ITEM NAME:Battery Capacity T Meter Discharge Tester 18650 Li-ion Lithium Lead-S Hours A1M9 Battery Capacity T Meter Discharge Tester 18650 Li-ion Lithium Lead-S Hours A1M9 Maximum battery capacity range: 9999Ah (1Ah = 1000mAh) greater value by shifting the decimal point to switch when the display is less than 10Ah X.XXX as shown above to reach 10Ah XX.XX, and so on. 2.Connect the battery to be tested positively to the positive input, a negative input to the negative, can not be reversed (the load can reverse the circuit)! Load connected to the output of the positive and negative output to work through the tester microUSB power adapter (not available desktop or laptop USB-