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The lithium ion 21700 battery is a kind of rechargeable cylindrical battery, with a diameter of 21mm and a length of 70mm. Compared to 18650 batteries, these 21700 batteries are known for their higher energy density, large size, and power output. They are friendly to the environment and earth and can be reused many times.
High-quality Battery
Our lithium ion 21700 battery endures strict quality control to test its performance, including the Altitude/Low-pressure simulation test, Free drop test, and Vibration test. Through these safety tests, our 21700 li-ion battery will be more reliable to use, perfect for engine starting batteries, intellectual robots, electric bicycles/motorcycles/scooters, solar and wind power systems, telecom base, CATV-system, and computer server centers.
Lower MOQ
Bringing a chance to know the brand – Sunpower New Energy, the one that complies with the standards of Panasonic and Samsung, we set a lower MOQ of 2 for each type of 21700 lithium-ion battery. When you find it a good battery, you can connect with us for more wholesale 21700 lithium-ion cells.
Advanced Technology
We boast 2 large R& D centers in China and America, with more professional engineers to develop new types of battery technology, like low-temperature batteries. We are pursuing innovation in our 21700 batteries, which feature high capacity, longer cycle life, and wider applications.
Fast Delivery
Covering an area of 400,000 square meters, our factory can manufacture more than 21700 lithium batteries than others, about 100 pieces in 3 days. With our quick delivery of 21700 li-ion batteries, we can speed up your time to market.
Our 21700 lithium-ion cells have good storage performance and cycle life performance under high-temperature conditions. The charging temperature is higher than 45℃ while the discharge temperature is higher than 60℃. Based on the high-temperature battery technology, Sunpower 21700 lithium-ion cells adapt to more harsh environments. Its anode material is mixed with metal, which improves the crystal structure stability of lithium cobalt oxide at high temperatures, reduces the oxidation capacity of the material, and inhibits the reaction between the electrode material and the electrolyte.
If you require batteries for a high-temperature environment, Sunpower lithium ion 21700 battery will be your best choice. Featuring superior anti-swelling performance and stability, the 21700 batteries are very popular in the market. To get more wholesale 21700 li-ion cells, just contact Sunpower New Energy.
