Keep your Firefly flashing with a pack of 10 replacement LR1130 (AG10/389A) alkaline button cell batteries. The Firefly bicycle light is one of our perennial favorite bike accessories, but their sheer popularity means that they have a habit of going through batteries the more you use them. You can try to find the correct size button cells in the common 2-pack at your local drug store (and pay the much higher mark-up), or you can just order them from us at a much nicer price.

The LR1130 button cell was once a ubiquitous size for powering wristwatches, calculators, analog film cameras, and other personal devices that required a very small amount of current over a long time period. With the decline in popularity of single-use electronics, these button cell batteries are no longer as common as before.

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