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Canonical battery record · checked 2 September 2026

9V / 6LR61 alkaline

The 9 V alkaline family is rectangular, with snap terminals; chemistry-specific device guidance still controls.

9V6LR61522MN1604
Answer

9V, 6LR61, 522, MN1604 are the supported exact aliases for one 26.5 × 48.5 mm rectangular household battery. No other family is treated as an automatic replacement.

Top profile · Ø 26.5 mm
Side profile · 48.5 mm high
Original proportional profiles. Scale is consistent within this diagram; screen size is not a physical ruler.
Format
Rectangular household battery
Dimensions
26.5 × 48.5 mm
Voltage
9 V nominal
Chemistry
Alkaline manganese dioxide / zinc
Drain context
Product- and device-dependent
Rechargeable?
No — primary cell; do not recharge.
Capacity context
Load- and cut-off-dependent; use a current datasheet.
Confidence
High

Equivalence and confusion matrix

Code or familyClassificationReason
9V · 6LR61 · 522 · MN1604Exact equivalentThese evidence-backed markings resolve to this one canonical record and share its cited physical and electrical specification.
C / LR14 alkalineNot equivalentThe physical envelopes differ (26.5 × 48.5 mm versus 26.2 × 50 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
AA / LR6 alkalineNot equivalentThe physical envelopes differ (26.5 × 48.5 mm versus 14.5 × 50.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
AAA / LR03 alkalineNot equivalentThe physical envelopes differ (26.5 × 48.5 mm versus 10.5 × 44.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
D / LR20 alkalineNot equivalentThe physical envelopes differ (26.5 × 48.5 mm versus 34.2 × 61.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.

Supported application context

  • Smoke alarms and devices specifying 9 V alkaline

Application context is limited to the scope stated in Energizer 522 Product Datasheet; it is not a device compatibility claim.

This record describes the alkaline version of the physical format. Rechargeable and lithium products may share a familiar size while using different voltage and charging requirements.

The 9 V/6LR61 family is rectangular with snap terminals, unlike the cylindrical LR03, LR6, LR14 and LR20 records. The displayed dimensions describe an envelope rather than a round-cell diameter.

What the code means

9V is the IEC-style alkaline identity for this household format; familiar consumer and manufacturer codes are retained as aliases.

Discharge and drain behaviour

Service life is device-, load-, temperature- and cut-off-dependent. A rechargeable or lithium product sharing the physical format is not the same electrical family.

Capacity context: Load- and cut-off-dependent; use a current datasheet.

Substitution guidance

Use the exact size and chemistry required by the device. Rechargeable NiMH and primary lithium products can share the familiar format while differing in nominal voltage and charging rules.

Fact-level evidence

Energizer 522 Product Datasheet

Published by Energizer; page 1, specifications and industry-standard dimensions drawing. Checked 2 September 2026. Independently presented facts only; publisher wording, layout and diagrams are not reproduced.

Corroborated against Energizer Battery Cross Reference Guide; page 3, 9V row in the household-size table.

Open primary source Open corroborating source
Not a device-fit guarantee.

Confirm the exact code, chemistry and drain requirement with the device maker. Keep button and coin cells away from children and never recharge this primary cell.