Extech BT100 Battery Capacity Tester


Battery capacity tester, capable of simultaneous resistance/voltage measurement and built in datalogger, perfect for on-the-spot checks.

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inc VAT £624.00 ex VAT £520.00
In Stock - Available Next Day

Product Details

Extech BT100 Battery Capacity / Condition Tester

Check battery condition in seconds, even if the battery is in service, with the Extech BT100 Battery Capactiy Tester. Able to assess a range of battery types including nickel-cadmium batteries, lithium-ion, lead storage cell and nickel metal hydride batteries, the BT100 has a 1kHz test current and dual display for ease of use.

Measuring the internal resistance and output voltage of a battery simultaneously, the Extech BT100 also contains a built-in datalogger capable of storing up to 999 tests and comes packaged with software for downloading readings direct to a PC.

  • Simultaneously measure battery resistance and voltage
  • Capable of on-line testing without shutting down battery
  • Built-in datalogger storing up to 999 tests
  • PC software for downloading measurements to a PC
What's In The Box?
  • Extech BT100 Battery Capacity Tester
  • Software and connectivity cable
  • 2 x Kelvin alligator clips
  • 2 x Kelvin test leads
  • 6 x AAA batteries
More Information


  • Range: 40mΩ, 400mΩ, 4Ω, 40Ω
  • Resolution: 10μΩ, 100μΩ, 1mΩ, 10mΩ
  • Basic accuracy: ±(1% reading ± 8d)


  • Range: 4V, 40V
  • Resolution: 1mV, 10mV
  • Basic accuracy: ±(0.1% reading ±6d)
  • Max Input Voltage: 50VDC


  • Power: 6 AAA batteries
  • Battery life: 7 hours
  • Dimensions: 9.75 x 4 x 1.75" (250 x 100 x 45 mm)
  • Weight: 17.5oz (500g)