Connectivity: If there is a thermal insulation board for the lithium iron phosphate battery lithium battery pack with poor connectivity, according to the basic principle of the barrel shape, its volume will mainly be the smallest, which will cause all lithium battery packs to be due to a certain lithium battery cell Because of this, electromagnetic energy can neither be sufficiently released, nor can it be digested and absorbed enough, and the long-term application will reduce the service life. If the explosion-proof plate is not used, the lithium battery pack will not only cause volume damage, but also potential safety hazards such as over-temperature and explosion.
The inspection method is: connect the lithium batteries that must be inspected in series, 4 or 6 lithium batteries form 1C battery charging and 3C charging and discharging, and observe the difference in the working voltage of the lithium battery during the whole charging process.
Lithium battery life rate: Because lithium iron phosphate battery lithium battery packs are commonly used in power lithium batteries, they consume a lot of power. Therefore, it is stipulated that the lithium battery life rate of lithium battery packs cannot be less than 2% per month. Therefore, the above is consistent Sexuality regulations are indispensable. After the consistency test reaches the standard, the test standard for the life rate of the lithium battery is: After the isometric rechargeable battery is fully charged, let it stand for one month, and then measure the capacitor value.
High rate: Lithium battery packs that can bear high rate charging have a strong ability to charge quickly. For lithium iron phosphate batteries, lithium battery packs must be charged quickly to take into account its regulations on power lithium batteries. The inspection method of polymer batteries is as follows: according to the standards presented by the lithium battery manufacturer, carry out the inspection of polymer batteries. If there are serious problems such as significant heat during the whole charging process, the quality of the rechargeable battery is not good. Generally speaking, power lithium batteries should be able to consider safety regulations such as 3C battery charging, 30C charging, and discharging.
(Manly 12.8V 20Ah Solar Light Battery)
Long-term application: Under normal conditions, the capacity of 1C charge and discharge is 2000 times, the volume of lithium iron phosphate battery is still 85%, and the capacity of 3000 times is 80%. Because the technical strength, raw materials, processing technology, etc. of each manufacturer are different, the regulations formulated are of course different. In theory, the inspection method is based on the data and information presented by the manufacturer. At this stage, whether the data and information presented by the manufacturer are genuine depends on the hazards of well-known brands, and it depends on which well-known brand the customer believes in.
How to quickly distinguish the quality of new and old lithium iron phosphate battery cells?
The AC power file of a digital multimeter that is higher than the rated current of the rechargeable battery is used for testing. Use DC10V, DC2V file to detect the characteristics of battery 9V.
After selecting the gear according to the rated current of the lithium battery, connect the positive and negative stages of the rechargeable battery with a DC ammeter. If the experimental working voltage is greater than or equal to the rated current of the rechargeable battery tolerance. The battery is intact. Under the condition that the experimental working voltage is less than 10% of the rated current, the rechargeable battery can be used to charge and discharge small household appliances. Such as quartz clocks, controllers, and other electronic products. When the experimental working voltage is less than 20% of the rated current, the rechargeable battery has no practical value.
It should be reminded that the working voltage of rechargeable batteries is generally 15%-25% lower than that of similar rechargeable batteries. For example, the working voltage of rechargeable batteries is that the rechargeable batteries are generally only. Therefore, be careful to make sure that the lithium battery pack is marked as The rated current.
Ways to test the quality of lithium batteries:
A faster inspection method is to inspect the internal resistance and large charge and discharge currents. High-quality lithium batteries have very low internal resistance and large charge and discharge currents. Use digital multimeter 20A, immediately connect 2 levels of lithium battery, the current should generally be around 10A, or even higher, and can maintain a period of time, relatively stable is a good rechargeable battery.
Look at the appearance, the fullness of the appearance design, such as the general lithium battery of 2000 mA, the volume is too large. The processing technique is more detailed or the packaging looks plumper.
Looking at the strength, you can gently pinch or properly pinch the middle part of the lithium battery. The strength is moderate and there is no soft extrusion feeling, which proves that the lithium battery core belongs to a good lithium battery core.
Attach great importance to the total number, except that the packaging box recognizes whether the net weight of the rechargeable battery is heavy, and if it is too heavy, it belongs to high-quality lithium batteries.
During the mid-term charging of the lithium battery pack, continue to charge and discharge for about ten minutes. If the two aspects of the rechargeable battery are not hot, it is confirmed that the battery protection board system software is sound. Generally, the quality of the lithium battery with a high-quality lithium battery protection board is better than an ordinary Lithium battery.
The above is to quickly find out whether the lithium battery is good or bad. Lithium batteries have a certain service life, and the price of lithium batteries is higher than other rechargeable batteries. Therefore, when buying, choose lithium batteries that are cost-effective and can last longer.
MANLY Battery Company, a professional manufacturer of lithium iron phosphate batteries, provides customized services for multi-series parallel lithium iron phosphate batteries/lithium iron phosphate power batteries. The products are widely used in electric bicycles, golf carts, electric wheelchairs, electric tools, electric toys, Solar batteries, emergency lights, solar street lights, UPS backup power supplies, and various instruments.
