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High speed trains require charging to work. For many users, electric vehicles may not run as far or as fast as they did when used improperly or for too long. So, how often or under what circumstances do we need to replace the battery?

Firstly, it depends on what type of battery you are using. Nowadays, mainstream batteries are divided into two categories: lead-acid batteries and lithium-ion batteries, and of course, further models can be subdivided. Today, let's talk about how many years do electric vehicles using lead-acid batteries need to be replaced and which brand of battery is more durable when replacing the battery?

How many years do electric vehicle batteries need to be replaced?

At present, new batteries produced normally have a charging and discharging cycle of about 350 times, which means that after using up the charging and discharging cycles, they are basically approaching a scrapped state. On the other hand, if the average user charges the battery every 3 days, the battery's lifespan is about 3 years, and a new battery needs to be replaced in the third year.

What brand of battery is more durable?

It has to be said that the battery has a long cycle life. It can be cycled more than 360 times under normal use at 25 ℃, and maintained and used according to regulations, with a cycle time of more than 600 times. When the following phenomena occur, it can be judged that the battery life has stopped.

1. When charging the battery, it generates severe heat. When the battery reaches the end of its lifespan, the active substance falls off and the internal resistance increases, causing the electrolyte temperature to rise during charging and producing a large amount of gas, resulting in a decrease in efficiency and an increase in heat generation.

2. Batteries that have reached the end of their lifespan experience significant and unstable performance degradation.

3. If the actual discharge capacity of the battery is less than about 70% of the rated capacity and cannot be significantly increased after maintenance, it can be determined to be scrapped.

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