The Panasonic CR1025 is a compact lithium manganese dioxide coin cell battery designed to provide reliable power for small electronic devices. With a voltage of 3 V and a capacity of 30 mAh, this button cell ensures steady performance in low-drain applications where space is limited. Measuring just 10 mm in diameter and 2.5 mm in height, its slim profile allows it to fit into tiny compartments like those found in car key fobs, calculators, or digital watches. To ensure safety in the home, this single battery comes in child-resistant packaging and is manufactured without mercury.