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Building a "Baghdad Battery"
USB Li-ion battery charger
Old SLA Battery Recovery
How to Age Paper
The Oakland Toy Lab
How To Make A Battery Tester
Mysterious illusion toy.
Kalasam a great protector and redevelopment source
How Do Batteries Work? (+DIY Homemade Battery)
Film Canister Battery
Cats Science Club
Posted:Feb 10, 2010
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