With recharge times as quick as 75 minutes to 80%, Ernie Ball guarantees that these batteries deliver a “consistent, ...

Since I’m starting to use more 9V rechargeable batteries, I thought it would be a good idea to build a simple 9V rechargeable battery for my friendly guitarist instead of having to urge him to look ...

If you’ve ever gotten into electronics hacking, you’ve probably had the illusion of most gadgets ruined for you. For example, 9V batteries are basically just six AAAA batteries taped together. As ...

MIAMI (WSVN) - Strong storms, like Hurricane Irma, can cause power loss potentially for days. Luckily, there is a “hurricane hack” that shows a way to charge your smartphone via a 9-volt battery. In ...

When you’re building your own custom electronics projects, a simple power switch isn’t always easy to find. If you have some DIY projects that use 9V batteries, this super small power switch is fairly ...

In this article, I will take apart a Li-ion alternative to the classic 6F22 9V battery. This battery is a Chinese 9V/500mAh USB rechargeable Li-ion battery (sold under the brand name infinite). The ...

It’s pretty creative to use a 9v battery as an enclosure. That’s what [Osgeld] did when building this amplifier. There are several advantages; they’re easy to find, it keeps a bit of the dead battery ...

If you’re looking for a neat DIY project this weekend, then this DIY 9V Battery USB charger could be a fun gadget to create. With only a few components, including a 9V battery, a female USB port from ...

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 ...

Old American radios (and we mean really old ones) took several kinds of batteries. The A battery powered the filaments (generally 1.5V at a high current draw). The B battery powered the plate (much ...