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Panasonic 2B/3605/70 CR2016L Lithium Coin Batteries — main product image
Panasonic 2B/3605/70 CR2016L Lithium Coin Batteries
Panasonic 2B/3605/70 CR2016L Lithium Coin Batteries
Panasonic 2B/3605/70 CR2016L Lithium Coin Batteries
Panasonic

Panasonic 2B/3605/70 CR2016L Lithium Coin Batteries

★★★★★4.6 (975 reviews)

Panasonic's CR2016 lithium chemistry holds a stable 3V output and a 10-year shelf life for the small devices that fail at the worst possible moment.

$6.16*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Panasonic CR2016L is a standard lithium coin cell that powers devices that rarely get attention until they stop working — key fobs, watch movements, motherboard CMOS clocks, compact medical devices, and small remotes. At 3V nominal with a flat discharge curve, lithium chemistry delivers the stable voltage these devices require from first use through most of their operational life, unlike alkaline alternatives whose voltage sags as discharge progresses. The 20mm diameter and 1.6mm profile are standard CR2016 dimensions, fitting any device specifying this cell without modification or adapter.

Brand choice matters with coin cells in two specific ways: shelf life and consistency. Panasonic rates these at approximately 10 years of shelf life under standard storage — a meaningful advantage for keeping spare cells on hand for infrequently replaced devices. Lithium construction also maintains performance across temperature extremes, staying reliable in car key fobs exposed to summer dashboard heat and winter cold where alkaline cells can become unreliable. Proper disposal is the real-world ownership note: lithium coin cells require battery-recycling drop-off and represent a safety hazard if ingested — keep packaging sealed and stored out of reach of children until ready to install.

Specifications

Model
CR2016L
Chemistry
Lithium
Voltage
3V nominal
Dimensions
20mm diameter x 1.6mm height
Approximate Shelf Life
~10 years
Brand
Panasonic

Pros & Cons

👍 Pros

  • Panasonic's lithium chemistry maintains a stable 3V output throughout most of the discharge curve — voltage doesn't sag the way alkaline button cells do, which matters for devices with low-voltage cutoff protection.
  • Lithium construction keeps these batteries functional from approximately -30°C to 60°C — reliable in outdoor key fobs and car-mount devices that cycle through temperature extremes.
  • A 10-year shelf life makes bulk purchasing practical for infrequently replaced devices like smoke detector backup cells and CMOS clocks without worrying about stored batteries expiring before use.
  • Panasonic's manufacturing consistency means CR2016L cells from the same production batch have matched capacity — relevant for medical devices and precision electronics with tight power tolerances.
  • CR2016 is a globally standardized size, making these direct replacements in virtually any device specifying the format without cross-referencing regional or brand-specific part numbers.

👎 Cons

  • The CR2016 is specifically 1.6mm thin — if a device actually requires a CR2025 or CR2032, the thinner cell makes poor contact and cannot substitute despite the same nominal voltage.
  • Coin cell batteries are a known small-parts ingestion hazard — packaging and storage of CR2016 cells requires active precautions in households with young children or pets.
  • Lithium coin cells are not rechargeable — depleted cells require battery-recycling drop-off for proper disposal rather than household trash.
  • At approximately 75–90mAh capacity, the CR2016 is exhausted quickly in devices designed for larger coin cells — verify the device's actual specification before ordering this thinner format.
  • Individual installation date tracking is impractical across many devices, meaning most users only discover a CR2016 is at end-of-life when the device stops working entirely.

Frequently Asked Questions

The CR2016 is a standard coin cell used in watches, key fobs, small remotes, calculators, medical devices, and motherboard CMOS clocks. Panasonic's CR2016L meets the standard 20mm diameter x 1.6mm height dimension and fits any device specifying CR2016.
Runtime depends on device current draw. In low-drain devices like watches or CMOS backup clocks, a CR2016 typically lasts 1–5 years. In key fobs drawing current on each button press, expect 1–3 years under normal use.
Panasonic lithium coin batteries maintain approximately 90% of their charge after 10 years of storage under recommended conditions — room temperature, away from moisture and heat.
No. The CR2016 is 1.6mm thick. The CR2025 is 2.5mm and the CR2032 is 3.2mm. Installing a thicker cell in a CR2016 slot can damage the battery compartment or prevent proper contact closure — they are not interchangeable despite sharing the same 3V nominal voltage.
The listing does not specify a fixed quantity — verify the pack count at the point of purchase, as Panasonic CR2016 batteries are sold in single, 2-pack, and multi-pack configurations under this model number.

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