6-Pack ER14250 3.6V Lithium Battery 1200mAh, Non-Rechargeable | ER 14250 1/2AA LS14250 Li-SOCL Batteries Compatible with Movement Monitor, Dog Collar, Meter Reader

2. Wide Application -- Designed for wireless alarms, security devices, dog collar, memory back-up, real-time clocks, electronic toll collection, electric energy meters, water meters, gas meters, calorie meters and more. Ideal for low power consumption devices. 3. Reliable Performance -- Under 1% self-discharge rate per year at room temperature. Functions dependably across temperatures from -55 to +85 (-67 to 185). 4. Note -- Lithium thionyl chloride batteries exhibit a passivation characteristic. Therefore, we strongly advise using the battery within roughly 2-3 months, depending on storage conditions, for optimal performance. We recommend purchasing as many as you need. 5. Quality Assurance -- Thoroughly tested for reliable performance