The 18650 power supply type is relatively common and all major manufacturers make it. It depends on how you want to buy it. If it is a batch order, you can find many by searching on Alibaba, but there may be fewer on Alibaba. Taobao
< p>The concept of power type you mentioned is rather vague. It is better to confirm the peak current, so that it is easier to judge whether the peak value is not very high (like 2C-3C.), no matter if you use ordinary batteries, such as batteries of laptops.Brands with good quality 18650 batteries: Sanyo, Panasonic.
1. Sanyo
Sanyo is a Japanese battery manufacturer and its 18650 batteries enjoy a high reputation in the market. Sanyo's 18650 battery has the characteristics of high energy density, long service life andof high security, and is widely used in notebook computers, electric vehicles and other fields. Among them, Sanyo's SANYO brand 18650 battery enjoys a high reputation in the industry, with stable and reliable performance and moderate price.
2. Panasonic
Panasonic is a comprehensive manufacturer of electronic products in Japan, and its 18650 battery is also highly recognized in the industry. Panasonic's 18650 battery uses advanced lithium-ion battery technology and has the characteristics of high energy density, long life and high safety. It is widely used in smartphones, laptops, electric vehicles and other fields. Among them, Panasonic 18650 lithium-ion cylindrical battery is highly praised in the market for its excellent performance and affordable price.
How to choose an 18650 battery
1. Capacity: The capacity of the 18650 battery is an important indicator to measure its performance. Generally speaking, the bigger it is. capacity, the longer the battery life. The 18650 batteries from top-tier brands have higher capacities, such as Sanyo, Panasonic and other brands whose capacities are generally above 2000mAh.
2. Internal Resistance: Internal resistance is another important indicator for measuring the performance of 18650 batteries. The smaller the internal resistance, the higher the power conversion efficiency of the battery and the higher the discharge current. The internal resistance of top-tier brands of 18650 batteries is relatively low. The internal resistance of brands such as Sanyo and Panasonic is generally less than 20 mΩ.
3. Lifespan: The lifespan of the 18650 battery is also an important indicator to measure its performances. The longer the lifespan, it means the battery can withstand more charges and discharges, and the longer it lasts. its lifespan will be. The first-tier brands of 18650 batteries have a longer lifespan, such as Sanyo, Panasonic and other brands, which generally have a lifespan of more than 500 times.
Reference for the above content: Baidu Encyclopedia—Panasonic