Capacity:Take the 5000mah 21700 battery as an example, 1P=5AH, 2P=10AH, 3P=15AH, 4P:20AH. 6S1P 40A：17.4 8.8 2.5cm 103g. You can install the battery directly after receiving it. The direction and polarity of the battery installation are subject to the symbols on the circuit board.
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