Batteries / BR
BR1220
Lithium / polycarbon monofluoride
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 BR1220 before replacement
Identify the actual battery
BR1220 is a documented Lithium / polycarbon monofluoride primary cell with a nominal voltage of 3 V. Its reference diameter is 12.5 mm and its reference height is 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?
No other designation has yet been independently recorded for BR1220. Do not assume that a similar-looking code is equivalent.
Similar dimensions in this catalogue
The following types share the same reference diameter as BR1220. Their height, chemistry or voltage may differ. They are comparisons, not approved substitutes:
What to check before replacing BR1220
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 BR1220. 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 | BR1220 Documented source [Panasonic Energy] |
|---|---|
| Chemistry | Lithium / polycarbon monofluoride Documented source [Panasonic Energy] |
| Nominal voltage | 3 V (Nominal) Documented source [Panasonic Energy] |
| Diameter | 12.5 mm Documented source [Panasonic Energy] |
| Height | 2 mm Documented source [Panasonic Energy] |
| Rechargeable | No Documented source [Panasonic Energy] |
| Terminal form | Bare cell without tabs or leads Documented source [Panasonic Energy] |
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.
No additional documented designation.
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.
Panasonic Energy BR1220Documented source
Current availability not checked [Panasonic Energy]
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
No additional documented designation.
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
BR1220: Only one manufacturer or an insufficient independent source supports the cited measurements. Published technical records: Panasonic BR1220. Device-level compatibility must be verified separately.
Sources & verification
- Panasonic Energy · v020-panasonic-br1220 Documented source
Panasonic BR1220 manufacturer product page
Current availability not checked
· Reviewed:
Common questions
What size is BR1220?
Ø 12.5 × 2 mm
Can BR1220 be recharged?
No. Do not charge primary cells.
Can BR1220 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 BR1220.
How does BR1220 differ from CR1220?
BR1220 and CR1220 have reference heights of 2 mm and 2 mm respectively, and nominal voltages of 3 V and 3 V. Their chemical systems are Lithium / polycarbon monofluoride and Lithium / manganese dioxide. These comparisons do not establish a permitted replacement.
Open technical comparison: CR1220
This is a technical comparison, not an equivalence or fit certificate.