Скачать с ютуб What are Lithium Ion Batteries? - 21700 vs 18650 Cells в хорошем качестве

What are Lithium Ion Batteries? - 21700 vs 18650 Cells

21700, 18650, 20700 and others simply refer to the physical size of the lithium-ion cell. For 18650, it’s an 18 mm diameter x 65 mm length. 21700 is 21 mm x 70 mm. While the explanation is simple, the difference is profound. NOTE: Correction on the math in the video—the volume differences should be π x r^2 x h NOT π x d^2 x h Apologies for not catching that before publishing. Current 18650 Cell Battery Pack Values Compact 1P Battery: 2.0Ah–3.0Ah (36 Wh–54 Wh) General Purpose 2P Battery: 4.0Ah–6.0Ah (72 Wh to 108 Wh) High Capacity 3P Battery: 9.0Ah (162Wh) Current 21700 Cell Battery Pack Values Compact 1P Battery: 3.0Ah–4.0Ah (54 Wh–72Wh) General Purpose 2P Battery: 6.0Ah–8.0Ah (108 Wh–144 Wh) High Capacity 3P Battery: 9Ah–12Ah (162 Wh–216 Wh) Get more information here: http://bit.ly/2m8YL6h