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2. I saved my wrists — and my sanity — with this genius electric ...

   www.aol.com/lifestyle/save-wrists-sanity-genius...

   The Kitchen Mama's mission is to make a safe product for all users. Originally designed for a family member that struggled with this task due to arthritis, the automatic can opener was born. Here ...

3. Can opener - Wikipedia

   en.wikipedia.org/wiki/Can_opener

   A fully automatic can opener by Mark Sanders. The first electric can opener was patented in 1931 and modeled after the rotating wheel can opener design. [56] Those openers were produced in the 1930s and advertised as capable of removing lids from more than 20 cans per minute without risk of injury. [57] Nevertheless, they found little success.

4. Charge controller - Wikipedia

   en.wikipedia.org/wiki/Charge_controller

   A charge controller, charge regulator or battery regulator limits the rate at which electric current is added to or drawn from electric batteries to protect against electrical overload, overcharging, and may protect against overvoltage. [1] [2] This prevents conditions that reduce battery performance or lifespan and may pose a safety risk. It ...

5. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   The battery can still be charged while "bucking" an overvoltage, but while "boosting" an undervoltage, the transformer output is too low to charge the batteries. Autotransformers can be engineered to cover a wide range of varying input voltages, but this requires more taps and increases complexity, as well as the expense of the UPS.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Ermal C. Fraze - Wikipedia

   en.wikipedia.org/wiki/Ermal_C._Fraze

   In 1959, while at a picnic with friends and family, Fraze discovered he had left his "church key" can opener at home, forcing him to use a car bumper to open cans of beer. Fraze decided to create an improved beverage opening method that would eliminate the need for a separate device, leading to his creation of the pull-tab opener.