1.Advantages of Charging to 80%

Charging a new energy vehicle battery to 80% offers several benefits. First, it extends the battery life. With a reserve of power, the internal pressure of the battery is relatively lower, and the chemical activity remains more stable for a longer time, allowing the battery to provide power to the vehicle for a longer period. Second, it improves battery efficiency. If the battery is charged to 100% each time, the power will quickly drop below 90% during use. However, by charging to 80%, the battery will maintain a more stable and higher charge during usage, making it more efficient for short daily trips and allowing the owner to better utilize the battery power.

2.Disadvantages of Charging to 100%

Many vehicle owners believe that charging the battery to 100% will provide longer driving range and make them feel more secure. However, this practice actually comes with potential issues. First, battery aging: When a battery is charged to full capacity each time, the internal chemicals are kept under high pressure. This is similar to a person being in a constant state of stress, which can lead to physical problems. Over time, the chemicals in the battery lose their activity, resulting in decreased performance and shortened battery life. Second, safety risks: Although current battery technology is relatively mature, there are still potential risks. If the internal pressure of the battery becomes too high, it may cause short circuits, self-ignition, or other safety accidents, threatening the safety and property of the vehicle owner.

3.Adjusting Charging Methods According to Actual Conditions

In real life, car owners should adjust their charging methods according to their travel needs and usage habits. If a long-distance trip is coming up, it is necessary to charge the battery fully in advance to ensure that there will be no trouble due to insufficient power during the journey. For short trips within the city, charging to about 80% is sufficient for daily use and also helps protect the battery.

4.Charging Strategies for Different Battery Types

Currently, the most commonly used batteries in new energy vehicles are lithium iron phosphate batteries (LiFePO4) and ternary lithium batteries. They have different characteristics and therefore require different charging strategies.

Lithium iron phosphate batteries are known for their high safety, long lifespan, and stability. However, they have lower energy density, and their cycle life can reach 3,000 to 5,000 cycles. Since their power display is not very accurate, it is recommended to fully charge the lithium iron phosphate battery once every 2 to 4 weeks to recalibrate the power. For daily use, it is ideal to keep the charge between 20% and 80%.

Ternary lithium batteries offer better energy density and cold resistance, but their stability is lower, and their cycle life ranges from 1,000 to 2,000 cycles. For ternary lithium batteries, it is advisable to avoid frequent full charges. It is best to keep the power in the "comfortable zone" between 20% and 80% for everyday use to prolong battery life.

5.Other Charging Considerations

In addition to monitoring the charging percentage, the charging time and method are also important. It is best to avoid charging in high or low-temperature environments, as extreme temperatures can affect the internal chemical reactions of the battery, increase internal pressure, and affect battery lifespan. Charging in high-temperature environments can also lead to overheating, which may cause safety issues.

Additionally, it is recommended to use proper chargers and cables to ensure safety and efficiency during charging. Using mismatched chargers can lead to charging failures or safety accidents.