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Extech Battery Capacity Tester (BT100) with Datalogger & Software

Model #: BT100
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First Product Previous Item Product 13 of 37 Next Item Last Product
Category Power & Circuit Testers

The battery tester is deigned for measuring the internal resistance and output voltage of lead storage cell, nickel-cadmium, lithium-ion and nickel metal hydride batteries.


  • On-line testing without shutting down battery
  • AC four-terminal method to eliminate lead resistances and contact resistances, which provides the most accurate results
  • Dual LCD display simultaneously shows the internal resistance and voltage of the battery
  • Built-in data logger
  • Pin type and alligator type 4-terminal Kelvin leads for quick and accurate resistance
  • Comparator function with storage of up to 99 sets of resistance and voltage values for battery deterioration characterization
  • Memory capacity to store up to 999 manually stored data points or up to 9600 points stored using interval data logging
  • RS-232 data port to upload data to your PC
  • Low battery indicator
  • built in zero adjustment
  • Audible tone for warning and failure alerts (can be disabled)
  • Green, yellow and red LED indicators


  • Temperature coefficient: ±(0.1% reading ±5digits)/°C
  • Measuring currency frequency: 1kHz ± 10%
  • Measuring burden voltage: 1.5mVAC
Resistance Ranges: Resolution Approximate Measurement Current
40mΩ 10μΩ 37.5mA
400mΩ 100μΩ 3.75mA
1mΩ 375μA
40Ω 10mΩ 37.5μA
  • Resistance accuracy: ±(1% reading + 10digits)
  • Voltage Ranges:
    • 4V with 1mV resolution
    • 40V with 10mV resolution
    • Accuracy: ±(0.1% reading ±6 digits)
  • Conditions to guarantee accuracy:
    • Temperature: 23° C
    • Humidity: 80% RH or less (non-condensing)
    • Zero adjustment: after zero adjustment for each range
  • Maximum input voltage: 50VDC (no AC voltage)
  • Power: 6 AAA batteries
  • Maximum power consumption: 1.0vA
  • Battery Life: approximately 7 hours
  • Dimensions: 9.75" x 4" x 1.75" (250 x 100 x 45 mm)
  • Weight: 17.5oz (500g) including batteries

Supplied with:

  • Owner's manual
  • Hard blown carrying case
  • RS-232 to serial (DB9) PC interface cable
  • Windows® 95/98/NT/2000/ME/XP compatible software for downloading readings to a PC (CD version)
  • Alligator type 4-terminal Kelvin test leads
  • Pin type test leads
  • 6 AAA batteries
  • 1 year limited manufacturer's warranty
First Product Previous Item Product 13 of 37 Next Item Last Product
Category Power & Circuit Testers
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