Lithium-ion battery is one of the most popular rechargeable batteries for portable electronics, with a high energy density, which offers same voltage and capacity but small sizes and light weight. Extremely low self-discharge and no memory effect, which can be easy store and quick to a full charge.
Lithium-ion battery cells has two different shapes - cylindrical and prismatic. Cylindrical cells has standard models such as 18650, 18500, 14500, 26650... Prismatic cells are going to be replaced by Li-Polymer cells, standard models 103450, 503048...Lithium-ion batteries widely used on E-Bikes, Laptops, Power Tools, Mobile Phone, Power Bank, Garden Tools, Vacuum Cleaner and so on...
High energy density
The world highest energy density Lithium-ion cylindrical 18650 batteries are made by Panasonic - 243Wh/KG (Panasonic NCR18650B 3400mAh 3.6V); 693Wh/L (Panasonic NCR18650GA 3500mAh 3.6V).
Lithium-ion single cells with high output voltage from 4.2V till 2.5V; And high output current from 10C to 15C. E.G. Samsung INR18650-15M continuous discharge current 23A(15C); Sony VTC4, VTC5 and VTC6 can continuous discharge at 30A.
18650 is the world-renowned standard model of Lithium-ion battery cell - diameter 18mm and height 65mm. Other standard models are 14500, 18500, 26650...
Long service life
Cycle life of qualified Lithium-ion cells should over 300 cycles(Remaining 80% nominal capacity), but real service life up to 500 ~ 800 cycles.