4SR44 battery
What replaces a 4SR44
544, PX28, PX28S, S1325, V34PX, EPX28
6.2 V silver oxide, 13 × 25.2 mm (diameter × height)
The 4SR44 is a single-use 6.2 V silver oxide cylindrical. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.
Specification
- IEC designation
- 4SR44
- Nominal voltage
- 6.2 V
- Chemistry
- Silver oxide
- Size
- 13 × 25.2 mm (diameter × height)
- Typical capacity
- 170 mAh
- Rechargeable
- No — never charge it
Codes that mean the same battery
| Code | Fits? |
|---|---|
| 544 | Yes — same cell |
| PX28 | Yes — same cell |
| PX28S | Yes — same cell |
| S1325 | Yes — same cell |
| V34PX | Yes — same cell |
| EPX28 | Yes — same cell |
| 4G13 | Yes — same cell |
| SR44 x4 | Yes — same cell |
Codes that look close but are not
| Code | Why it is not a substitute |
|---|---|
| 4LR44 / A544 | The alkaline version in the same can, at 6.0 V with a sloping discharge. Where a camera meter was calibrated for silver oxide the alkaline shifts exposure as it ages; where a bark collar just needs 6 V, either is fine. |
| 2CR1/3N / PX28L | The lithium version, 6.0 V and flat, with a decade of shelf life. Usually the best choice, but it is a different chemistry from what an old meter was set up against. |
The 4SR44 is a primary cell and must never be put in a charger. Charging a sealed primary battery builds gas pressure inside a can with no vent designed for it, which is how they rupture or catch fire. Rechargeable look-alikes exist for several sizes and carry different codes — check the code, not the shape.
Where it turns up
- Pentax LX, Minolta XD and Canon film camera meters
- Precision instruments needing a stable 6 V
- Medical devices
- Some laboratory equipment
Four SR44 silver oxide cells stacked in one can, which is why it is 6.2 V rather than 6.0 — 1.55 V per cell, not 1.5.
Common questions
- What is equivalent to a 4SR44?
- 544, PX28, PX28S, S1325, V34PX, EPX28, 4G13, SR44 x4 — all the same 6.2 V cell under different manufacturer codes.
- Can I use a 4LR44 / A544 instead of a 4SR44?
- The alkaline version in the same can, at 6.0 V with a sloping discharge. Where a camera meter was calibrated for silver oxide the alkaline shifts exposure as it ages; where a bark collar just needs 6 V, either is fine.
- Is the 4SR44 rechargeable?
- No. It is a primary cell — charging one risks rupture or fire. Rechargeable look-alikes exist in the same size under different codes.
Related pages
- LR6 battery 1.5 V alkaline
- LR03 battery 1.5 V alkaline
- ICR18650 battery 3.6 V lithium-ion (rechargeable)
- LR20 battery 1.5 V alkaline
- HR6 battery 1.2 V nickel-metal hydride
- LR14 battery 1.5 V alkaline
- CR17345 battery 3 V lithium (primary)
- HR03 battery 1.2 V nickel-metal hydride
- 8LR932 battery 12 V alkaline
- FR6 battery 1.5 V lithium (primary)
- INR21700 battery 3.6 V lithium-ion (rechargeable)
- 4LR44 battery 6 V alkaline
Sources
- Typical range compiled from manufacturer specifications — At One Place