Review on π Digital Automotive Battery Tester with Internal Resistance Meter & Backlight - Car Vehicle Lead-Acid Battery Capacity Checker, Voltage Tester, and Analyzer by allsun by Ryan Hoover
Seems to work as advertised.
The meter shows different internal resistances for different batteries and a high internal resistance for batteries that are known to be defective. No idea to be exact. Battery voltage mode is 0.1V higher than calibrated multimeters.
- Free for training purposes
- Quick start guide
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