CR2016 coin cells are used extensively in miniature electronics such as calculators or remote controls. These batteries have a long storage life and a wide operating temperature range.
These particular coin cells have a diameter of 20mm and a height of 1.6mm, which can be identified from splitting up the first and last two numbers of the part code. This technique can be applied to any coin cell to give you the dimensions of the cell, which can help you to identify the right battery.
CR2016 coin cells may also be known as the part codes DL2016, E-CR2016, SB-T11, 280-206 or FA, but they are all references to the exact same product.
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