Match My Battery

CR1616 vs CR1620: 1.6 vs 2.0 mm Height

A reviewed side-by-side decision based on form, fit, electrical specification and application limits.

Verdict
Same diameter · different height
Confidence
98%
Reviewed
2026-10-04
Same diameter · different height

CR1616 and CR1620 are different thicknesses

Both cells are about 16 mm in diameter, but their heights are 1.6 mm and 2 mm.

Use the specified height; do not rely on contact spring travel.

SpecificationCR1616CR1620
Dimensions16 × 1.6 mm16 × 2 mm
Nominal voltage3 V3 V
ChemistryLithium manganese dioxideLithium manganese dioxide
RechargeableNoNo
Typical useWatches, remotes, sensorsWatches, remotes, sensors
View CR1616 profile View CR1620 profile

About Confidence: this is a fixed score attached to a comparison rule in the catalog. It is not a probability of working, a measured success rate, or device approval. Read the verdict and its reasons; a high score can accompany a non-equivalence verdict.

See the height difference

CR1616 and CR1620 nominal side views CR1616: 16 mm diameter, 1.6 mm height. CR1620: 16 mm diameter, 2 mm height. CR1620 is 0.4 mm taller. Both side views use the same scale on both axes; this is not a life-size drawing. CR1616 Height 1.6 mm Diameter 16 mmCR1620 Height 2 mm Diameter 16 mm

CR1620 is 0.4 mm taller. Nominal schematic from catalog dimensions, drawn to one scale on both axes. Not life-size; terminal details are omitted.

The manufacturer’s tolerances, terminal design and holder requirements take precedence. This diagram does not establish interchangeability.

Dimension references: Energizer CR1616 · Energizer CR1620

Why this verdict

  • Diameter matches.
  • Height and capacity envelope differ.

What to verify in the device

Check the original compartment label, the current manual, polarity, terminal style and whether the device explicitly permits a chemistry or rechargeable alternative.

Sources for these profiles

  1. International Electrotechnical Commission — IEC 60086-1:2026 — Primary batteries, general requirements

    Primary-battery nomenclature, form, fit, function, terminal and electrochemical-system framework.

  2. International Electrotechnical Commission — IEC 60086-2-2:2026 — Physical and electrical specifications of lithium batteries

    Standardized primary-lithium dimensions and electrical specification context.

  3. Energizer — Lithium Coin Handbook and Application Manual

    Lithium/manganese-dioxide coin chemistry, voltage, capacity, drain and application behavior.

  4. Energizer — Battery Replacement Guide

    Cross-reference codes and manufacturer guidance to replace the same size and type together.