Batteries / SR
4SR44
Silver oxide / zinc
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 4SR44 before replacement
Documented battery characteristics
4SR44: Silver oxide / zinc, 6.2 V, Ø 13 × 25.1 mm. These are reference battery dimensions, not a verified device fit. Cell and battery pack shapes, contact layout and charging requirements can differ.
This is a primary battery; never attempt to recharge it.
Manufacturer markings in the dataset
4SR44P, V28PX
What to check before replacing 4SR44
No device-specific fit or safe replacement is confirmed.
Technical specifications
| Designation | 4SR44 Cross-checked using documents from two independent publishers [Panasonic] [VARTA] |
|---|---|
| Chemistry | Silver oxide / zinc Documented source [Panasonic] |
| Nominal voltage | 6.2 V Cross-checked using documents from two independent publishers [Panasonic] [VARTA] |
| Height | 25.1 mm Documented source [Panasonic] |
| Rechargeable | No Documented source [Panasonic] |
| Terminal form | Battery without external leads Documented source [Panasonic] |
| Body form | Cylindrical cell Documented source [Panasonic] |
| Diameter | 13 mm Documented source [Panasonic] |
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.
4SR44PPanasonic [Panasonic]V28PXVARTA [VARTA]
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 4SR44PDocumented source
Current availability not checked [Panasonic]
Documented product; no individual technical observations in this dataset.
VARTA V28PXDocumented source
Current availability not checked [VARTA]
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
4SR44P · V28PX
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
4SR44: Published dimensions differ by manufacturer or reference method; tolerances and fit have not been established. Published technical records: Panasonic 25.1 mm; VARTA 25.2 mm; 4LR44 / 544 / PX28 (NOT validated aliases). Device-level compatibility must be verified separately.
Sources & verification
- Panasonic · v026-pan-4sr44 Documented source
4SR44P silver-oxide photo battery official specifications
Current availability not checked
· Reviewed: - VARTA · v026-varta-4sr44 Documented source
V28PX / 4SR44 silver cylindrical official specifications
Current availability not checked
· Reviewed:
Common questions
What size is 4SR44?
Ø 13 × 25.1 mm
Can 4SR44 be recharged?
No. Do not charge primary cells.
Can 4SR44 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 4SR44.