21700 / 12s2p / 50.4v
I have a battery with the above performance
Is the 21700 the right capacity?
12s is called a cell, is it correct that the higher the power, the better?
I'm curious about what 2p is in the back (please explain me)
18650 / 12s3p / 50.4v
Please tell me which one is better with this one
18650 or 21700 refers to the size of the battery.
The first two digits are the diameter. That means the diameter (diameter) is 21mm, and the trailing 70 means the length is 70mm.
It's a bit larger than the 18650, so I think the current capacity is about 3500~4000mAh.
12S means the number of cells connected in series. S is an abbreviation for Serial, meaning serial. Normally, in the case of lithium rechargeable batteries, the rated voltage is about 3.6 per cell, and the buffer voltage is 4.2V per cell.
In the above case, both are indicated as the buffer voltage. When it comes to the buffer voltage, it becomes 4.2V x 12 = 50.4V.
And in 2P and 3P, P means the number of parallel connections. P stands for Parallel.
Comparing the two, the top is a large-sized battery, configured in 12 series and 2 lines in parallel.
Below is a small size, 12 series and 3 lines in parallel.
It's a bit hard to say which one is good. By volume, the product below is a little bigger.
However, except for the case volume, the two products can be considered to have almost the same performance.