Pak-Lite 9-Volt LED Flashlight ... Infra-red, “Patriot” and “Flasher” editions costs $29.99 each. And of course, they come with the 9-volt battery already included.

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 ...

The 9Volt puts those extra 9-Volt batteries to use, in something other than your smoke detector, as an environmentally friendly LED light who’s ambiance represents that of nice candlelight.

Recently, however, I found a little LED Blocklite flashlight that does use a 9-volt battery. For about $5, you can turn your old battery into a compact — and surprisingly bright — flashlight.

All you do is press the Snap onto the top of a regular battery, and you've got a working single-LED flashlight. Not going to light up the moon with that, but kids will love it and they'd be handy ...

Consumers use 9V batteries in the home and office. Many smoke detectors use this type of battery, as do clocks, some types of flashlights and walkie talkies. Owners of a 9V battery should check a ...