When your car doesn’t start, often a low or dead battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best ...

The battery on my aging Lenovo 230x goes from 60% to 10% very quickly. I don't mind investing $50 in a new battery to save from buying a new laptop, How do I measure the the capability of a new ...

The better the analog front-end for measuring battery current, the more accurately you'll be able to gauge the remaining run-time for your battery-backup system. Here's a discrete front-end design ...

It is practical to characterise charge/discharge cycles of rechargeable batteries using an SMU (single-source measurement unit), writes Mary Anne Tupta from Keithley Instruments. Rechargeable ...

Santa Clara, Calif.—Measuring the performance of battery-powered units used to be easy: measure the current via a resistive or inductive shunt pick-off while monitoring the terminal voltage, end of ...

The simplest complete circuit is a piece of wire from one end of a battery to the other. An electric current can flow in the wire from one end of the battery to the other, but nothing useful happens.