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Household

9V Battery Dimensions, Size & Codes

This rectangular 9V battery measures 26.5 × 17.5 × 48.5 mm. Codes 6LR61, PP3, MN1604 and 1604A resolve to the same alkaline profile.

Technical content reviewed 2026-09-08

6LR61PP3MN16041604A
Nominal voltage
9 V
Dimensions
26.5 × 17.5 × 48.5 mm
Chemistry
Alkaline manganese dioxide

9V specifications

Canonical code9V
Formrectangular
RechargeableNo
Drain markingNot specified

Typical applications

  • Household electronics
  • lights
  • remotes
  • portable devices

Replacement decision

Resolve the original marking to this profile, then confirm nominal voltage, chemistry, dimensions, polarity and any drain or terminal suffix. Capacity alone does not establish interchangeability.

Exact equivalents and aliases

The catalog 9V profile is a 9 V alkaline rectangular battery. The printed 6LR61, PP3, MN1604 and 1604A markings resolve to that same profile; 6HR61 has the same listed envelope but is a 7.2 V NiMH rechargeable profile.

6LR61, PP3, MN1604 and 1604A are reviewed aliases of the canonical 9V profile. They are different markings for the same catalog row, not four extra battery sizes.

MarkingCatalog profileVoltageChemistryDimensionsDecision
9V / 6LR61 / PP3 / MN1604 / 1604A9V · Alkaline9 VAlkaline manganese dioxide26.5 × 17.5 × 48.5 mmExact alias / canonical profile
Resolves to 9V; verify polarity and the device marking.
  • Canonical code and reviewed aliases resolve to one profile.
6HR616HR61 · NiMH7.2 VNickel-metal hydride26.5 × 17.5 × 48.5 mmSame size · different voltage
Use the exact voltage and battery system specified by the device manufacturer.
  • The physical envelope matches.
  • Nominal voltage differs: 9 V versus 7.2 V.
  • Chemistry also changes from Alkaline manganese dioxide to Nickel-metal hydride.

Conditional substitutes

6HR61 is a conditional comparison only. It shares the listed rectangular dimensions, but its rechargeable NiMH chemistry and 7.2 V nominal voltage are different from the 9 V alkaline profile. Use it only when the device explicitly supports that battery system.

Physical fit is not electrical compatibility

A rectangular case can fit the compartment while the voltage and charging requirements remain wrong. Check the snap-terminal arrangement and the device manual before installing any battery that is not an exact alias.

How to verify before replacing 9V

  1. Read the full marking, including 6LR61, PP3, MN1604 or 1604A.
  2. Confirm the device calls for a 9 V primary battery, not a rechargeable pack.
  3. Match the listed dimensions and terminal arrangement; physical entry alone is not an electrical approval.

Continue with: Compare the household AAA profile Read about rechargeable lookalikes Measure the battery envelope

Same-size batteries to review carefully

These profiles share the nominal physical envelope. They are not automatically equivalent.

6HR61 NiMH 7.2 V 26.5 × 17.5 × 48.5 mm

Reviewed comparisons

9V vs 6HR61Same size · different voltage

Technical sources

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

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

  2. Energizer — Battery Replacement Guide

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

  3. Duracell — Battery Cross Reference Chart

    Independent manufacturer cross-reference families and corresponding product numbers.

  4. Duracell — Battery chemistry technical bulletins

    Alkaline, lithium-manganese-dioxide, zinc-air and silver-oxide chemistry behavior.