Nowadays, electric vehicles have become a powerful tool for everyone to travel, and electric vehicle batteries, as the power source of electric vehicles, are also developing rapidly. At present, the mainstream batteries in the market include lead-acid batteries, lithium batteries and graphene batteries. What are the differences between them? How to choose? Come and see it!

What is a lead-acid battery?

Ordinary lead-acid battery is a kind of battery whose electrode is mainly made of lead and its oxide, and whose electrolyte is sulfuric acid solution. It has the characteristics of large body weight, high safety, high recyclable and usable value. It is the mainstream battery that occupies 70% of the market share of the current two-wheel electric vehicle.

What is a lithium battery?

Lithium batteries generally use lithium alloy metal oxide as the positive material, graphite as the negative material, using non-aqueous electrolyte battery, has the characteristics of light weight, high density, currently is the mainstream battery of electric vehicles, two-wheeled electric vehicles occupy part of the high-end market share of the battery.

And then there's the "up-and-comer" -- graphene batteries.

It is based on lead-acid battery, adding special graphene element battery, has the characteristics of higher density and longer life than ordinary lead-acid battery. It is an innovative battery mainly promoted by electric vehicle brands at present, and some brands will call it black gold battery.

1. Price difference

Sales price, lead-acid battery has the obvious advantage, lead-acid battery price is two-thirds of the graphene battery, a third of lithium battery, also because of the price advantage, lead-acid battery is currently the two rounds of the mainstream of the electric vehicles use batteries, has higher cost performance, graphene battery price in the middle class, lithium battery is high.

2.Service life difference

The service life of battery is the most concerned point when consumers choose and buy.

At present, the average service life of lead-acid battery is about 2 years, the cycle number is between 300 and 500 times; The average life of a graphene battery is about three years; Lithium batteries have a long service life, with the number of cycles between 700 and 1000, and the battery can be replaced in about four years.

3.Safety performance difference

These two years because of electric vehicle battery caused by spontaneous combustion phenomenon, mainly containing lithium battery electric vehicle, especially a lot of small workshops private lithium battery, because the density of lithium battery internal, heat resistant nearly, if overheating, such as summer or charging for too long, more than the temperature of the load, may cause spontaneous combustion phenomena, especially the inferior more carefully on the safety of lithium-ion batteries. The stability of the lead-acid battery is relatively high, generally there is little spontaneous combustion phenomenon.

4.Weight difference

Lithium batteries are lighter than lead-acid batteries, which is more suitable for users seeking small and portable electric vehicles, and lithium batteries are more convenient to extract.

5. Warranty difference

The warranty time of electric vehicle battery is an important standard that owners can refer to in the purchase. The warranty time of lead-acid battery, graphene battery and lithium battery are very different, and the warranty time of lithium battery is generally the longest.

6. Summary

If from the economic practical point of view, the choice of lead-acid battery is more practical and cost-effective; If the pursuit of range, the pursuit of durability and portability, economic circumstances allow, lithium battery is more appropriate; Graphene battery is a complementary product of these two batteries. It is safer and cheaper than lithium battery, and has a longer life and higher density than lead-acid battery. This is why many electric vehicle brands are now launching mid-range and high-end models with graphene battery.