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The Energizer ECR1620 is a lithium coin cell battery engineered for the precision demands of modern optics, electronics, and tactical gear. Whether you're powering a reflex sight, range finder, laser, or other compact electronic device in the field, this reliable power source keeps your equipment running when it matters most. Lithium chemistry delivers consistent voltage output and exceptional shelf life—critical when you're counting on your gear in remote hunting country or at the range.

Coin cell batteries like the ECR1620 are the standard choice for illuminated reticles, battery check systems, and wireless accessories used by hunters, shooters, and outdoor enthusiasts. This format fits the compact battery compartments found in quality optics and outdoor electronics, making it an essential spare to keep in your range bag, truck, or pack.

Stock a few of these in your gear rotation. Field conditions are unpredictable, and dead batteries have no place in a hunting or shooting setup. The ECR1620's lithium chemistry resists the performance drop that alkaline batteries suffer in cold weather, giving you dependable operation from opening day through late season.

Specifications

Frequently Asked Questions

What devices use the ECR1620 battery?

The ECR1620 is a standard lithium coin cell used in illuminated scopes, reflex sights, laser devices, range finders, and various outdoor electronics. Check your device's manual to confirm compatibility before purchase.

How long does an ECR1620 battery last?

Lithium coin cells are known for excellent shelf life and sustained voltage output. Actual runtime depends on the specific device and how heavily it's used. We recommend keeping spares on hand for critical gear.

Why lithium instead of alkaline?

Lithium coin cells maintain consistent voltage across their lifespan and perform reliably in cold weather—both important for outdoor and field use where alkaline batteries may fail unpredictably.