Reconditioned battery: affordable or a safety hazard

An electric car can last for five or six years, while a set of batteries can only last for three or four years, which means that in the process of using an electric car, you will inevitably need to change the batteries.

And in the process of changing the batteries, no matter whether you got the lithium battery replacement in a physical store or buy battery online, you may come across reconditioned batteries. This article will introduce what refurbished batteries, and how to identify refurbished batteries.

1. What is a refurbished battery

Refurbished batteries are actually trapezoidal batteries, regardless of whether it is a regular manufacturer or a small workshop, the essence of the trapezoidal battery, the battery cell has been used. The difference lies in the quality and remaining capacity of the original cell, and whether the way is formalized when re-packing.

For example, whether the capacity and voltage of the cells are tested, whether the consistency is maintained, whether the design of the battery pack takes into account the safety factor, the quality of the BMS, and the technology of the pack.

In this article, the refurbished batteries refers to through the recycling, some small manufacturers, small workshops with some of the battery can be utilized, disassembled and assembled, through the repair of the activation method of repair.

These batteries use old battery materials inside, and are usually sold by replacing the new shell or sanding and polishing the shell to make it look like a new battery.It differs from manufacturer's refurbished reuse in one major way.

This type of battery has not been factory qualified and has not been considered for battery safety and performance. For users, not only does the performance fail to achieve the desired effect, but there is also a great potential danger in terms of safety.

2. What are the problems of refurbished batteries compared to brand new ones

① Firstly the durability of batteries

The durability of refurbished batteries is often lower than that of new batteries. The

refurbished lithium ion battery life is may only last for a short period of time, some may only last for about half a year to a year, after which the battery's endurance drops rapidly.

Since the chemical composition and structure of old batteries have changed, they cannot be restored to the condition of new batteries even after refurbishment.

② Safety hazards

Old batteries may not take safety factors into consideration during the refurbishment process, and there may be internal defects. During riding, refurbished batteries are more likely to have bulging and short-circuit problems due to collision, instantaneous release of high current and other factors.

Due to the unstable chemical reaction inside the battery, refurbished batteries also have the risk of explosion, which may lead to serious property damage or even personal injury.

③ Performance degradation

The performance of refurbished batteries is usually inferior to that of new batteries, which may mean that the charging efficiency and discharge performance of the battery are reduced.

The refurbishment process may not be able to completely remove dirt and impurities from the inside of the battery, and these residues may further affect the performance of the battery.

④ Unreliable quality

Refurbished batteries often do not come with a clear quality guarantee, which means that consumers will find it difficult to obtain after-sales support in the event of a problem.

Some unscrupulous merchants may conceal the true condition of the battery, making it difficult for consumers to judge the actual state of the battery at the time of purchase.

In view of the above hidden dangers, consumers should avoid choosing refurbished batteries when purchasing batteries, and try to choose original new batteries or products that have been refurbished through regular channels and have clear markings.

At the same time, it is recommended to buy from reputable merchants and pay attention to whether the battery has obvious wear and tear or polishing marks to ensure the safety and reliability of the purchased battery.

Such as the brand new Tycorun 12V 100Ah Lithium Deep Cycle Battery. It has a strong discharge capacity which means that the lithium battery can be discharged with a large current for a long time, which is a huge test for the protection board. The protection board is written by an engineer, which is one of our core technologies.

The more powerful the BMS system is, the better the safety of the lithium battery can be guaranteed. Generally speaking, BMS system provides at least five protections, over-current protection, over-voltage protection, low voltage protection, temperature protection, short circuit protection, etc.

Not only guarantee the performance, but also the safety and reliability of the battery.

3. How to recognize refurbished batteries you need to pay attention to these 9 points

① Do not be tempted by the low price

At present, batteries on the market are very diverse in both type and price, with various prices. And, generally in the physical store to buy batteries, are negotiable, there are often a lot of consumers for cheap and buy "poor quality batteries".

As the saying goes, "a penny for a penny", so when buying batteries, it is best to first understand the market price of various types of batteries, especially need to pay attention to is that if the highest price and the lowest price difference of 150 or more, then basically sure that the low price of the merchant has a problem, do not be tempted by the low price, be cheated.

② Look at the packaging

When you buy a tram battery, first of all, we should see whether the outer packaging of the electric car battery is intact, whether there are signs of damage or dismantling.

Second, and then look at the battery itself is in good shape, pay attention to the appearance of the surface of whether there are abrasions, scuffing traces or the battery positive and negative metal terminal parts whether there is rust.

③ Check the anti counterfeiting label

Battery authenticity, see if there is a security label is the key. Generally speaking, most brands of electric car batteries will be in the factory, in the battery shell of the docking place affixed with anti-counterfeit labels.

Therefore, when buying, pay attention to see if the anti-counterfeiting label is well pasted, if necessary, you can also scratch the anti-counterfeiting label password coating to verify the authenticity. Finally, also pay attention to the battery above the production date of the machine.

④ Shell can not buy a bulge

In general, the new battery shell is very smooth, if the shell is found to be uneven, then it should be noted.

For the detection of whether the shell is flat, find the surface level of the desktop or floor, respectively, the battery placed face down, if the battery can be rotated, that means that the battery is not flat, which in turn indicates that the battery should be old batteries.

⑤ Battery shell thickness

Press the battery shell with your hand, if you feel very soft, you can press down some, or feel the shell is very thin, then be careful, this battery may be refurbished battery, the shell is polished.

⑥ Certificate of Conformity and warranty card is the new battery identity card

In general, the regular battery factory, there are accompanied by a certificate of conformity and warranty card.

Both of them can be said to be the identity of the new battery factory, especially the warranty card, it is still a commodity problem when seeking business to give the effective proof of the solution. It can be said that there is no warranty card of the battery is certainly still refurbished.

⑦ Look at the wiring holes of the terminals

There is a very simple method: just look at the terminal hole whether there are traces of use, you can see the old and new electric car battery.

⑧ Recognize the brand see the trademark

When buying batteries, you can also carefully observe the trademark of the battery shell to see whether the production process is delicate.

Generally speaking, the refurbished businessmen do not have professional trademark spraying and shell processing technology, often from the trademark form can be clearly seen on the authenticity of the battery.

⑨ Look at the factory date

Factory time is too long, on the one hand, the battery capacity is damaged, on the other hand, the manufacturer's warranty is counted from the factory date, if the factory time is too long, then the warranty will not be good.

Conclusion

To summarize, refurbished batteries as a cost-saving option for consumers to bring economic benefits at the same time, but also accompanied by non-negligible security risks. Therefore, safety must be prioritized while pursuing economic benefits.

To ensure the safety of reconditioned batteries, consumers should choose products that have been professionally certified and rigorously tested, and prioritize brands that offer clear warranty services.

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