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Feb
6
2010
For all their variety, batteries can ultimately be classified into two types: non-rechargeable and rechargeable, also called primary and secondary, respectively.
Feb
2
2010
Batteries are a necessity; no portable device can work without batteries.
Feb
1
2010
Each of us in our own way can help the environment and prevent our planet from becoming polluted just by changing the way we carry out everyday routines and habits.
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