Tenergy CR1632 3V Lithium Button Cell, for Watches, Key Fobs, Calculators, Medical Devices, and More, 20 Count (Pack of 4)

Customers find these batteries offer good value for money and work well in various devices, including key fobs and door notification systems, with one customer noting they perform as well as higher-priced lithium batteries. They fit perfectly and are suitable for specific needs, with one customer mentioning they're ideal for trailer tire pressure monitoring systems. The battery life receives mixed feedback, with some customers reporting they hold a good charge while others say they die quickly.