Automotive Battery Testers and Test Equipment for Battery and Charging Systems

Frequently Asked Questions About Battery and Charging System Testers

Battery testers provide more information about a starter battery than a simple voltage measurement and also assist in diagnosing starting and charging systems. The following questions explain which batteries can be tested, which measurements are important, and how battery testers differ from other electrical measuring instruments.

• What does a battery and charging system tester check?

  A battery and charging system tester is used to evaluate a vehicle’s starter battery as well as its starting and charging systems.
  
  The DBP 04P can be used to determine, among other things, the battery’s condition, state of charge, internal resistance, and cold-crank current.
  
  In addition, the generator or alternator and the starter motor can be included in the diagnostic process.

• Which batteries can be tested with the DBP 04P?Which batteries can be tested with the DBP 04P?

  The DBP 04P is suitable for 6- and 12-V batteries.

  It supports:

  • Flooded batteries
  • AGM flat batteries
  • AGM spiral batteries
  • EFB batteries
  • GEL batteries

  This allows you to test numerous starter batteries used in passenger cars and commercial vehicles.

• Can a 24-V battery be tested using the DBP 04P?

  No. Here, a distinction must be made between battery testing and charging system testing.

  The DBP 04P is specified for testing 6- and 12-V batteries.

  Charging systems, on the other hand, can be tested at 6, 12, and 24 V.

• Can 24-volt charging systems for commercial vehicles be tested?

  Yes. The DBP 04P is suitable for 6-, 12-, and 24-V charging systems.
  
  This means it can also be used to test compatible 24-V charging systems, such as those used in trucks, buses, and other commercial vehicles.
  
  However, the actual battery test is limited to 6- and 12-V batteries.

• Can a car battery be tested while it is installed?

  Yes. The DBP 04P can be used to determine the performance of a suitable battery, whether it is installed or removed.
  
  This allows the battery to be tested directly in the vehicle for many diagnostic tasks.

• What values are measured when testing a car battery?

  Among other things, the DBP 04P measures and evaluates:

  • Battery condition
  • State of charge
  • Internal resistance
  • Cold-crank current

  This provides the repair shop with significantly more information about the condition of the starter battery than a simple voltage measurement alone.

• Is the battery voltage sufficient to assess the condition of a car battery?

  No, measuring voltage alone does not always provide a sufficient assessment of a starter battery’s actual performance.

  A professional battery tester takes additional parameters into account, such as internal resistance and cold-crank current.

  For simple voltage, current, and resistance measurements, multimeters designed for automotive and commercial vehicle repair shops can also be used.

• What is the difference between a battery tester and a multimeter?

  A multimeter measures electrical quantities such as voltage, current, or resistance.

  A battery tester, on the other hand, is specifically designed to assess the condition of a starter battery and—depending on the device—the starting and charging systems as well.

  For a comprehensive diagnosis of the automotive electrical system, a battery tester and a multimeter can therefore complement each other effectively.

• Can an AGM battery be tested with the DBP 04P?

  Yes. The DBP 04P supports both AGM flat batteries and AGM spiral batteries.
  
  Before testing, you must select the battery type or test standard that matches the battery on the device.

• Can EFB and start-stop batteries be tested?

  EFB batteries are explicitly included among the battery types supported by the DBP 04P.
  
  AGM batteries can also be tested. Both battery technologies are frequently used in vehicles equipped with start-stop systems.
  
  It is crucial for the test that the battery type, voltage, and test parameters fall within the tester’s specifications.

• Can GEL batteries be tested with the battery tester?

  Yes. GEL batteries are among the battery types supported by the DBP 04P.
  
  When testing, the specific battery type and the battery specifications must be taken into account.

• What battery standards does the DBP 04P support?

  The battery tester supports nine international battery standards:

  • CCA
  • SAE
  • EN
  • EN2
  • IEC
  • JIS
  • DIN
  • CA
  • MCA

  To ensure accurate testing, select the test standard specified for the battery in question.

• What does CCA, or cold-cranking amps, mean?

  CCA stands for “Cold Cranking Amps” and refers to the cold-cranking current of a starter battery.
  
  Simply put, this value describes the battery’s ability to supply the current required to start the engine at low temperatures.
  
  The DBP 04P can determine the battery’s cold-cranking current and supports various international battery standards for this purpose.

• Why is a battery's internal resistance tested?

  Internal resistance is one of the parameters that can be used to evaluate a starter battery.
  
  In addition to battery condition and state of charge, the DBP 04P also measures internal resistance, thereby providing additional information for evaluating the battery.

• Can the battery tester also be used to test the alternator?

  Yes. With the DBP 04P, you can test not only the battery but also the charging system—or the generator, commonly referred to as the alternator.
  
  This makes it easier to determine whether the cause of starting or charging problems lies with the battery or the charging system.

• Can the starter motor also be tested with the DBP 04P?

  Yes. The tester is designed to check the battery, alternator, and starter.
  
  This allows multiple components of the starting and charging system to be included in the vehicle diagnostics.

• Can a lithium-ion battery be tested using the DBP 04P?

  Lithium-ion batteries are not listed as a supported battery type in the technical specifications for the DBP 04P.

  The device should therefore not be used to test lithium-ion batteries unless expressly approved for that purpose.

  This applies in particular to high-voltage traction batteries in electric and hybrid vehicles. Work on high-voltage systems requires specially designed electrical safety test equipment for electric and hybrid vehicles.

• Can the DBP 04P test the high-voltage battery of an electric vehicle?

  No. The DBP 04P is designed for use with suitable starter batteries and vehicle charging systems within its specified voltage ranges.
  
  Testing a high-voltage traction battery requires diagnostic and measurement procedures specifically designed for this purpose, as well as appropriate safety equipment.

• Why is maintaining voltage a different issue when replacing a battery?

  A battery tester assesses the condition or performance of a battery.

  A voltage maintenance system serves a different purpose: It continues to supply power to the vehicle’s electrical system during certain tasks—such as when replacing the starter battery—to ensure that stored vehicle data or settings are not lost unnecessarily.

  Suitable devices can be found in the Emergency Power Supply and Voltage Maintenance section.

• Why is it useful to have a built-in printer on a battery tester?

  With the DBP 04P's built-in printer, measurement results can be documented immediately after testing the battery or charging system.
  
  The test report can be used, for example, for workshop records or to provide information to the customer.

• Can the measurement results from the DBP 04P be saved digitally?

  Yes. PC software is available for the DBP 04P.
  
  This software can be used to document and archive measurement reports. It can also be used to update the device's firmware.