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Coin Ell Case Spacer Spring
Sep 12, 2018

Coin cells derive their names from their shape and size – thinner variants are called coin cells because they resemble coins, while thicker ones are called button cells because, you guessed it – they look like buttons. Their size ranges from 5 to 25 millimeters in diameter and 1 to 6 millimeters in height, and they’re single cell, usually primary cell batteries, which means they are single-use and disposable. Secondary cell batteries are rechargeable, though seldom seen when it comes to coin/button cells. Most commonly, secondary button and coin cells are used in computers and handheld gaming devices to store data when the device is powered off.

Coin cell case is divided into four parts: positive case, negative case,spacer and spring.

coin cell case.jpg


Assembly and crimping of coin cell

Collect the necessary components ready: micropipette with fresh pipet tip, electrolyte bottle opened (be careful!), CR2032 anode half, CR2032 cathode half, 2 separators, 2 spacers, spring, freshly cut Li anode, and your cathode. Take the anode side of the CR2032 coin cell case (the smaller one) and pile up the battery components into it as follows:

1.Put one spacer on the coin cell case bottom.

2.Press gently the Li anode into the coin cell case with the aid of plastic tweezers.

3.Put two separators onto the lithium.

4.Moist the separators with 50 ml of electrolyte solution with micropipette.

5.Put your cathode on top of the separator sheet.

6.Put one spacer onto the cathode and a spring on that.

7.Put the CR2032 cathode half on top of all to finalize the battery construction.

8.Transfer the cell to the crimper cathode side down which means that you need to turn the cell while transferring. Use plastic tweezers to avoid short-circuiting of your cell.

9.Turn on the crimper.

10.Press the cell by switching position to “Drop”. The crimper will stop automatically and it will indicate it by blinking the red light.

11.Switch to “Rising” and then Stop when it has elevated sufficiently to remove the cell.

12.Turn off the crimper and remove your coin cell with plastic tweezers.

13.Take a look on your cell that it is undamaged and otherwise ok.

14.You can now take your cell out from the glove box for testing.


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