18650 Voltage detection box

The 18650 digital voltmeter head housing comes in two sizes, the red version and the green version, with slight differences in size. Choose the appropriate size for printing according to the purchased voltmeter head.Boost MeThank you for your support！Required accessories: One voltmeter head18650 battery positive and negative electrode shrapnelTwo M3 x 8mm screws (green version); Two M2.5 x 8mm (red version)