CR 2032
These ’coin’ type batteries which are found in cycle computers, watches, some bike lights and a host of small consumer goods from cameras to children’s toys, are marked not just by their diminutive size but by their longevity. They seem to last for ever! Known as Lithium batteries the ones we most commonly see are described as using;
‘metallic lithium as anode and manganese dioxide as cathode with a salt of lithium dissolved in an organic solvent’.
OK? Well for the non technical of us this just means that they have different a chemical makeup from the usual alkaline batteries (Duracells and Energizers etc) that we’ve been using for years, and are more expensive – but then that is the price of progress. There are, of course, lots of other types of small battery – 12 different sizes from 4.8 millimetres to 24.5 – but the CR2032 is the most common in cycling computers and small bike lights. Check out the Micro Lights on Pedal-Pedal for examples of CR2032 useage.
