Energizer button cell 390/389, in blister pack

Reliable and sustainable energy is one of our specialties. For tools and devices that operate with miniature-sized power, choose the special batteries that so many professionals rely on. Energizer® offers a complete range of long-lasting special miniature batteries. Whether for heart rate or glucose monitors, keyless entry systems, electronic keys, or watches, our batteries fit your lifestyle, so you can keep moving forward. Energizer® special batteries provide extreme reliability and performance, are available in various sizes of versatile packs, making them the perfect choice for all your small-sized needs. Plus, with zero added mercury, what more could you ask for your specialized devices? 1.5 V. Blister pack.