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2. Button cell - Wikipedia

   en.wikipedia.org/wiki/Button_cell

   Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.

3. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threa­ded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.

4. Battery nomenclature - Wikipedia

   en.wikipedia.org/wiki/Battery_nomenclature

   Round button batteries also carry two-digit size codes such as R44, see the button battery table for typical dimensions. Other round, flat, and square sizes have been standardized but are used mostly for components of multi-cell batteries. Assorted sizes of button and coin cells, including alkaline and silver oxide chemistries. Four rectangular ...

5. Mercury battery - Wikipedia

   en.wikipedia.org/wiki/Mercury_battery

   Mercury battery "РЦ-53М"(RTs-53M), Russian manufactured in 1989. A mercury battery (also called mercuric oxide battery, mercury cell, button cell, or Ruben-Mallory [1]) is a non-rechargeable electrochemical battery, a primary cell. Mercury batteries use a reaction between mercuric oxide and zinc electrodes in an alkaline electrolyte.

6. The best gifts to buy your grandkids — from babies to big ...

   www.aol.com/lifestyle/the-best-gifts-to-buy-your...

   Tractor and Trailer Battery-Powered Ride-On. $267 at Walmart. 7-in-1 Kids Indoor Swedish Playground . $290 at Walmart. Wisairt Kids Play Ten. $20 at Walmart. Ride on Wiggle Car. $60 at Walmart.

7. This DeWalt brand drill set is nearly half off during Black ...

   www.aol.com/lifestyle/this-dewalt-brand-drill...

   The set comes with a drill, driver, battery charger, carrying case, and two batteries. Get 50% off this bestselling drill set from Dewalt during Black Friday. The set comes with a drill, driver ...