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The differences between batteries and lead-acid storage batteries

  • Time of issue:2025-09-29
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(Summary description)At present, the energy density of lithium batteries is 200-260h/g, while that of lead-acid batteries is 50-70h/g. Therefore, the weight energy density of lithium batteries is 3 to 5 times that of lead-acid batteries. This means that under the same capacity, lead-acid batteries are 3 to 5 times that of lithium batteries. Thus, lithium batteries have a significant advantage in energy storage technology.

The differences between batteries and lead-acid storage batteries

(Summary description)At present, the energy density of lithium batteries is 200-260h/g, while that of lead-acid batteries is 50-70h/g. Therefore, the weight energy density of lithium batteries is 3 to 5 times that of lead-acid batteries. This means that under the same capacity, lead-acid batteries are 3 to 5 times that of lithium batteries. Thus, lithium batteries have a significant advantage in energy storage technology.

  • Time of issue:2025-09-29
  • Views:
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The advantages and disadvantages of lithium batteries and lead-acid batteries are compared from the following aspects:


1. Weight energy density
At present, the energy density of lithium batteries is 200-260h/g, while that of lead-acid batteries is 50-70h/g. Therefore, the weight energy density of lithium batteries is 3 to 5 times that of lead-acid batteries. This means that under the same capacity, lead-acid batteries are 3 to 5 times that of lithium batteries. Thus, lithium batteries have a significant advantage in energy storage technology.


2. Volume energy density
The relative volume density of lithium batteries is usually, so under the same capacity, the volume of lithium-ion batteries is 30% smaller than that of lead-acid batteries.


3. Usage cycle time
Currently, the popular raw material management systems are ternary and lithium iron phosphate. The frequency of the ternary power lithium-ion cycle system is generally over 1,000 times, that of the lithium-ion phosphate battery cycle system is over 2,000 times, and that of the lead-acid battery cycle system is only 300 to 350 times. Therefore, the lifespan of lithium-ion batteries is 3 to 6 times that of lead-acid batteries.


4. Price
At present, lithium-ion batteries are about three times more expensive than lead-acid batteries. However, with the same analysis of the usage cycle and capital investment cost, the application cycle of lithium-ion batteries is still longer.


5. Applicability
As the safety factor of lithium batteries is slightly lower than that of lead-acid batteries, it is necessary to apply them well in various safety protection work, such as avoiding damage to lithium batteries caused by external forces or safety accidents, as this can lead to fires or explosions. At present, the acceptability of lithium batteries is also very good, and lithium batteries are no less than lead-acid batteries.


6. Policies of our country
Due to the fact that lead-acid batteries are in the production stage or waste rechargeable batteries are severely damaged by the natural environment, the development trend of lithium-ion replacing lead-acid batteries will become increasingly obvious and accelerate further.


The differences between lithium batteries and lead-acid batteries:


Durability: Lead-acid batteries are generally deeply charged and discharged within 400 times, have memory, and can be used within two years. Lead-acid batteries contain liquid, and rechargeable batteries need some time and must be fully filled with liquid. Lithium batteries are different. Their durability is stronger than that of lead-acid batteries, and they are less expensive. Deep batteries can be charged and discharged more than 500 times, and they have no memory effect. Generally, their lifespan is 4 to 5 years.


2. Volume and mass: Lead-acid batteries have a relatively large volume. The net weight is usually 16 to 30 kilograms. Conversely, the net weight of lithium-ion batteries is usually much lighter than that of lead-acid batteries, with the majority being between kilograms and kilograms. And not much. It's very easy to transport


3. Production and manufacturing process: Lead-acid batteries cause environmental pollution during the production and manufacturing process. If the procurement is poor, it will also cause environmental pollution. Environmental protection is a very serious hazard. Lithium has relatively low carbon friendliness.


4. Price level: Many of the main manifestations of lithium-ion fusion are superior to lead-acid batteries in all fields, but the price level is slightly higher than that of lead-acid batteries. This is also inevitable.

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Storage temperature -40% charged state -------100% charged state
Graphene dresses energy storage lithium batteries in a "fireproof coat", reducing the explosion coefficient of electric vehicles
Lithium-ion batteries have numerous advantages, such as high working voltage (three times that of nickel-metal-hydride and nickel-cadmium batteries), large specific energy (up to 165Wh/kg, three times that of nickel-metal-hydride batteries), small size, light weight, long cycle life, low self-discharge, no memory effect, and no pollution. Lithium iron phosphate batteries are highly favored in the new energy industry. With a cycle life of around 3,000 times and stable discharge, they are widely used in power batteries and energy storage fields.
It is well known that new market demands for lithium-ion batteries are taking shape very rapidly. Lithium-ion batteries are currently divided into three major categories. The first is consumer electronic products. Nowadays, lithium-ion batteries are widely used in mobile devices such as smartphones and laptops. The market capacity of this market can basically be calculated in the hundreds of billions. The second is the emerging demand for electric vehicles. Whether it is pure electric vehicles or plug-in hybrid vehicles, the current demand has gradually taken shape. Thirdly, lithium batteries will be used in the field of energy storage in the future. Its market capacity will be even broader than that of electric vehicles, and its market can even be measured by a value of trillions.
Lithium batteries usually come in two shapes: cylindrical and square. The interior of the battery adopts a spiral winding structure, with a very fine and highly permeable polyethylene film isolation material separated between the positive and negative electrodes. The positive electrode includes a current collector composed of lithium cobalt oxide (or lithium nickel cobalt manganese oxide, lithium manganate, lithium iron phosphate, etc.) and aluminum foil. The negative electrode is composed of a current collector made of graphitized carbon material and copper foil. The battery is filled with organic electrolyte solution. In addition, it is equipped with safety valves and PTC components (some cylindrical types are used) to protect the battery from damage in case of abnormal conditions or output short circuits. The voltage of a single lithium battery is 3.7V (3.2V for lithium iron phosphate cathode), and the battery capacity cannot be infinitely large. Therefore, single lithium batteries are often connected in series or parallel. To meet the requirements of different occasions.
The cathode material of a battery accounts for 30% to 40% of the cost of a lithium battery.
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