PGSONIC CR2450 Batteries, 3 Volt Lithium Coin Battery 10 Count, High Capacity and Leak-Free Performance

Customers find these batteries reliable, particularly noting they work perfectly in car key fobs, and appreciate their convenience, with one mentioning they're ideal for fairy string lights. They fit well in various devices, including thermometers and sensors. The battery life and ease of use receive mixed feedback - while some say they last longer than most and are easy to install, others report they don't last as long and find them difficult to open.