battery powered automobile

I recently bought an Arduino Diecimila board. It's awesome and the applications, you can use it for or with is almost unlimited. However there's a problem when you want to use it in portable applications. You can use the Liquidware lithium backpack, which is a good way to power the Arduino. There's ... By: Sometimes your laptop computer, your lamp or even your car need to be powered and what you have are batteries only. I have had the experience on using 20 AA batteries (packaged in 15V) to jump start my car. In case of emergency, maybe you can power EVERY DEVICE which you MUST. what you need wha... By: Have any of your SLA's dried up? Are they low on water? Well if you answered yes to either of those questions, This Instructable is for you DISCLAIMER I TAKE NO RESPONSIBILITY FOR ANY SPILLAGE OF BATTERY ACID, INJURY, STUFFING UP A GOOD SLA ETC. Materials/Tools Tools Safety Glasses (So you don'... By: A very simple method to get double output voltage within the space of a single AA battery. Useful for strengthen your single battery powered device, eg. flash light, nose hair trimer and etc. reason Sometimes you are not satisfy with the POWER of your single battery powered device, such as your di... By: Here is a list of things that you shouldn't do with electricity. You should read this, because otherwise, you might have to buy more of what you broke or get hurt. This is especially something a beginner with electricity should read, because a lot of people will do these things carelessly. If you w... By: A LED Parachutie is basically a LED Throwie with a small parachute attached to it. You can toss it out from a tall building, bridge, mountain etc. When it's dark, you don't see the parachute itself, but only a flying light. It looks pretty cool. This is a great little project for kids, since it's e... By: Light up turkey/duck great for the holidays!!! What You Will Need, 220-ohm resistors 1/2 watt 5% tolerance bicolor L.E.D 2.8v 22 gauge wire Floral Wire 9v Battery Clip 2 AA battery pack tools- soldering iron with solder glue gun with glue(optional) wire cutters wire strippers First Step first ... By: Do you need a 9V connector, but don't have any lying around the house.... all you need is an empty 9V battery what do you need you will need: discharged 9V battery 2 pieces of wire snippers soldering iron + solder pliers shrink tube Taking the pieces you will use take the battery and gentl... By: No it's not a Lettuce, Tomato, Mutton, & Turkey Sandwich. It's a Light's To Music Tin. This is how to build one If anything doesn't make sense please let me know. I'm try to keep my instructables so everybody can understand them. One down side of this is on an iPod the volume has to turned all ... By: Are you tired of having your Ni-Cad batteries that refused to charge and simply die? So what do you do with them when they die? Just throw them in the trash - which harms the environment? Or just take them to a recycling facility for them to be recycled? Well, here is the best solution, bring yo... By: I've always wanted to build a battery drainer but I never expected it going to be in a lolly-pop container! Also, this is IR (infrared) so you can have it on at night and it will not stop you from sleeping! (PS: Sorry about the photos.) Parts You will need: 1 1.2v IR LED 1 empty Thumb-Pop conta... By: This instructable will show you how to get back to drving your EP(elctric power) RC car. Materials Needed Here is an easy list of what you need for this project. The total cost of this project is about 35$, depending on what materials you already have. 1-Ultrafast universal battery charger. Buy a... By: Attaching the leads of an LED to a battery clip is hardly amusing. This is my best attempt at livening it up a bit. When you are done, all you will have to do to test an LED is place it in the hooks that you make with the wire. Materials The materials are relatively easy to find: Playmobil t... By: A step-by-step tutorial showing how I repaired my $60 Dirt Dog battery with just a AA battery and some tape. We start off with a Dirt Dog battery that has a voltage of 15.87V which is indicative of a bad cell. When we complete the repair we are at 17.12V and that is without even charging the pack. ... By: WARNING! This instructable involves modifying CCFL's, which run on very high voltages! This is VERY DANGEROUS, so you shouldn't do t