1.2v 12v 18650 Li-ion Lithium Battery Capacity Tester HW-586

1.2v 12v 18650 Li-ion Lithium Battery Capacity Tester HW-586

• Power supply voltage: DC4.5-6V (micro USB interface)
  Working current: less than 70mA
  The discharge voltage: 1.00V-15.00V resolution 0.01V
  Termination voltage range: 0.5-11.0V
  Supported by current: the maximum 3.000A resolution 0.001A
  The maximum measurement error voltage: 1%+0.03V
  The maximum measurement error of current: 2%+-0.010A

  The maximum battery capacity range:
  9999Ah (1Ah=1000mAh) value of the larger through the decimal point shift switch,
  when lower than 10Ah shows X.XXX, above 10Ah show for XX.XX, and so on.

  Board size: 50mmX37mm

• Note:
  this circuit in order to improve the voltage measurement accuracy,
  specially designed DC bias,
  when the terminal is what all don’t pick will display a small voltage,
  does not affect the actual measurement,
  if you are short connected with the input terminal (absolute 0V)
  will display 0. To understand the principle can consult the superposition theorem in electrical engineering.