2pin 1.5 and 2pin 1.5 F : the order of red wire and black wire is diferent. 2Pin 1.5 : 1th pin is black wires. 2th pin is red wires. 2pin 1.5 F : 1th pin is red wires. 2th pin is black wires. = Li battery size :Thickness 0.9 cm x Width 6.0 cm x Length 9.0 cm.
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