Them: "Any lithium batteries, blah blah blah?"

Me: "Nope."

Never had an issue with that strategy.

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Benjamin Deal - Professional - Instagram - TriRig - Lodi Cyclery
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“Loose” means a battery that isn’t part of some product. Think spare batteries or USB power packs.

The Di2 is part of the bike and the pm battery is part of the bike as well. No issues.

If you have spare batteries (ex. extra 2032s for your hrm or pm) in theory you should put them in your carry on. In practice no one does.

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ECMGN Therapy Silicon Valley:
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I usually pop the coin cell battery out of a power meter just so it's not constantly waking up from vibrations while in transport. No other battery-related issues traveling by air, personally.

Just FYI, CO2 cartridges not allowed, if you happen to be packing your flat kit, etc.

I'm sure you'll be fine with Di2 battery connected to the frame in some way, or any coin cell at all.

Their real concern is fire risk from things like large quadrotor drone batteries or laptop batteries.

Understood; thanks all

Fortunately I don't use CO2 cartridges. Just a Lezyne pump to get tires back to pressure.