POWEROWL CR2 3V Lithium Battery, 6 Pack High Capacity CR15h270 CR 2 C2 3 Volt Batteries Cell, Long Lasting Power

Customers find these batteries to be of good quality, working well with door alarms and offering excellent value for money. They fit perfectly in various devices, and customers appreciate their power, with one mentioning they're ideal for smoke alarms. The battery life receives mixed feedback - while some say they last longer than usual, others report them being half-dead upon installation.