2 Volt

Interested in getting 1.5-volt button cell batteries for pennies on the dollar? Kip Kay, of Make Magazine, is here to show you how. The trick is to buy Energizer A23s, each of which contains 8 1.5-volt button cells. For detailed instructions on this straightforward money-savin ...more

Learn how to charge a 12 Volt Battery using a Solar Power Battery Maintainer by watching this how-to video. This method can be used to charge 12 volt batteries of any kind - cars, trucks, boats, motorcycles, tractors, lawn equipment - any kind of 12 volt battery you can think of!

In this case modding video tutorial, you'll learn how to install a cigarette lighter-style 12-volt accessory outlet into a PC case. Charge your cell phone and other accessories directly from your case with the hack outlined in this video. For detailed, step-by-step instruction ...more

With all the little gadgets people carry around these days, those little cigarette lighter outlets just don't cut it for in-car power sources anymore. Unfortunately, that's often the only option our cars and trucks come with. While you are waiting for the car companies to cat ...more

The XBox 360 is notorious for it's inability to stay cool and the many fatal errors that that has caused. This video will get you one step closer to solving the problem by showing you how to install a 12-volt fan mod in your console. This will make it a little bit louder, but ...more

The XBox 360 runs hot. Really hot. And that is never a good thing for a computer. In fact, it is responsible for the infamous Red Ring of Death that has become synonymous with the XBox 360's poor build quality. This video is here to help solve the problem. It will teach you ho ...more

If you own a VW Beetle Bug, listen and watch. In this tutorial, you'll find out about everything you need to know about the car's voltage. Whether certain myths are true and how to convert a Beetle that has only 6 volts, into one that has 12. So pay attention, take notes, and ...more

Want AAA batteries for cheap? Learn how to hack a 9-volt battery with this money-saving video tutorial from Make Magazine's Kip Kay. All you'll need to replicate this hack at home is a pair of needle-nosed pliers and one or more Energizer 9-volt batteries. For instructions on ...more

Find out how to use a six volt lantern battery to really save you money. This is no con, or prank, or joke that involves 32 AA batteries; this is the real deal. Just watch this money saving video tutorial to see how to hack a six volt battery. You can easily replace a few of t ...more

If you're out in the wilderness at night and it's starting to get chilly, you sure as hell better know how to make yourself a campfire. But let's just say you forgot your matches and don't feel like rubbing two sticks of wood together hoping to create a spark. If you have a 9 ...more

In this clip, learn how to make super powerful 9 volt LED flashlights using things you most likely already have around the house. You will make these mini-lights out of things like batteries and scrap wires. So, dig around in your garage and see what you can find to get starte ...more

Learn how to make a magical looking fire with steel wool and a 9 volt battery.

Mr.G shows you an experiment in which you can create pulse DC current (which mimicks AC current) from a nine-volt battery.

Hide your money, small candies or other tiny items you want to keep hidden! Pry off the top of the battery, take out the innards and then rebuild the casing to re-camoflauge the battery. Then you're ready to hide your goodies!

Change a normal 9v battery into a life saver. If you have ever run out of juice on your phone and could really use a quick charge then you need a USB battery. list: 1 5.1v zener diode 1 330-ohm resistor 1 9v battery connector 1 9v battery solder and soldering iron (you can ge ...more

Materials needed: Altoid mint tin, 9 volt batter and connector, switch, 7812 voltage regulator, 12 volt computer fan, carbon filter and 2 pieces of screen. Wire the battery connectors. Solder all of the following: Negative connector to the switch, wire to the switch, ground wi ...more

In this how-to video, some children demonstrate one of the techniques for starting a fire when you don't have a lighter, matches, lighter fluid, or anything like that. Here we see how to start a fire using just a 9 volt battery and some steel wool. TO start a fire using just a ...more

This video tutorial from OzLabs will show you how power the one-watt high powered LED using 120 volt source using a 12 volt adapter.

Build your very own Trek-style Blu-Ray laser phaser with this hacker's how-to video from Kip Kay of Make Magazine. To replicate this hack at home, you'll need the following materials: (1) a PS3 Blu-Ray laser assembly (which can be had on eBay for roughly $45), (2) an original ...more

This video shows you how to make a prank toy called "The Evasive Beeping Thing." You will need: a 555 timer, a couple of 3904 transistors, a couple of capacitors, some resistors, a 9-volt battery clip, a small speaker, and a small piece of circuit board to settle everything. F ...more

Steve of Element Tattoo Supply demonstrates how to set up a tattooing power supply, specifically the Silver Bullet model. It has a voltage switch on the back. If in the US, set the power supply to the 115-volt setting. Outside the US, switch to the 220 volt setting. There are ...more

So, your children have the same old boring Fisher-Price Power Wheels that all the other kids on the block have. Do you really want your child to be like all of the rest? No, I didn't think so. Turn those miniature Power Wheels, Dumar or Peg Perego vehicles into a little bit of ...more

Charge your cell phone, mp3 player or other USB-equipped device with the power of the Sun! All you need is a 6-volt solar panel and a female USB cable. Solder them together (this video demonstrates how), and then you have a solar powered USB charger!

The XBox 360 has mammoth cooling problems, and people have devised all manner of products and mods that address that. This video will show you how to install one of those products: heat sinks that will cool your motherboard directly. This will keep you XBox a lot cooler withou ...more

Garden of Imagination demonstrates how to make a real working miniature chandelier light for a doll house. We need some cord wires, beads, an electric bulb of 12 volt and plugs. Take the cord connected to a plug and remove the metal tips and remove the plugs. There will be tw ...more

If you're a geek, then this power pack will give you a total techgasm. The power pack allows you to charge pretty much anything you can fit into a 12 volt power jack in your car (where the cigar/lighter receptable goes). The power pack is a portable battery, so no need for cha ...more

Create a miniature hover craft from the fan, polystrene or Styrofoam plate, batteries and double-sided scotch tape. It really works. Powered by two 9 volt batteries you can use paper plates for the body of the hovercraft if need be. This is a cool cat toy or just a household h ...more

Save tons of money by building your own LED pen that works with a multitouch smart board / whiteboard. You'll also need a WiiMote (Wii Remote) to use in conjunction with your homemade LED pens that you'll be making in this video. To get started with this awesome project, you'l ...more

This video demonstrates the relationship between electricity and magnetism and shows how to construct an electromagnet using a 4 inch iron nail, 5 meters of copper wire and a 1.5 volt AA battery. Electromagnetism was discovered by the Danish scientist Oersted. Electromagnetism ...more

Your car's electrical system is massive and complicated. Trying to find a short in the system might sound like a job for a professional, but in this video you will learn how you can use an $8 test light to locate a shorts in your car's electrical system. It will also teach you ...more

If you're doing any sort of electrical work at home, a multimeter is an invaluable tool to have. But as invaluable as it is to have a volt/ohm meter, it is obviously even more invaluable still to know how to use one. And, with this electrician's how-to, you'll learn how to do ...more

Ever thought your flashlights weren't giving out enough light? Well, change that; watch this video tutorial to see how to make the world's brightest LED flashlight. You will need a vohm meter (volt-ohm meter), wire, thermal paste, a Dorcy flashlight, a soldering iron, and a 90 ...more

Ever wonder what happens to a penny when an electrical charge is applied to it? Well, you'll find out in this science lesson that shows you how to dissolve a penny with a power adapter. You'll need a 12-volt power adapter, a bolt, about 50 grams of salt, an alligator clip (or ...more

Take apart a 9V battery and turn it in to Six AAA batteries. This way you save money. amazing science experiment trick. This is a simple battery deconstruction that results in a 9 volt battery's dissection into six AAAA batteries. They are not AA or AAA, but a kind you won't f ...more

Make a $100 super bright cop flashlight for less than $10, as shown in the steps of this how-to video. This flashlight is brighter than a Surefire and is so easy to do. You will need a compact flashlight, a Krypton flashlight lamp, a file or drill bit, and 3 volt batteries. Wa ...more

Forget the sticks and drop the matches, Joe Kelley shows you the easiest way to start a fire in the woods: steel wool and a battery. All you need to do is touch the volt battery to the steel wool. Watch this video camping tutorial and learn how to start a fire with steel wool ...more

Build a fire without matches or a lighter so you wont freeze to death or attract predators in the wild. The finer the steel wool, the better. Most batteries will work but 9 volt batteries are the easiest.

This is a tutorial for how to use a multimeter to take volt and amp measurements of a silicon solar cell and solar modules.

Gary explains the voltages present on the pitch bend pot and how to determine it is working correctly. Use of a volt ohm meter is explained in the process.