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 ...

Building a portable lamp with a 9V battery and LED bulb is a simple, creative DIY project that anyone can try. This video provides clear, step-by-step instructions for assembling a functional lamp ...

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 ...

9V batteries are often found in devices that aren’t used very often. If you use a NiCd rechargeable battery you may find it completely discharged by the time you need it. Capacitors on the other ...

If you have some DIY projects that use 9V batteries, this super small power switch is fairly easy to build and is mostly made from an old 9V battery. Sean Michael Ragan at Make wanted an easy way ...

For example, 9V batteries are basically just six AAAA batteries taped together. As reddit user usgiorgi points out, many larger store bought batteries contain a collection of smaller batteries.

The DIY battery pack here is essentially a USB phone charger that runs off 9V batteries, all dressed up in a fancy aluminum case (i.e., a mint tin). Now, it’s worth noting that you’re not ...