MERIDIAN -- Metal screws, paper clips, old receipts and even hair pins -- all of those common household items can be deadly if mixed with a 9-volt battery. In 2008, Meridian firefighters responded to ...

Smartphones are more powerful than ever, but they still have an annoying tendency to run out of juice just when you need them most. The Kickstarter-backed Plan V could get you out of such a fix, as it ...

A video and various news reports state that 9-volt batteries can be a fire hazard. The facts: Various warnings from fire experts across the country say this is true. The warning was first reported in ...

CLEVELAND -- Stranded on the side of the road with a dead car battery and a dead cell phone? Not if you keep a 9-volt battery handy in your glove compartment. It's possible to revive a dead cell phone ...

Mount Olive fire marshals have issued safety warnings about the storage of an item most of us have lying around the house — batteries. Two 9-volt batteries were the cause of a small fire in a township ...

Use every drop of energy from a 9-volt battery by adding it to an LED Blocklite. I was always stumped about what to do with partially depleted, 9-volt smoke detector batteries. They’re usually drained ...

Serving tech enthusiasts for over 25 years. TechSpot means tech analysis and advice you can trust. Buying a 9-volt battery is now the simplest way to upgrade your home to a smart home. The Roost Smart ...

While it’s the easiest way to lay out a simple circuit for prototyping, breadboards are a pain. They are the ultimate kludge; they work well enough, but no one will ever say that a solderless ...

A 555 timer can be used to generate a squarewave to produce a negative voltage relative to the negative battery terminal. When the timer output at pin 3 goes positive, the series 22 uF capacitor ...

When working around mains voltages, it can be useful to know whether a given circuit is live or not. While this can be done by direct connection with a multimeter, non-contact methods are available ...