Updated Jul-19-2010
How to change the batteries on Spykee, the robot.
Spykee came back to life when attached to a 12V portable battery.
Continue reading ‘Repairing and Replacing Batteries on a Spykee Robot’ »
Posts tagged ‘battery’
This little girl says the funniest things.
From the summer of 2008 when I started to get serious about solar panels.
Made a quick rocket stove with bricks. Put a Peltier cooler on the back and got a fire going. Measured the current, volts, and watts produced from a single Peltier cooler. A cooling fan and aluminum heatsink with a 12V portable battery helped.
Peltier Cooler (also called TEC or Thermo Electric Cooler) - resting against a hot brick
Video of experiment…
A 12V battery is getting low and needs some wind to charge up. The wind turbine outside faithfully stands watch high above the ground, waiting for a chance to spin in the wind.
Review of a 12V splitter. This is also called a 3-way cigarette lighter adapter .
12V adapter-splitter review
This adapter plugs into a single 12V battery outlet and splits it into three outlets. Could be used to power three gadgets from your car or from wherever else you have a 12V outlet. I have one in my house for off-the-grid backup power.
Video review…
Make Your Own Air Battery
The video below shows three different electrolytes for a cell. Which electrolyte will be the best, producing the most voltage and current?
Edited Jun-10-2010
Acid can release electricity from metal. What is an easy-to-find source of acid? Tomatoes!
The video above shows how an LED and a buzzer are powered by a tomato battery. It’s just two different metals dipped into mashed tomatoes. It even helps charge a AAA battery.
How does this work?
Charging a Cub Cadet lawnmower 12V battery with a solar panel and Sunsei charge controller.
Continue reading ‘Solar Panel Charging a Lawnmower Battery’ »