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When it comes to electric two-wheelers, the first thing that comes to mind is lead-acid batteries. So, with the addition of sodium batteries and graphene batteries, the pattern of batteries for electric two-wheeled vehicles will change a lot, and lead-acid batteries have become a trend to be eliminated.
Graphene batteries, also known as black gold batteries in the industry, are different from pure graphite graphene batteries, which refer to lead-acid batteries with graphite components added to the positive and negative electrodes, which are essentially enhanced versions of lead-acid batteries. But there's a big improvement in terms of performance!
Graphene batteries have better performance against low temperatures, and by increasing the components in the electrolyte to alleviate low temperature condensation, graphene batteries overcome the problem of low temperature efficiency of traditional lead-acid batteries, and at the same time, more stable graphene elements are added to the graphene poles, so that the battery can support high-power charging, so as to achieve the fastest 1-2 hours full speed. In addition, its cycle life has been increased from 500-600 times to about 800 times!
After all, graphene batteries are still a kind of lead-acid batteries, so its energy density is lower than that of lithium batteries and sodium batteries.
Lithium batteries for electric bicycles are mainly lithium manganese oxide and ternary manganese. The stability has been greatly improved, especially the ternary manganese in the soft pack will not explode has become the biggest highlight, the number of cycles is more than 800-1000 times, the low temperature resistance effect is very good, although the energy density of lithium manganese oxide belongs to the bottom stream in lithium batteries, but it is several times higher than lead-acid batteries, but the price is the lowest in lithium batteries, the price is about 1.5 times that of the same type of lead-acid battery, therefore, the battery for small cars, the use of lithium manganese oxide battery is still very cost-effective.
Sodium batteries are still in the market testing stage, in addition to the price is very expensive, the technology is not very mature, most of the sodium batteries are still a new type of battery mixed with sodium and lithium. Of course, once the sodium battery breaks through, it will be a devastating blow to the lead-acid battery. Because the number of cycles of sodium batteries can reach more than 2,000 times, and they are not afraid of low temperatures, power loss, and explosions. The energy density is between graphene batteries and lithium batteries, and much higher than that of lead-acid batteries. Therefore, if the price of sodium batteries falls, a set of sodium batteries can last for more than 10 years. It's a good thing for the people, but it's not necessarily a good thing for the manufacturers!
Summary:
Focusing on the present, the most suitable for electric bicycles should be lithium manganese oxide batteries, which are not only light in weight and high in energy density, but also not very expensive, which can be accepted by most people. However, due to the quality of graphene batteries, they are not suitable for electric bicycles with a weight limit of 55 kg. Focusing on the future, then sodium battery must be the best car battery for electric bicycles, not only cheap, but also safe and stable, and the performance is stronger than lead-acid batteries!