We all know that there are three kinds of batteries for electric vehicles: new batteries, maintenance batteries and turnover batteries. However, when many users replace new batteries, it is very difficult to distinguish the differences among the three. If they don’t know how to choose, they will not choose the wrong one. In fact, as a user, only need to read these words, you can distinguish maintenance and turnover battery at a glance. < / P > < p > for the three, the biggest difference between them is the outer packaging. First of all, the new battery packaging is relatively clean, generally red and white packaging. And the turnover battery will generally use blue packaging, and the package will have obvious after-sales turnover and other words. The maintenance battery generally adopts green packaging, and there will be obvious words of after-sales maintenance on the package. In addition, some battery packages will be printed with words such as “not for sale” to remind consumers. < / P > < p > secondly, open the battery package to see the battery. Generally, new batteries will have specific models, and the production date is clear, and there is no grinding trace. The shell of the turnover battery will be printed with the words of turnover battery, after-sales turnover, etc., and the date will also have obvious grinding marks. The maintenance battery shell will be printed with words such as battery maintenance and after-sales maintenance. In addition to the date being polished, there may be handwritten date. < / P > < p > in a word, when replacing a new battery, the user should first check whether the battery package has the words of after-sales turnover, after-sales maintenance or not for sale. If so, it can be judged that the battery is not a new battery, but a maintenance and turnover battery. Of course, if there is no problem with the outer packaging, it still depends on whether the battery case has the words of turnover battery, after-sales turnover, maintenance battery and after-sales maintenance. If so, it can be judged that the battery is a maintenance and turnover battery. < / P > < p > of course, for users, when purchasing electric vehicle batteries, they should try to avoid choosing some low-cost batteries, especially low-cost brand batteries, which are likely to be maintenance and turnover batteries. < / P > < p > finally, I’d like to give you the latest reference price of all kinds of new batteries. Generally speaking, the latest reference price of 48v12ah new battery is about 350 yuan, that of 48v20ah is about 480 yuan, and that of 60v20ah is about 600 yuan. However, prices may vary due to different markets. But for users, if the actual price is much lower than the reference price, they need to carefully check whether the battery is maintained or recycled. Continue ReadingAmerican companies begin to give up R & D: who should pay for corporate research?