Batteries, current, and Ohm\'s law
Battery Recycling

Battery Recycling Requirements, Opportunities, Statistics and Addresses

Build your own laptop battery... or not - Engadget
DoChem 116 Copper/Zinc Galvanic Cell (Daniel Cell)
How can I make an electrical battery at home? (Simon Hooks)

Ask the experts your physics and astronomy questions, read answer archive, and more.

Laptop: build your own battery (Hans Schou, 2001)
Make Your Own Battery (Anthony F. Gilberti)
Make Your Own Lemon Battery

GB-4000 Frequency Generator, Ultimate B3, Life Force 2000, Edgar Cayce Violet Ray, Rife Machine, Colloidal Silver, Ancient Geometry, Sacred Geometry, Advanced Bio-Photon Analyzer, Aqua Chi, Q2, BEFE, Photon Sound Beam, Photon Genie, Photon Genesis, Molecular Enhancer, Body Charger, Psychotronic, Psionic

The Steam Battery: A Low-Cost Science Experiment Performed with Ordinary Materials (Mark Valentine, 2005)