Are you trying to buy from Adafruit, or somewhere else? And you're trying to buy the Puck?
Maybe they're being overly careful about it - generally because it's such a small battery, isn't li-ion, and is installed in the device, in protective packaging most shippers are totally fine with it. If you order from shop.espruino.com I ship out from the UK and I'm pretty sure that all goes through USPS without issue.
Having said all that, I don't supply batteries with the Pixl - because it's not shipped in a box and isn't encased it's much less obvious whether postal services will take it.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Are you trying to buy from Adafruit, or somewhere else? And you're trying to buy the Puck?
Maybe they're being overly careful about it - generally because it's such a small battery, isn't li-ion, and is installed in the device, in protective packaging most shippers are totally fine with it. If you order from shop.espruino.com I ship out from the UK and I'm pretty sure that all goes through USPS without issue.
Having said all that, I don't supply batteries with the Pixl - because it's not shipped in a box and isn't encased it's much less obvious whether postal services will take it.