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 ...

A man is drawing the attention of internet users after revealing a trick to find out how long your car battery will last.

Members can download this article in PDF format. Portable and mobile products require sophisticated battery-management circuitry to extend battery life and avoid unexpected shutdowns. A key ...

Although a power supply and a DMM are fine for some measurements, there are many advantages to having sourcing and measuring in the same instrument. Yet many engineers I encounter are not familiar ...

Self-discharge is a normally occurring phenomenon in lithium-ion battery cells. A normal cell may have a self-discharge rate of 1% state of charge (SOC) per month. The normal self-discharge rate is ...

Current is a measure of how much electric charge flows through a circuit. The more charge that flows, the bigger the current. Current is measured in amperes. The symbol for ampere is A. For example, ...