What are the advantages of slow charging for new energy vehicles?

Extend battery life
The battery can be said to be the “heart” of new energy vehicles, and slow charging is like a gentle guardian. When fast charging, a large current is quickly injected into the battery, which will make the chemical reaction inside the battery violent, easily cause overheating, accelerate battery aging, and shorten the battery life. According to relevant studies, long-term use of fast charging may cause the battery capacity to decay by 15%-20% within 2-3 years. Slow charging uses a small current to slowly charge, making the chemical reaction inside the battery more gentle and uniform, greatly reducing battery overheating and polarization. Some car owners have reported that after insisting on using slow charging for 3 years, the battery capacity has only decayed by about 5%, and the battery life is still stable. In this way, slow charging can significantly extend the service life of the battery, protect the “heart” of your car, and reduce the high cost of replacing the battery later.
Efficient energy conversion
Some of us may think that slow charging is slow and the efficiency is definitely not high, but this is not the case. During the charging process, the electrical energy of slow charging can be more fully converted into the chemical energy of the battery. Due to the small current, the process of the battery receiving electrical energy is more stable, reducing energy loss. For example, fast charging is like a turbulent stream of water, which is easy to splash and waste during the transportation process; while slow charging is like a trickle, which is injected steadily, so that every kilowatt-hour of electricity can be effectively converted into driving range. From the actual charging data, the charging efficiency of slow charging can usually reach more than 90%. In contrast, although fast charging is fast, the charging efficiency may be only about 80%-85%. Therefore, from the perspective of energy conversion efficiency, slow charging is not inferior, and may even be better.
Safe charging
Safety is the top priority in the charging process, and slow charging can be called a solid fortress in this regard. Due to the small charging current, the heat generated by the battery during charging is negligible, which fundamentally reduces the risk of safety accidents such as fire caused by overheating. At the same time, slow charging equipment is equipped with a complete multi-protection mechanism, such as overvoltage protection, overcurrent protection, short circuit protection, etc. Once an abnormality occurs in the charging process, these protection mechanisms will be quickly activated, like a loyal guard, instantly cutting off the power supply to ensure the safety of the battery and the vehicle. Looking back at past new energy vehicle charging accidents, safety incidents caused by overheating of fast charging are common, while slow charging has always maintained a very low accident rate due to its stable and low heat characteristics. Whether in a home garage or a public parking lot, using slow charging allows car owners to charge with peace of mind without worrying about safety hazards.
Stable operation of the power grid
With the rapid growth of the number of new energy vehicles, the impact of charging on the power grid is becoming increasingly significant. Fast charging has huge power, and many vehicles are fast charging at the same time, which is like putting heavy pressure on the power grid, which can easily cause voltage fluctuations in the power grid, affect the normal operation of other electrical equipment, and may even threaten the stability of the power grid.
In sharp contrast, slow charging has a lower power and has little impact on the power grid. Especially during the low-peak electricity price period at night, a large number of new energy vehicles are connected to slow charging, which not only cleverly utilizes the idle capacity of the power grid, but also effectively balances the load of the power grid, just like injecting a dose of “heart booster” into the smooth operation of the power grid. For areas where electricity supply is tight or grid infrastructure is yet to be improved, the advantage of slow charging is even more prominent, providing a solid guarantee for the widespread popularization of new energy vehicles and becoming a well-deserved harmonious partner of the grid.
Cost-effectiveness
From an economic perspective, slow charging is undoubtedly a highly cost-effective choice. On the one hand, slow charging equipment is affordable and relatively easy to install. Home users only need to have basic circuit conditions to easily complete the installation without spending a lot of money to purchase expensive equipment and carry out complex installation projects. On the other hand, slow charging can make full use of the low-peak electricity price period at night. Taking a certain city as an example, the low-peak electricity price at night is only 0.35 yuan per kilowatt-hour, while the peak electricity price during the day is as high as 0.8 yuan. Using slow charging during the low-peak period for a long time can save car owners a lot of electricity bills.