High rate: the lithium battery pack that can bear high rate charging has strong working ability of rapid charging. For lithium iron phosphate battery pack, it must be able to charge quickly to consider its provisions on power lithium battery. The inspection method of polymer cell is: carry out the inspection of polymer cell according to the standards presented by the lithium battery manufacturer. If there are serious problems such as significant scalding in the whole charging process, the quality of rechargeable battery is poor. Generally speaking, safety regulations such as 3C battery charging and 30C charging and discharging shall be considered for power lithium battery.

Long term application: under normal conditions, 1c can charge and discharge 2000 times, the capacity of lithium iron phosphate battery is still 85%, and the capacity of 3000 times is 80%. Because the technical strength, raw materials and processing technology of each manufacturer are different, the specifications formulated are certainly different. Theoretically, the inspection method is based on the data information presented by the manufacturer. At this stage, whether the data information presented by the manufacturer is true depends on the harm of well-known brands, which depends on which well-known brands customers believe in.

How to quickly distinguish the quality of new and old lithium iron phosphate battery cells?

The detection shall be carried out with the AC Gear of the digital multimeter with high rated current of the overcharged battery. Detect the characteristics of battery 9V with dc10v and DC2V.

After selecting the gear according to the rated current of lithium battery, connect the positive and negative stages of rechargeable battery with DC ammeter respectively. If the experimental working voltage is greater than or equal to the rated current of the allowable deviation of the rechargeable battery. The battery is intact. When 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 clock, controller 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 noted that the working voltage of rechargeable batteries is generally 15% – 25% lower than that of similar rechargeable batteries. For example, the working voltage of 5# rechargeable batteries is, and rechargeable batteries are generally only. Therefore, it is necessary to carefully determine the marked rated current of lithium battery pack.

Ways to check the quality of lithium battery:

The faster test method is to test the internal resistance and large charge discharge flow. High quality lithium battery has very small internal resistance and large charge discharge flow. Using a digital multimeter 20a, connect two levels of lithium battery immediately. The current should generally be above or below 10a, or even higher, and can be maintained for a period of time. The good rechargeable battery is the one with stable relativity.

Look at the appearance. The design is plump. For example, a lithium battery with a capacity of 2000 Ma is too large. The processing technology is more detailed or the packaging looks more plump.

Depending on the strength, you can gently pinch or properly pinch the middle part of the lithium battery. If the strength is moderate and there is no soft extrusion feeling, it is confirmed that the lithium battery cell belongs to a good lithium battery cell.

Attach great importance to the total, except whether the net weight of the rechargeable battery in the packing box is heavy, if it is heavy, it belongs to high-quality lithium battery cells.

During the mid-term charging of the lithium battery pack, charge and discharge continuously for about 10 minutes. If the charging battery is not hot, it is confirmed that the battery protection board system software is sound. Generally, the quality of lithium battery with high-quality lithium battery protection board is better than that of general lithium battery.

The above is to quickly find out whether the lithium single rechargeable 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, choose lithium batteries with high cost performance as far as possible when purchasing, and the service time can be long or long.