Battery

Many electronic devices run off batteries.

There are a surprising number of myths and urban legends about batteries (such as the "memory effect" near-myth and various ways of "fixing" it). Also the process of charging them up.

further reading

• "Performance Measurements of Some NiMH Battery Chargers" by Matt Blaze
• "The Great Battery Shootout" by Dave Etchells
• Wikipedia: Battery (electricity)
• Wikipedia: memory effect
• sci.electronics FAQ: NiCd Batteries do NOT have "memory"
• "Digital Photo Myths Dispelled" by Dave Johnson
• "Dan's Quick Guide to Memory Effect, You Idiots"