Batteries / LR
LR1
Alkaline zinc / manganese dioxide
Second-source check pending Primary batteryReviewed:
Reference dimensions are not universal manufacturing tolerances. Check the actual cell and holder.
The type status describes documentary checks of core specifications, not every fact or suitability for a device.
Understanding LR1 before replacement
Identify the actual battery
LR1 is a documented Alkaline zinc / manganese dioxide primary cell with a nominal voltage of 1.5 V. Its reference diameter is 12 mm and its reference height is 30.2 mm. These are nominal reference dimensions, not a promise that every manufacturer has identical tolerances.
This dataset describes a non-rechargeable bare cell, without solder tabs or wires. A tabbed or wired assembly requires a separate fit check.
What markings identify this type?
The dataset associates E90, MN9100 with LR1. The manufacturer may use a different label on the package. These references help identify the type; they do not certify the battery for a particular device.
Similar dimensions in this catalogue
No other type with this reference diameter is currently included in the catalogue. This does not prove that other sizes or alternatives do not exist.
What to check before replacing LR1
Read the original device marking, verify nominal voltage and chemistry, compare diameter and height, and check the contacts and load requirements. Same diameter, identical voltage, or a familiar brand prefix alone is not enough to establish interchangeability.
The available data contains no affirmative device-specific fit test for LR1. A missing compatibility relation means “not assessed,” not “compatible.”
How reliable are these specifications?
The principal characteristics are currently supported by one primary source. A full independent second-source comparison is still pending.
Technical specifications
| Designation | LR1 Documented source [Energizer] [Duracell] |
|---|---|
| Chemistry | Alkaline zinc / manganese dioxide Documented source [Energizer] [Duracell] |
| Nominal voltage | 1.5 V Documented source [Energizer] [Duracell] |
| Diameter | 12 mm Documented source [Energizer] |
| Height | 30.2 mm Documented source [Energizer] |
| Rechargeable | No Documented source [Energizer] |
| Terminal form | Bare cell without tabs or leads Documented source [Energizer] |
| Body form | Cylindrical cell Documented source [Energizer] |
Reference dimensions are not universal manufacturing tolerances. Check the actual cell and holder.
Other designations
These codes identify the same type family. Match the load variant, terminals and device requirements separately.
E90Energizer [Energizer]MN9100Duracell [Duracell]
Documented brands
Brand presence comes from product documents or documented code mappings; current availability is not checked.
Product-specific observations
Capacity belongs to an individual product and test regime. It is not a universal value for this battery type.
Energizer E90 / LR1Documented source
Current availability not checked [Energizer]
Documented product; no individual technical observations in this dataset.
Replacement limits
Device compatibility has not been verified. Dimensions alone do not prove that a battery fits or works.
Replacement evidence by category
Other markings of this technical type
E90 · MN9100
These markings resolve to this type in documented sources. The exact variant and device requirements still matter.
Conditional replacement: review requirements
No conditional cross-type relation is recorded.
Known obstacles to direct replacement
No explicit obstacle is recorded here; that is not evidence of compatibility.
Other type pairs without a recorded assessment
This pair has not been assessed. No compatibility conclusion is available.
No automatic replacement recommendation. Device compatibility has not been verified. Dimensions alone do not prove that a battery fits or works.
Documentary limits
LR1: Only one manufacturer or an insufficient independent source supports the cited measurements. Published technical records: Energizer E90 (drawing); Duracell N/LR1 (designation only). Device-level compatibility must be verified separately.
Sources & verification
- Energizer · v024-en-lr1 Documented source
E90 N LR1 manufacturer technical datasheet
Current availability not checked
· Reviewed: - Duracell · v024-dur-lr1 Documented source
N alkaline battery product and N/LR1 declaration
Current availability not checked
· Reviewed: - Duracell · v024-dur-lr1-catalog Documented source
Duracell Technical Library: N / MN9100
Current availability not checked
· Reviewed:
Common questions
What size is LR1?
Ø 12 × 30.2 mm
Can LR1 be recharged?
No. Do not charge primary cells.
Can LR1 replace another battery?
Not on the basis of size or matching names alone. Check the exact device requirements and the directed compatibility notes. This catalogue does not contain a guaranteed device-fit recommendation for LR1.