ESR on Bald Engineerhttps://www.baldengineer.com/tag/esrRecent content in ESR on Bald EngineerHugoen-USFri, 01 Apr 2022 22:02:27 +0000UPS ESR Battery Measurements | Workbench Wednesdays #32:https://www.baldengineer.com/ups-esr-battery-measurements-workbench-wednesdays-32.htmlTue, 15 Dec 2020 22:57:00 +0000https://www.baldengineer.com/?p=8322As batteries age, their ESR goes up. Eventually, they will no longer be serviceable. A battery measurement tool like the Hioki BT3554 lets field service technicians monitor the help of batteries over time. In this video, see how it can be used to measure a live UPS battery. This episode was sponsored by Hioki.

UPS ESR Battery Measurements | Workbench Wednesdays #32:

Measuring ESR with the PEAK ESR70 | Workbench Wednesdays Reviewhttps://www.baldengineer.com/esr70-measures-esr.htmlWed, 26 Jun 2019 14:50:45 +0000https://www.baldengineer.com/?post_type=link&p=7877There are three capacitor measurements you need to know how to make: capacitance, leakage current, and equivalent series resistance. Capacitance is easy to measure if you have a current limited supply or can use a resistor. Apply a voltage, then time how long it takes to charge up. You might need to use an oscilloscope or even an Arduino for the second part. Leakage current is the easiest of the three, apply a voltage (ideally through a resistor) for a few minutes, and then measure the current. ESR requires some special tricks. Since it is the resistance of the “wires” connecting to the capacitive element’s anode and code, you have to measure resistance without charging up the capacitor. (Otherwise, you get leakage.)

Measuring ESR with the PEAK ESR70 | Workbench Wednesdays Review