Match My Battery

6HR61 vs 9V

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

Verdict
Same size · different voltage
Confidence
100%
Reviewed
2026-08-09
Same size · different voltage

6HR61 and 9V fit the same case but are not electrically interchangeable

6HR61 is rated at 7.2 V and 9V at 9 V. Matching dimensions do not make cells with materially different nominal voltages safe replacements.

Use the exact voltage and battery system specified by the device manufacturer.

Specification6HR619V
Dimensions26.5 × 17.5 × 48.5 mm26.5 × 17.5 × 48.5 mm
Nominal voltage7.2 V9 V
ChemistryNickel-metal hydrideAlkaline manganese dioxide
RechargeableYesNo
Typical useRechargeable household devices, cameras, controllersHousehold electronics, lights, remotes
View 6HR61 profile View 9V profile

Why this verdict

  • The physical envelope matches.
  • Nominal voltage differs: 7.2 V versus 9 V.
  • Chemistry also changes from Nickel-metal hydride to Alkaline manganese dioxide.

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. Duracell — Battery chemistry technical bulletins

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

  3. Energizer — Battery Replacement Guide

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

  4. Duracell — Battery Cross Reference Chart

    Independent manufacturer cross-reference families and corresponding product numbers.