Currently, representative companies in the field of lithium-ion batteries are Panasonic, LG Chem, Samsung SDI and other companies. Samsung 18650 lithium batteries and Panasonic 18650 lithium batteries are also divided into multiple price points based on brand capacity differences, each targeting different consumer groups and markets. Next, lithium battery manufacturer Selian Energy will analyze the difference between Panasonic 18650 lithium battery and Samsung 18650 lithium battery.
Samsung 18650 lithium battery has small internal resistance and good quality. The internal resistance of polymer cells is smaller than that of ordinary liquid cells. The internal resistance of domestic polymer cells can even be below 35mΩ, which greatly reduces the self-consumption of the battery. extending the standby time of mobile phones can fully reach the level of international standards. This kind of polymer lithium battery that supports large discharge current is an ideal choice for remote control models and has become the most promising product to replace nickel-metal hydride batteries.
The size of Samsung's 18650 lithium battery is fixed, and its maximum capacity has always attracted the attention of many practitioners. In recent years, various manufacturers have improved their technology and their capacities have also increased accordingly. Samsung, Panasonic, LG, Sony, and Toshiba can all achieve more than 3500mAh. , but the capacity range with the best stability and consistency is 2600~3000mAh. If you are making a battery pack, it is best not to use the highest capacity. Regardless of the cost performance and the service life of the battery pack after being assembled, it is not very cost-effective, so it is not about the battery cells. The higher the capacity, the more stable and long-lasting it will be.
Comparison between Panasonic 18650 lithium battery and Samsung 18650 lithium battery
Panasonic 18650 lithium battery:
Tesla is currently the best electric car in the world, with performance that is not inferior to traditional fuel vehicles. In addition to electric motor technology, one of Tesla's core technologies is its advanced battery technology. To reveal the secrets of Tesla batteries, a foreign expert once disassembled the battery panel of a Model S. The Tesla battery pack is placed on the chassis between the front and rear axles and can weigh up to 900 kilograms. The battery pack is composed of more than 7,000 18650 lithium batteries.
The Panasonic 18650 lithium battery used by Tesla uses NCA as the positive electrode and designs a complex battery management system to ensure and improve the efficiency and safety of the battery as much as possible. As for whether it is absolutely safe, this cannot be answered. If you want to say spontaneous combustion, I would also like to say that gasoline cars also spontaneously ignite in summer.
Panasonic can now purchase the highest capacity of 3000mah. Panasonic's 18650 lithium battery has a long service life, and its cycle life can reach more than 500 times under normal use, which is more than twice that of ordinary batteries.
Panasonic 18650 lithium battery has high safety performance, does not explode or burn; is non-toxic, non-polluting, and has passed RoHS trademark certification; various safety properties are integrated in one go, and the number of cycles is more than 500 times; it has good high temperature resistance, and the discharge efficiency reaches 100 under 65 degrees %. To prevent battery short circuit, the positive and negative electrodes of 18650 lithium battery are separated. Therefore, the possibility of short circuit has been reduced to the extreme. A protective board can be installed to prevent the battery from overcharging and over-discharging, which can also extend the service life of the battery.
Samsung 18650 lithium battery:
Samsung 18650 lithium battery has small internal resistance and is of good quality. The internal resistance of polymer cells is smaller than that of ordinary liquid cells. The internal resistance of domestic polymer cells can even be below 35mΩ, which greatly reduces the natural resistance of the battery. Power consumption and extended mobile phone standby time can fully reach the level in line with international standards. This kind of polymer lithium battery that supports large discharge current is an ideal choice for remote control models and has become the most promising product to replace nickel-metal hydride batteries.
Since the size of the Samsung 18650 battery is fixed, its maximum capacity has always attracted the attention of many practitioners. In recent years, the technology of various manufacturers has improved, and the capacity has also increased accordingly. Samsung, Panasonic, LG, Sony, and Toshiba can all achieve more than 3500mAh. , but the capacity range with the best stability and consistency is 2600~3000mAh. If you are making a battery pack, it is best not to use the highest capacity. Regardless of the cost performance and the service life of the battery pack after being assembled, it is not very cost-effective, so it is not about the battery cells. The higher the capacity, the more stable and long-lasting it will be.
The above is the difference between Panasonic 18650 lithium battery and Samsung 18650 lithium battery.