Reference only — this item is no longer available. This product has been discontinued and cannot be ordered. We keep the page online so the specifications and documentation stay available to anyone still running the equipment. Current replacements are listed further down.

Discontinued

Extech Battery Capacity Tester (BT100) with Datalogger & Software

Reference only — not for sale

Model	BT100
Manufacturer	Extech
Category	Power Testers
Status	Discontinued

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Product details (archived)

The information below is retained for reference only. This item is discontinued and cannot be ordered.

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.

Features:

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

Specifications:

Temperature coefficient: ±(0.1% reading ±5digits)/°C
Measuring currency frequency: 1kHz ± 10%
Measuring burden voltage: 1.5mVAC

Resistance Ranges:	Resolution	Approximate Measurement Current
40m ohms	10 microns; ohms	37.5mA
400m ohms	100 microns; ohms	3.75mA
4 ohms	1m ohms	375 microns;A
40 ohms	10m ohms	37.5 microns;A

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