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Orange and grey handheld digital tester with LCD display and test leads

TeKit

TeKit SM8124 Battery Internal Resistance Tester 1.999V 1000Hz

SKU CH-5VSJ-S3QM9 MPN SM8124

Measures battery terminal voltage up to 1.999 V and internal resistance with a 1000 Hz AC four-wire method from -10 to 40 °C

  • DC Voltage9V
  • Analog/DigitalDigital
  • DC Polarity IndicatorYes
  • Color/FinishOrange/Gray
  • TypeInternal Battery Resistance Impedance Meter Tester Battery R
  • FeaturesInternal Battery Resistance Impedance Meter Tester Battery R
  • Measures internal resistance with 1000 Hz AC four-wire method
  • Voltage range up to 1.999 V for cell-level testing
  • Four-wire technique removes probe and lead resistance errors
  • Operates from -10 °C to +40 °C in field conditions
  • LCD readout shows resistance and voltage simultaneously

Battery resistance meter for lithium

The TeKit SM8124 measures internal resistance using a 1000 Hz AC four-wire method and reads terminal voltage up to 1.999 V on an LCD. It operates from a single 9 V battery and functions in environments from -10 to 40 °C. The orange-grey handheld unit is designed for quick checks on individual lithium-ion, nickel-hydroxide or lithium-manganese cells and assembled packs.

Suits technicians checking cell health.

The meter is intended for batteries that stay within the 1.999 V measurement window and the 200 V absolute input limit. Users who need to test larger modules, automotive high-voltage packs or cells above 2 V per unit should look at equipment with a wider voltage range and higher safety rating. It also lacks data-logging or PC connectivity for automated production lines.

Deciding spec: 1.999 V maximum voltage reading

The 1.999 V display ceiling determines whether the tester matches the cells you work with. Single lithium or nickel-based cells typically fall inside this span, while series strings and many lead-acid blocks exceed it. Confirm the nominal voltage of your target cells before purchase.

Highlights

  • Measures internal resistance with 1000 Hz AC four-wire method
  • Voltage range up to 1.999 V for cell-level testing
  • Four-wire technique removes probe and lead resistance errors
  • Operates from -10 °C to +40 °C in field conditions
  • LCD readout shows resistance and voltage simultaneously

Specifications

BrandTekit
ModelInternal Battery Resistance Impedance Meter Tester Battery Resistance Voltmeter
DC Voltage9V
Analog/DigitalDigital
DC Polarity IndicatorYes
Color/FinishOrange/Gray
TypeInternal Battery Resistance Impedance Meter Tester Battery Resistance Voltmeter
FeaturesInternal Battery Resistance Impedance Meter Tester Battery Resistance Voltmeter
Battery Type9V

Questions about this item

What does the 1000 Hz AC signal measure and what voltage range does it cover?

The tester uses a 1000 Hz AC signal with the four-wire method to measure internal resistance while eliminating contact resistance errors. It simultaneously measures terminal voltage up to 1.999 V.

What battery and leads are needed to power and connect the SM8124?

The unit requires one 9 V battery (not included) for power. It connects to the cell under test via red and black test leads using the four-wire Kelvin arrangement.

How do you set up the four-wire measurement and what common wiring mistake damages the meter?

Connect the red lead to the battery positive terminal and the black lead to the negative terminal. Exceeding 200 V on the input will cause permanent damage to the instrument.

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