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Internal Resistance Tester for All Batteries ( 1 - 1999 m-ohm) - EQ-MSK-BK300

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Item Number: EQ-MSK-BK300


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Cylinder Battery Holder*
EQ-MSK-BK300 is a precision internal resistance meter for R&D or quality control of all rechargeable battery, which has accuracy up to 1 milli-ohm and can measure any battery from 0-19.99V. It is ideal tool for UN38.3 Initial Characteristics

  • Adopts sine wave AC power with frequency of 1000Hz to carry out test on the battery internal resistance. AC current used for test is about 10mA.

  • Applicable for internal resistance test of conventional capacitance single battery and its battery group. 

  • Built-in standard precision resistance (50 m-ohm), facilitating the user to calibrate the instrument test accuracy.

  • Capable of judging synchronously battery internal resistance and voltage, using microprocessor to set the upper/lower limit of the internal resistance and voltage alarm, outputting the audible and visual alarm.

Available battery voltage measuring range

  • Two selectable ranges:
    • DC 0 ~ 1.999V +/- (Accuracy: 0.2% RD + 0.1% FS  with resolution +/- 1mV)
    • DC 2 ~ 19.99V +/- (Accuracy: 0.2% RD + 0.1% FS  with resolution +/- 10mV)

Battery internal resistance

  • Two selectable ranges:
    • 1m-ohm ~199.9m-ohm:    Accuracy:   +/- (0.3% RD + 0.5 m-ohm) with resolution  +/- 0.1m-ohm
    • 200 m-ohm ~1999m-ohm:  Accuracy +/- (0.3% RD +2 m-ohm) with resolution +/- 1.0 m-ohm


Then cylinder battery holder and cable are optional for measuring cylinder cell and battery pack at easy. Please select it in the option bar.


  • AC110/220V, 50/60HZ, dissipation < 10W, 
  • (FOR 110V, PLEASE USE the EQ-AD-TF 60W transformer which can plug into 110V power and  is included in the package.  Clcik picture below for detail specs )

340 (W) x 110 (H) x 365 (D).
Warranty One year limited with life time support

Operation Instructions

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