I want to change the battery, save some money and buy online. Easy to use and convenient, just afraid of buying the wrong one or not durable. It's very simple. Just look at two parameters and you can learn it in half a minute. The two most important parameters.
discharging current
The first thing to look at is the discharge current. We opened the hood, found the battery and saw a string of numbers. Next to CCA is 1 600A, right? This is the cold start current.
Li Jingbin and others published a paper "Matching Design Method of Vehicle Battery" in the magazine of Automotive Electrical Appliances. It says: the battery is responsible for providing large current during the start-up process and dragging the starter to work. When buying new batteries, CCA should buy at least the same number of batteries, or larger batteries, otherwise it may "freeze" the starter and the car will not start.
The capacity of the second battery depends on the battery capacity. In other words, looking at the original battery logo, the number with the Ah suffix is the battery capacity. The capacity of this 70Ah car mainly affects the service life of the battery. The battery capacity is too small, which is easy to cause problems such as battery feeding and starting difficulty. When you choose it yourself, you can't choose a capacity with the same price smaller than the original car. Try to choose one with larger capacity, higher cost performance and more durability.
What should I pay attention to when choosing an automobile battery with automatic start-stop function?
Generally speaking, as long as you look at the above two parameters, there is no problem with the selected battery. However, for cars equipped with automatic start and stop, there are 1 additional details. When you see the battery marked with AGM, this is called automatic on-off bottle. Generally, there are AGM and EFB, which is a bit like the difference between Android and fruit interface on mobile phones.
It was originally for the annual general meeting of shareholders, so just keep the letters correct. Don't change it to EFB. or vice versa, Dallas to the auditorium Although it may fit, it will be particularly durable. Just like letting soda basketball and Yao Ming run sprints, we can use both hands and feet, but we don't know whether it's appropriate or not, and whether we can win the championship. Buying batteries online is actually quite time-sensitive.
It's not quite the same as other things online. Generally, it will cooperate with local service providers. There were quite a lot of battery changes at home on the day of battery release, so you don't need to go to the store. Therefore, online shopping, compared with the price, will basically be cheaper than physical stores. Find a reliable store, enter the model, compare the above parameters, determine the brand and model, and place an order.
To sum up, buy your own battery and pay attention to two parameters. Cold start current CCA and battery capacity Ah are the same, at least the same as before. If there is automatic start and stop, AGM should be locked. Don't change it to EFB, and vice versa.