Common lead-acid batteries are electrodes mainly made of lead and its oxides, and the electrolyte is a sulfuric acid solution battery. They are characterized by their large weight, large size, and high safety, and have high recyclability and usable value. They are the mainstream batteries that occupy the current market share of two-wheeled electric vehicles. Lithium batteries generally use lithium alloy metal oxides as positive electrode materials, graphite as negative electrode materials, and non-aqueous electrolytes. They are characterized by their light weight, high density, and are currently the mainstream batteries for electric vehicles, occupying a high-end market share of some two-wheeled electric vehicles. In addition, there is also a "latecomer" - the graphene battery. It is a battery based on lead-acid batteries, with a special graphene element added, which has the characteristics of increased density and extended lifespan compared to ordinary lead-acid batteries. It is an innovative battery that is currently promoted by most electric vehicle brands and is sometimes referred to as a black gold battery.
In terms of sales price, lead-acid batteries have significant advantages. The price of lead-acid batteries is two-thirds that of graphene batteries and one-third that of lithium batteries. Also, because of their price advantages, lead-acid batteries are currently the mainstream batteries used in two-wheeled electric vehicles and have higher cost-effectiveness. Graphene batteries are in the middle price range, and lithium batteries are in the high-end.
Over the past two years, incidents of spontaneous combustion caused by electric vehicle batteries have mainly been caused by electric vehicles powered by lithium batteries, especially many small workshops that use self-made lithium batteries, which due to the high density of lithium batteries and poor heat resistance, may cause spontaneous combustion if overheated, such as in summer or during prolonged charging or when exceeding the temperature load, especially poor quality lithium batteries that require more caution in terms of safety. Lead-acid batteries are relatively stable and rarely have spontaneous combustion phenomena.
Lithium batteries are lighter than lead-acid batteries, which is more suitable for users who pursue lightweight and compact electric vehicles, and lithium batteries are also easier to extract.
The warranty period of electric vehicle batteries is an important standard for car owners to consider when purchasing. The warranty periods of lead-acid batteries, graphene batteries, and lithium batteries vary greatly, with lithium batteries generally having the longest warranty period.
If from an economic practical point of view, choosing lead-acid batteries is more practical and cost-effective; if pursuing extended range, durability and lightweight, and economic conditions permit, lithium batteries are more suitable; graphene batteries are complementary products to these two types of batteries, they are safer than lithium batteries, have lower prices than lead-acid batteries, have longer lifespan and higher density, which is why many electric vehicle brands currently favor vehicles equipped with graphene batteries for mid- to high-end models. What kind of battery to choose depends on the electric vehicle model you choose, as the model should match the battery. Also, consider your actual use. But regardless of which battery you choose, you should choose qualified products from regular manufacturers and avoid using inferior products.