There should be no standard answer to this question. It depends on the needs of individuals Electric vehicle helmet Its durability is also high, so as long as you think it is not outdated, you can always use it. But this is just a conventional cognition. In fact, the battery car Helmet It also has a shelf life, so the practice shall prevail.
The electric vehicle helmet mainly protects the head, but it also has some additional effects. For example, warmth and wind protection are some of its rated effects. However, with the increase of the transparency of the mirror surface over the service life, the comfort during wearing will decline, and the paint on the outside will also fade, especially for the helmet with bright colors, The fading performance will be very significant. In this state, maybe we should consider replacing the helmet.
Because of the continuous use, both the appearance and the useful effect will decline. The transparency of the mirror will affect the line of sight, especially in the night rush. The comfort of the helmet will also affect the riding effect to a certain extent. Under normal conditions, after wearing the helmet, it should not show the phenomenon of adding head, and it should not be too loose. It will fit the head just right, but with the use of years, the interior will be damaged, The helmet will become loose. At this time, the protective effect of the helmet is not so good, but it will bring unexpected damage.
The above is just a personal opinion, but according to the authoritative person, the helmet also has a shelf life, which usually lasts about five years. As for the basis of the shelf life, it is basically the same as the above, but there is an additional factor, such as the deterioration of helmet material, expiration of glue, etc. If you can significantly feel that the helmet had this performance at that time, Then we should bear the pain and choose a new helmet in a hurry.
As for the calculation specification of the five-year warranty period, there are two statements. One is that the production date should prevail, which seems too strict. Since the helmet will have a relatively long cycle from the manufacturer to the user, if this specification is adopted, the practical use period of the helmet will be very limited, so the operability is not high. (In view of this situation, don't buy helmets with a long manufacturing date.)
The other is based on the date of use. This specification is relatively reasonable. After all, the helmet will perform well in all aspects when it is sealed, and its so-called expiration is nothing more than formed in later use. So we can judge whether it should be replaced based on this period and the practice of the helmet at that time, Only in this way can we ensure the proper function of the helmet, not waste it, and not delay the deadline for replacing the helmet.
