Can lead-acid battery electric vehicles be changed to lithium-ion batteries? The reasons for not proposing to replace lead-acid battery electric vehicles with lithium-ion batteries are as follows:

1.the production cost of lithium-ion batteries is high. The production equipment is expensive and the labor cost accounts for about 40% of the production cost. The price is about three times that of lead-acid batteries. The cost-effectiveness of the three times price is not high, which gives people a sense of being flashy. In addition, lithium-ion batteries are difficult to recycle and the reuse rate is not high.

2.Due to the small size of lithium-ion batteries, multiple lithium-ion batteries are connected in series during assembly. During transportation and use, a solder joint may become disconnected or poorly soldered, which is a common problem when connecting lithium-ion batteries.

3.Lithium-ion batteries have potential safety hazards of fire and explosion. This is especially true when consumers unknowingly purchase inferior lithium-ion batteries online. In electric vehicles, the sealing conditions are not very good, and moisture easily leads to poor contact and other safety hazards.

How to convert lead-acid battery electric vehicles into lithium-ion batteries

The first step, taking a 48V lead-acid battery as an example, is to open the four corner screws of the battery and carefully open the top cover. You can see that there are 4 12V lead-acid batteries inside;

The second step is to remove the wires from the battery with a soldering iron after remembering the battery circuit. Be careful to prevent the lithium-ion battery from short-circuiting during the operation.

The third step is to take out all the old batteries and put the lithium battery in. When installing the battery, there are some small protruding plastics inside that separate the original lead-acid battery. This must be removed, otherwise the new battery will be worn out in the future.

The fourth step is to connect the terminals on the lithium-ion battery and wrap them with electrical tape.

However, it should be noted that when the original lead-acid battery is replaced with a lithium-ion battery, it must be required to match the voltage of the original vehicle battery, so that the capacity can be increased and the battery life will be longer. Even with the same capacity, the lithium-ion battery will have a longer battery life and life. Secondly, it should be noted that the original charger cannot charge lithium batteries, and a special charger must be purchased separately or customized.