The 12V Battery Hack that Saves You $40

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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]

DISCUSSION

Time was when there was nothing but black crap inside batteries. Next thing you know frogs will be made out of something other than frog goo.