PGSONIC CR2016 3V Lithium Coin Battery (15-Pack), Powerful, Reliable and Leak-Free

Customers find these coin batteries to be of good quality and excellent value, with positive feedback about their functionality, particularly in car key fobs. The batteries provide a perfect fit, and one customer mentions they worked immediately in their key fob. Battery life receives mixed reviews - while some say they last pretty long, others report they only last a single day. Compatibility also gets mixed feedback, with one customer successfully using them in their Scion tC key fob.