Which polymer battery is better than 18650 battery?

1. Compare the brand of Apple IPAD3 polymer lithium ion battery and 18650 battery. Assume that Apple IPAD3 polymer lithium ion battery has 3 pieces of polymer, length 125mm and width 65mm when stacked, total thickness 10mm, capacity 11560mAH, Panasonic 18650 lithium ion battery, length 65mm diameter 18mm, with a capacity of 3350mAH for analysis, you may really like 18650 batteries, but some people like polymers. Just like the lithium-ion polymer mobile phone batteries developed by hand-noodle factories, they like the following black batteries, especially Apple batteries or IPAD are basically black batteries. 2. Comparative analysis of capacity and volume of polymer battery and 18650 battery Lithium 186509*9*pi*65u003d16540mm3, capacity 3350mAH, 0.20254mAH per mm3 polymer 125*65*10u003d81250mm3, capacity 11560mAH, 0.14228mAH per mm3 lithium wins, The same volume capacity is 42.4% higher than polymer! ! ! Some people say that this is unfair, 18650 is round, it is impossible to completely take up the space, so good, I will use the 18650 smallest bounding rectangle to calculate the lithium 1865018*18*65u003d21060mm3, the capacity is 3350mAH, 0.15907mAH per mm3 lithium wins again , Even the rectangular 18650 capacity is 11.8% higher than the polymer! ! ! 3. Weight and volume analysis of polymer batteries and 18650 batteries: Lithium 18650 measured 46.13g, capacity 3350mAH, 72.621mAH per gram of polymer measured 210.91g, capacity 11560mAH, 54.810mAH per gram of lithium and won countless times, the same weight capacity is 32.5 larger than polymer %! ! ! By comparing and analyzing polymer batteries and 18650 batteries, you will find that the polymer mentioned above is also lithium, which should be 40% higher than the volume-to-capacity ratio. In fact, because the 18650 is a steel shell, the weight is a bit heavier than the aluminum-plastic film. . 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 post: What is the difference between 18650 lithium ion battery and 26650 lithium ion battery?