Sunny days…and dead batteries

Sunny days…and dead batteries

Getting some bikes ready to go and they are ready, but their computers are not. How many different size batteries can there be:

  • LR44. Button battery for an old Cat Eye. They aren't expensive. Amazon has a pack of 10 for $2.43
  • CR1620. This is *not* a CR2016. A cr2032 and a CR2016 are 20mm in diameter and the 2016 is half the thickness. A CR1620 is smaller 16mm diameter. Rakuten has 50 for $5.50!. But I don't need so many and 25 for $5. Also so cheap at $4 for 5-pack at Amazon.
  • CR123. Just went through an entire 12-pack filling smoke alarms!. $13 at Amazon.
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