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Canonical battery record · checked 2 September 2026

AA / LR6 alkaline

AA / LR6 alkaline is the alkaline LR6 size. Rechargeable and lithium products can share the format but have different requirements.

LR6AAE91MN1500
Answer

LR6, AA, E91, MN1500 are the supported exact aliases for one 14.5 × 50.5 mm cylindrical household cell. No other family is treated as an automatic replacement.

Top profile · Ø 14.5 mm
Side profile · 50.5 mm high
Original proportional profiles. Scale is consistent within this diagram; screen size is not a physical ruler.
Format
Cylindrical household cell
Dimensions
14.5 × 50.5 mm
Voltage
1.5 V nominal (alkaline)
Chemistry
Alkaline manganese dioxide / zinc
Drain context
Product- and device-dependent
Rechargeable?
No — primary cell; do not recharge.
Capacity context
No universal family value; chemistry, load, temperature and cut-off alter service.
Confidence
High

Equivalence and confusion matrix

Code or familyClassificationReason
LR6 · AA · E91 · MN1500Exact equivalentThese evidence-backed markings resolve to this one canonical record and share its cited physical and electrical specification.
AAA / LR03 alkalineNot equivalentThe physical envelopes differ (14.5 × 50.5 mm versus 10.5 × 44.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
C / LR14 alkalineNot equivalentThe physical envelopes differ (14.5 × 50.5 mm versus 26.2 × 50 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
9V / 6LR61 alkalineNot equivalentThe physical envelopes differ (14.5 × 50.5 mm versus 26.5 × 48.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
D / LR20 alkalineNot equivalentThe physical envelopes differ (14.5 × 50.5 mm versus 34.2 × 61.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.

Supported application context

  • Household devices specifying this size and chemistry

Application context is limited to the scope stated in Energizer E91 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.

AA/LR6 is 14.5 × 50.5 mm in this alkaline record. AA describes the familiar format, but does not by itself state alkaline chemistry, authorise charging or supply a universal service-life figure.

What the code means

LR6 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: No universal family value; chemistry, load, temperature and cut-off alter service.

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 E91 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, LR6 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.