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Model BT12 Battery Tester


Two factors determining the internal resistance of a battery are electrical resistance and ionic resistance. The model BT12 detects the overall resistance using a four-wire method and a low voltage AC signal at 1 kHz.

A low internal resistance is an indicator of good battery health. Conversely, a high resistance represents a lower battery capacity, or internal deterioration. Trending these measurements over time helps prevent problems down the road.

With the model BT12, preset Pass, Fail, and Warning thresholds can be set. Stored measurements can be downloaded by USB connection.

Available on backorder

SKU: BATBT12-0 Category:


Details about the Amblyonix Model BT12 Battery Tester

Specifications of this Battery Tester

Resistance measurement range: 3mΩ/30mΩ/300mΩ/3Ω
Resolution: 1uΩ/10uΩ/100uΩ/1mΩ
Resistance Accuracy: 1%
Voltage measurement range: 7V/70V
Resolution: 1mV/10mV
Voltage Accuracy: 0.5%
Temperature measurement range: -10.0℃~60.0℃
Resolution: 0.1℃
Temperature Accuracy: ±1.0℃
Measurement method: 1kHz AC 4-terminal test method, open circuit terminal voltage 3V max. with a measuring current between 2.0mA and 200mA (dependent on range).
Temperature measurement: NTC temperature sensor (10K Ω at 26 ℃)
Measurement time: about 2 seconds
LCD display: 70.1mm × 52.6mm (2.75 x 2.0 inches)
Communications: USB or Bluetooth
Storage data: Up to 5000 sets of data
Power supply: DC 3.7V rechargeable lithium battery
Insulation resistance: above 20MΩ (500V between circuit and shell)
Transit Case Dimensions: 13 x 10 x 4.25 inches
Standard: IEC 61010


  • Four wire measurements
  • 3mΩ/30mΩ/300mΩ/3Ω range
  • 7V/70V range
  • Temperature measurement capability
  • High resolution 1uΩ and 1mV
  • Noise reduction technology
  • Battery or line powered
  • USB port and Bluetooth

Supplied with manual, test clips, power adapter, temperature probe, and locking metal transit case. 1-year parts and labor warranty.

Additional information

Weight 3 lbs
Dimensions 14 × 12 × 6 in