Sometimes you come across something so simple and yet so brilliant that you simultaneously know you need to buy it immediately, but you kick yourself for not thinking of it yourself first. Such is the case with the Tethercell AA Smart Battery Adapter, which lets you remotely control any AA battery powered device with your iPhone or iPad.

Here are some key details from the Amazon product page:

  • Turn AA-battery powered devices on and off remotely
  • Works with Apple iOS devices beyond iPhone 4 and iPad 2.
  • One Tethercell needed per AA-battery powered device
  • Set device schedule, timers, and power setting
  • Be alerted when batteries are running low

In a nutshell, this product works by cutting the power flowing from a battery to the device it’s installed in. It does this on command, either manually from the accompanying iPhone app or on a timer. How smart is that?

Last but not least, we’ve got a special promo code that will save you $5 on this nifty gadget from now through midnight PST on December 5.

Tethercell AA Smart Battery Adapter (2 pack), $24.99 with promo code X96GWYWN (expires 12/5)

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