Battery tester is a device used to check the charge level, capacity, or overall health of a battery. It can measure voltage, current, and resistance to determine whether a battery is functional or needs to be replaced.
Basic Voltage Testers: Measure the voltage of a battery to determine if it is charged.
Load Testers: Apply a load to simulate real usage and test the battery’s performance under strain (common for car batteries).
Digital Battery Analyzers: Provide detailed metrics like state of charge (SoC) and state of health (SoH).