Alert! Inferior modified lithium batteries have hidden dangers

Electric vehicle batteries mainly have two types: lead-acid batteries and lithium batteries. At present, lithium batteries are superior to lead-acid batteries due to their durability, number of full charge-discharge cycles, and volume and weight. Therefore, lithium batteries are increasingly favored by electric bicycle users, and many users are equipped with lithium batteries as a power source. But in recent years, there have been many deflagration incidents of electric vehicles, and the reason is all because of the installation of lithium batteries.

The safety of lithium batteries has always been questioned and has become an important issue in the electric vehicle market. So, are lithium batteries really bad?

Not really. Why did the explosion accident occur? In fact, it is because of the inferior modified lithium batteries.　

Alert! Inferior modified lithium batteries have hidden dangers

In the occurrence of many electric vehicle deflagration incidents, experts have analyzed and concluded that the original vehicle in the accident was a lead-acid battery, and then it was changed to a lithium battery due to the pursuit of higher endurance.

Based on this preliminary judgment, "lithium battery (lead battery alternative)" may be the fuse of the accident. Illegal modification can easily lead to mismatch of electrical systems and lack of safety protection functions. In addition, the use of low-priced and low-quality lithium batteries is the direct cause of the deflagration. The price of the lithium batteries is much lower than the market price, which may be assembled with low-quality batteries and sold in the secondary market.

Lithium batteries produced and sold by small workshops have hidden dangers

Lithium batteries produced and sold by small workshops may have potential safety hazards. What cannot be ignored are the current situations such as unauthorized increase in battery capacity or illegal conversion of large and small lead-acid batteries into small and large capacity lithium batteries.

The price of lithium batteries is double that of lead-acid batteries, but the price of low-quality refitted lithium batteries is even lower than that of lead-acid batteries. The profit margin has made many people jealous, which has also caused more and more "Illegally operated" (without production license, product inspection certificate or factory name and address) lithium batteries enter into the market in the past two years.

Recently, news has exposed the manufacturing problems in various lithium battery assembly companies for electric bicycles, and said that the process gap between manufacturing is very large, and the key links such as battery insulation and anti-collision are very extensive.

A large number of factories use manual assembly methods, which are randomly assembled according to market demand, and have no technical content and quality inspection at all. Compared with production factories, they are more similar to manual workshops. Such manual assembly has no quality assurance, no safety testing, and even lithium battery products that seriously exceed the standard, how can they not cause safety problems after they enter into the market?

Risks of unauthorized modification of lithium battery

Some users blindly pursue longer cruising range and do not hesitate to illegally modify large-capacity non-standard lithium batteries. As everyone knows, the larger the capacity of the battery, the higher the requirements for technology and safety protection design. However, in the current market, large-capacity non-standard batteries are often shoddy and inferior products.

At the same time, if the large-capacity or over-standard battery is replaced illegally, it does not match the main power line connected to the battery, and the original vehicle circuit cannot withstand the strength of the modified parts. When the current is too large, the joint load will increase sharply, which will cause the vehicle's electrical circuit to be overloaded. , short circuit and other faults, the probability of fire accidents is also relatively increased.

With the frequent occurrence of fire and explosion accidents of two-wheeled electric vehicles, the China Consumers Association and the National Light Electric Vehicle and Battery Product Quality Inspection Center have recently issued a consumer warning to consumers: be sure to go to regular sales places or operators with good reputation to buy two-wheeled electric vehicles, use the original charger to charge them properly, and do not illegally modify electric bicycles.

As sub-brand of BETTER – WELLPACK focuses on lithium battery customization and application solutions research and development and services