I recently got an assignment to design a battery charger. I decided to use the BQ2000TSN from Texas Instruments because of its versatility in battery chemistry. In my case the battery charger is used ...

Have a hard time finding a use for the other 9 volt battery you got in that 2-pack? Look no further that Richard Lawson’s charming DIY LED light: 9Vo(l)tive. Just stick one of these suckers on a 9 ...

When the power goes out, scrambling for a flashlight can be frustrating. Light bulbs with backup batteries solve this by providing light even during an outage. These innovative bulbs charge their ...

A blast from the Elektor archives: this 1998 battery tester uses a simple LED display to reveal a battery’s true condition under load — even below 1 V.

Taiwan-based electronics manufacturer Para Light Electronic has added a new integrated solar light emitting diode (LED) streetlight for pedestrian walkways and roads to its line of outdoor lighting ...