Hands up who hates buying batteries. (I had both hands up in the air by the way, briefly, but had to put them down to continue writing this article.) Anyway, batteries are the bane of my life. It seems almost every toy we have for our children or gadget for ourselves require batteries. And they need them in all shapes and sizes. The worst offenders are those button-cell batteries. Small and costly...until I saw the coolest video. (See also: 5 Quick Remote Control Hacks to Save You Time and Money)

Kipkay over at Metacafe has done it again, with a life hack and battery hack that will save you roughly $40 on those 1.5V button cell batteries. All you need is a 2-pack of 12V A23 batteries, which retail at less than $2 a pack. I found my set on Amazon for $1.66.

$40 From a 12V Battery

How To Hack A 12 Volt Battery

As the video shows, you simply split them open to reveal EIGHT 1.5V button-cell batteries, each one worth around $5. And as these 12V batteries come in pairs that gives you a grand total of 16 new batteries worth around $80. Not bad for an initial investment of $1.66. Kipkay also goes on to split a 9V battery for use in a battery emergency. You could say these hacks are literally "power to the people." (Sorry, couldn't resist).

9V Emergency Battery Hack

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