 times that of lead-acid, which means that under the same capacity, lead-acid batteries are 3~ 5 times that of lithium batteries, so lithium batteries have an absolute advantage in the lightweight of energy storage devices.

 

3.2 Bulk energy density

 

The volume capacity density of lithium batteries is usually about 1.5 times that of lead-acid batteries, so under the same capacity, lithium batteries are about 30% smaller than lead-acid batteries.

 

3.3 Use cycle

 

At present, the more popular material systems of lithium battery are ternary and lithium iron. The number of cycles of ternary power lithium batteries is usually more than 1,000 times, the number of cycles of lithium iron phosphate batteries is more than 2,000 times, and the number of cycles of lead-acid batteries is usually only 300 to 350 times. So the service life of lithium batteries is about 3-6 times that of lead-acid batteries.

 

3.4 Price

 

At present, lithium batteries are more expensive than lead-acid in price, which is about 3 times that. However, combined with the service life analysis, the same cost is invested, and the service life of lithium batteries is still longer.

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3.5 Applicability

 

Because the safety of lithium batteries is slightly worse than that of lead-acid batteries, it is particularly important to choose high-quality lithium batteries and a professional R & D team. Here I recommend Bypower, a lithium battery pack manufacturer from China with a professional R & D team with more than ten years of experience,they can support you ODM &OEM service, customized battery products like solar energy storage; In other way, the current temperature of lithium batteries The applicability is also very good, so in other aspects of adaptability, lithium batteries are not inferior to lead-acid batteries.

 

6. National Policy

 

The harm caused by lead-acid batteries to the environment due to production links or waste batteries is quite serious, so from the perspective of national policy guidance, the expansion of reinvestment of lead-acid batteries has been restricted, or the use of lead-acid batteries has been restricted in some areas. The trend of replacing lead-acid batteries with lithium batteries will become more and more obvious, and the progress will gradually accelerate.