STS Model 1656/1657 Battery Element Testers for Production Quality Test

Battery Element Tester

All STS Battery Element Testers provide a unique method for the detection of assembly level insulation defects in lead-acid batteries, including missing and damaged separators. Detection of such faults prior to filling and charging the battery minimizes costly reclamation. Traditional AC dielectric tests can detect such faults, but may produce damaging heat in moist cell applications. To overcome this limitation, STS has developed testers that employ a high-voltage, short duration pulse to maximize stress to the dielectric material while minimizing average energy. The goal is to provide sufficient stress to cause current flow in the presence of a failure. This technique allows reliable fault detection while eliminating damage due to overheating that may occur with an AC test.


All testers feature an adjustable test voltage with a peak output of 3,000 volts, accommodating a wide range of separator spacing and types. Durable solid state switching of the high voltage assures reliability for high volume applications. Easy-to-read displays provide readouts for applied voltage and quality readback. Following a simple setup procedure, operation is go/no-go, and requires no operator interpretation of results. The test voltage is applied using included safety probes. When a failure occurs, the high voltage is shut off and both audible and visual alarms warn the operator of the failure.


Available Models

  • Model 1656 - Digital Battery Element Tester - Rack Mountable (NEW) (CE Compliant)
  • Model 1657 - Digital Battery Element Tester - Bench Model (NEW) (CE Compliant)
  • Model 1656 Auto-Line - Six Channel Multiplexer - Rack Mountable (NEW) (CE Compliant) works with either 1656 or 1657 Battery Element Tester

Ordering Information


1656 Digital Battery Element Tester. Rack Mountable Cabinet


1657 Digital Battery Element Tester


1656 Auto-Line High Voltage Channel Multiplexer for use with 1656 or 1657



-RS232         RS232 Serial Interface

-RS485         RS485 Serial Interface, Multi-drop

-RPC             Rear Panel HV Connections

-TT                TT1652 Test Trigger Input Mode compatible with 1652