A battery load tester can perform all kinds of analysis, from warning you of low charge to identifying potential faults in your alternator. Regularly checking your battery highlights problems before ...

The simplest model of a battery comprises an ideal voltage source that connects in series with a resistance whose value—often a few milliohms—depends on the battery’s electrochemical condition and ...

Most rechargeable battery-powered systems include a switch that connects the load either to the battery or to a source of charging power. This switch allows a system with a depleted battery to operate ...

Because stationary batteries and 48VDC power systems serve as lifelines for telecommunication networks, the reliability of these systems is of the utmost importance. Many system designers rely on ...

Designers of wearables — including smartwatches, fitness trackers, heart monitors, and many other devices — are constantly trying to find ways to increase battery life in order to improve user ...

A critical component of any backup energy system is energy storage in the form of batteries. However, it is essential to consider the pros and cons of different battery technologies before buying a ...

Editor's Note: March 16, 2026: We've added a section answering some frequently asked questions related to purchasing a UPS backup at the end of this story, which we hope will help you figure out how ...