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Firstly, comparison of weight

lithium-ion batteries are more lightweight, with a high capacity density of up to 192Wh/kg. With the same weight and volume, they can hold multiple times more energy than lead-acid batteries. Currently, for two wheeled electric vehicles with high range, choosing a lithium-ion battery is the best way.

Secondly, comparison of charging efficiency

The charging efficiency of lithium-ion batteries is higher. Taking the ternary 18650 lithium-ion battery as an example, the maximum charging current is generally 0.5C, and the maximum charging current can be 12A. Of course, for the safety and service life of lithium-ion batteries, the lithium battery protection board limits the maximum charging current. Currently, it is recommended to have a maximum charging current of 6A, and 72V24Ah batteries only require 4 hours to charge.

Thirdly, comparison of lifespan

lithium-ion batteries have a longer lifespan. Generally, ternary lithium batteries have around 800 cycles. According to the general usage of our current electric vehicles, lithium-ion batteries can be used for at least 3 years.

Fourth: Comparison between performance and durability

A lithium-ion battery with the same capacity can effectively use more energy than a lead-acid battery. Let's compare 72V lead-acid and lithium-ion batteries. The working voltage of a typical lead-acid battery is 63V-82V, with a voltage difference of 19V in the middle. Taking 2V lithium-ion batteries as an example, for a 20 series 18650 lithium-ion battery, the operating voltage of a single lithium-ion battery is 2.75-4.2V, and for 20 series it is 55V-84V. In order to protect the safety and lifespan of lithium-ion batteries, the set operating voltage is 58V-83.5V, with a middle voltage difference of 25.5V, which is 6.5V more than the voltage difference of lead-acid batteries, which is 34% more than the working voltage range of lead-acid batteries.

Fourth: In terms of quality and volume

Normally, lead-acid battery packs weigh between 16-30 kilograms and have a larger volume; lithium-ion batteries generally weigh between 2.5-3.0 kilograms and have a relatively small volume, making them easy to ride and transport. From a quality perspective, it is difficult to determine the quality of the two, but consumers can purchase high-quality lithium-ion batteries produced by reputable manufacturers according to their actual needs.

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