Analysis of five options for high-quality lithium-ion batteries

1. Check the appearance and packaging of a battery. First of all, you can judge from the appearance and packaging. A product that can't even do the details on the packaging is definitely not a professional product. The appearance can help us filter out some inferior products. 2. Comparison of weight The weight and capacity of lithium-ion batteries are directly proportional. If it is a polymer lithium-ion battery, if the weight difference is too large, the capacity will definitely be insufficient, but some batteries have different capacities. In addition, you can also feel the weight of the battery from the outer packaging. If the weight is heavy, it is biased towards high-quality lithium-ion batteries. 3. Test the internal resistance and maximum current. In fact, the fastest way to judge the performance of lithium-ion batteries is to test the internal resistance and maximum discharge current. Good quality lithium-ion batteries have very low internal resistance and a large maximum discharge current. Use a multimeter with a 20A range to directly short the two electrodes of a lithium-ion battery. The current should generally be about 10A, or even higher, and it can be maintained for a period of time. A relatively stable battery is a good battery. 4. Detection of live working. During the live working process of the lithium-ion battery, continue to discharge for about 10 minutes. If the battery poles are not hot, it proves that the battery protection board system is perfect. Generally, the quality of lithium-ion batteries with high-quality protection boards is better than ordinary lithium-ion batteries. Great. 5. Look at the battery cell The most important part of a battery is undoubtedly its battery cell. At present, most of the batteries used in the market are soft-pack batteries and 18650 batteries, which are also common materials for lithium-ion battery pack batteries. First check whether the batteries are brand new, because there are some bad small workshops on the market that use second-hand batteries to make lithium-ion batteries. Soft-packed lithium-ion batteries, also known as polymer batteries, are batteries with a gel-like soft-packed electrolyte that can be made into various shapes. The battery is safe and will not explode. Current electric vehicle batteries are basically 18650 batteries, which are mainly made of lithium iron phosphate, lithium manganate and ternary. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Precautions for the use of lithium ion battery scrubbers