Project Description

Product Overview

Regular maintenance and test is a “must-have” procedure for standby batteries. It is also recommended by IEEE latest standard for maintenance and testing of standby batteries. The excellent performance of BT 3915 /BT 3918 for testing cell internal resistance/conductance and voltage will help you eliminate the weak batteries and ensure their performance.

You can use either Test Clip or Probe Pin to conduct your test, bellow image would show you the right way to use them:

Test Clip

Probe Pin

  • Two-in-one: switchable between internal resistance and conductance measurement

  • Wide test range: 5~6000Ah, compatible for cell of 1.2V, 2V, 6V and 12V

  • Smart and portable hand-held device, rugged and easy-to-go

  • Colorful touch screen with optional operations of keyboard and touch screen

  • Simultaneously test voltage and internal resistance/conductance

  • Fast testing for battery and string in seconds with testing data auto saving

  • Strong anti-interference in high current with stable and accurate performance

  • Low testing frequency, effectively avoid interference from capacitive resistance

  • Direct USB drive for software update and data transfer to computer

  • Big memory for testing data storage of more than 3000 cells

  • Buzzer alarm function and over voltage protection

  • Auto-calibration function before testing enhances the testing accuracy

  • Build-in reference value and self-defined value for comparison of testing result

  • Retest and compensation function: any faulty operation or omission could be retested simply with one click

  • Intelligent & powerful data viewer, capable of thousands battery data management. You can view your data & analyze on PC & phone and download report to excel anytime

Resistance Range
Conductance Range
100~19990 Siemens
Voltage Range 0.000V-16V
Resistance Minimum Test Resolution 0.1 mΩ
Conductance Minimum Test Resolution 0.01 s
Voltage Minimum Test Resolution 1 mV
Resistance Test Accuracy ±1.0%rdg±6dgt
Conductance Test Accuracy ±1.0%rdg±6dgt
Voltage Test Accuracy ±0.2%rdg±6dgt
Power Supply Li-ion battery(7.2V 2400mAh)
Working Time More than 5 hours
Measuring Data Memory >3000 cells
Operation Environment 0℃ to 40℃, 90% R.H
Measuring Cells Per String 1≤cells≤254
LCD Display 320*240 pixel, 3.5″ TFT Screen
Net Weight 2 kg
Dimension L210*W110*H60 mm

Easy to test Battery Resistance/Battery Conductance

  • Connect Test Clip or Probe Pin to the test battery correctly, turn on battery tester and click “Test Cell”

  • Our battery tester could test 1.2V, 2V, 6V and 12V battery cell, chose the right “Voltage”(battery voltage) and “Cell Rating”(battery capacity), then the standard “Ref Res” (Reference Resistance) would showed accordingly, if all parameter is correct, click “Start” to start the test, if any of them is incorrect, please click “Set Para” go to Self-defined parameter page to customized the right parameter for your battery, then click “Add” back to previous step

  • It’s the same procedure to use BT3918 to test battery conductance

View the BT3915/BT3918 test & analyze data on PC & Mobile

  • Go to the link with web browser Chrome (, create/login with your own account.

  • After login, create company>station>group, then upload the test date of each battery to specific group the battery belongs to

  • Then you could view the battery test and analyze date online anytime, or you could also “download” it into Excel