BT-1000L Lithium-Ion Cell Battery Tester

Model # BT-1000L

Product Description

The BT-1000L benchtop battery testers supports simultaneous high-speed measurement (10 seconds per cell) in the ever-expanding production lines of increasingly larger lithium-ion low resistance batteries. The meter measures the impedance of lithium-ion batteries using the low-frequency AC-IR measurement method without charging and discharging the battery, substantially reducing the time needed to inspect the internal resistance of battery cells. Software is included for viewing measurement data and trending analysis.

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Technical Specs

Parameters Measured:Impedance, Voltage, Temperature
Allowable Input Voltage:Up to 5 V
Impedance Measurement:Parameters: R, X, Z, θ
Frequency: 0.1 – 1050 Hz
Measurement ranges: 3.0000 mΩ, 10.0000 mΩ, 100.000 mΩ
Testing current: 3 mΩ range: 1.5 Arms, 10 mΩ range: 500 mArms, 100 mΩ range: 50 mArms
Voltage Measurement:Measurement range: 5.00000 V (single range)
Measurement time: 0.1 s (Fast) to 1.0 s (Slow)
Temperature Measurement:Range: -10 – 60°C (14 – 140ºF)
Measurement time: 2.3 s
Basin Accuracy:Z: ±0.4% rdg. θ: ±0.1°
V: ±0.0035% rdg. ±5 dgt.
Temperature: ±0.5 °C at 10 – 40°C (50 – 104ºF)
Functions:Comparator, self-calibration, sample delay, average, contact check, measurement current error, and other
Interfaces:RS-232C/USB (virtual COM port) * Cannot be used simultaneously
EXT. I/O (NPN/PNP can be switched)
Power Supply:100 to 240 V AC, 50/60 Hz, 80 VA max
Dimensions WxHxD:192 x 121 x 55 mm (7.56 x 4.76 x 2.17 in.)
Weight:800 g (1.76 lbs.) with batteries


What are some common applications areas for this product?
Common applications include but are not limited to:

  • Transportation
  • Electronic Vehicles
  • Green Energy
  • Utilities
  • Hospitals
  • Electronics
  • Battery Manufacturers
  • Battery Suppliers


  • Low-frequency AC-IR measurement*: Measure thereaction resistance of a battery
    *The BT-1000L ensures battery cell quality by measuring internal impedance at a low frequency of 1 Hz or below
  • Extremely reliable measurements for low-impedance batteries
    *The BT-1000L uses a testing current of 1.5 A at the 3mΩ range, which improves the S/N ratio
  • Circuit configuration highly tolerant of contact and wire resistance to provide stable measurements
  • Voltage measurement function equivalent to 6-digit DMM (± 0.0035% rdg.)

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Product Features

All-in-One Compact Unit
Correct any offset voltage and gain drift that may be present in the circuit to improve the accuracy of voltage measurement.

Sample Delay
Specify a delay between AC voltage being applied and sampling being started so that measurement can start after the response stabilizes.

Prevent Charging or Discharging when AC Voltage is Applied
To prevent the battery that is being measured from charging or discharging, the battery impedance meter terminates the applied measurement signal when zero is crossed.

Slope Correction Function
If measurement signals drift due to the battery characteristics or the input impedance of measurement instrument, the tester applies correction to the linear drift.

Temperature Measurement
Reaction resistance measured at low frequency is sensitive to temperature. An optional temperature sensor measures the temperature around the battery and associates the results with data, thereby improving the reliability of the measurements.

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  • Model #

    Battery Tester for Lithium-Ion Cells

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