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The 12V Battery Hack that Saves You $40

By Addy Dugdale on August 20, 2007 at 8:50 PM


Did you know what is inside some batteries? About $40-worth of savings, it seems. Cut open an A23 battery (cost: 94¢) and you’ll find eight 1.5-volt button batteries, each of whose RRP is around $4.99. [KipKay via Spluch]

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