The operating voltage of a single battery is as high as 3.7V, which is 3 times that of nickel-cadmium batteries and nickel-hydrogen batteries, and nearly twice that of lead-acid batteries.
Therefore, when composing a power battery pack of the same voltage, the number of lithium power batteries used in series will be much less than that of lead-acid batteries and nickel-hydrogen batteries.
If there are more single cells in the ion lithium ion power pack, the higher the uniformity requirements of the single cells in the ion lithium ion power pack, the more difficult it is to make the long lifespan. After the problems of battery pack happened in the actual use process, it is generally one or two of the single batteries had problems, which then caused problems with the entire battery pack.
Therefore, it is not difficult to understand why 48V lead-acid batteries have higher feedback than 36V lead-acid batteries. From this perspective, lithium is more suitable for the use of power batteries.
The weight is one-third to one-fourth of the lead-acid battery of the same energy. From this perspective, lithium battery consumes less resources.
Moreover, due to the relatively large reserves of elements used in lithium manganate batteries, the price of lead-acid and nickel-hydrogen batteries may be further increased, and the cost of ion lithium ion power pack is further reduced.
The volume of ion lithium ion power pack is one-half to one-third that of lead-acid batteries, providing a more reasonable structure and more beautiful appearance design conditions, design space and possibilities.
At current stage, the limited volume and weight of lead-acid batteries make designers' ideas greatly restricted, resulting in the current electric bicycles extremely similar in terms of structure and appearance. The use of ion lithium ion power pack provides designers with more space and conditions to display design ideas and design styles.
Of course, it also leads to various sizes of ion lithium ion power pack for electric bicycles, which is not conducive to the development of the lithium battery industry.
Calculated by maintaining 60% of capacity, the number of 100% charging and discharging cycles of the battery pack can reach more than 600 times, the service life can reach 3-5 years, and the lifespan is about two to three times that of lead-acid batteries. With technological innovation and equipment improvement, the battery life will be longer and the cost performance will be increasingly higher.
At the same time, there are no toxic substances in lithium power batteries. However, there are harmful substances, lead and cadmium, in the lead-acid batteries and nickel-cadmium batteries.
Although there is no pollutant in lithium batteries, considering from the perspective of resource conservation, the recycling of ion lithium ion power pack, the safety in recycling, and the cost of recycling also need to be taken into account.
Before charge, it is no need to be discharged like nickel-cadmium batteries and nickel-hydrogen batteries, and it can charge anytime and anywhere.