Joined: Jun 2009
Posts: 2,242
Likes: 1,659
From: PacNW
Bikes: Dinucci Allez 2.0, Richard Sachs, Alex Singer, Serotta, Masi GC, Raleigh Pro Mk.1, Hetchins, etc
I would not worry about this. I would just leave the batteries in the bike.
The concerns about battery fires mostly apply to low end bikes with a minimal battery management system, and / or crappy chargers.
if you're worried about a battery fire in the car golly you sure would not want to have that battery between your legs while riding !
but you do you
/markp