Tester for batteries < 500 Amp (loading plug) DK DK242050

A battery tester usually works on the principle of a loading plug. It is connected to the battery terminals and creates a load, imitating the operation of the starter. The device determines the state of the battery by the time the starter is cranked and the voltage under the load.

Main functions

• Voltage Check: Measures battery voltage at rest and under load.
• Measurement of internal resistance: Shows the internal resistance of the battery, which allows you to evaluate its ability to deliver current.
• Capacity check: Some models can estimate the approximate battery capacity.
• Diagnostics of sulfation: Detects the presence of sulfation of the plates, which leads to a decrease in battery capacity.
• Cold start current test: Determines the battery's ability to provide a large starting current at low temperatures.

Types of battery testers

• Analog: The simplest and cheapest, show the results in the form of an arrow on the scale.

• Digital: More accurate and functional, display results on a digital display. May have additional functions such as memory of results, backlighting of the display, etc.
• Professional: They are used at service stations and have extended functionality, allowing for more detailed diagnostics of batteries.