PR44 vs LR44
Same 11.6 × 5.4 mm outline. Size 675 is zinc-air (blue tab) for hearing aids; LR44 is alkaline for toys and gadgets. Chemistry — not size — decides compatibility.
Last verified Aug 25, 2026
Never interchangeable by chemistry — buy the type your device specifies.
A LR44 vs PR44 swap fails on voltage, chemistry, capacity. If the door only closes when you force it, or the device works only while you press the cover, you have the wrong cell — not a weak spring you should ignore.
Do not put alkaline LR44/AG13 into hearing aids that require zinc-air 675. Follow the audiologist or device manual.
They share 11.6 mm diameter, which is why PR44 vs LR44 looks interchangeable on a store shelf. Highlighted rows are the ones that change the purchase: voltage, chemistry, capacity.
Read physical fit before capacity. Extra milliamp-hours only help when the holder is built for that cell. A “better” spec in the wrong tray is a mechanical or voltage mismatch, not an upgrade.
| Spec | PR44 | LR44 |
|---|---|---|
| Chemistry | ZincAir | Alkaline |
| Nominal voltage | 1.4 V | 1.5 V |
| Diameter | 11.6 mm | 11.6 mm |
| Thickness | 5.4 mm | 5.4 mm |
| Outline | 11.6 × 5.4 mm | 11.6 × 5.4 mm |
| Typical capacity | 600–650 mAh | 110–130 mAh |
| Typical weight | 1.8 g | — |
| Unused shelf life | ~3 years | ~3 years |
| Category | zinc-air | alkaline-button |
| Common aliases | 675A, PR44, BLUE675, DA675 | AG13, A76, LR1154, 76A |
If you searched LR44 vs PR44, you are on the same comparison with the names reversed. The difference between PR44 and LR44 batteries is not the word “vs” — it is the specs that do not match after you ignore the similar photos.
Nominal voltage is not a rounding error here. PR44 is 1.4 V; LR44 is 1.5 V. The lower-voltage cell will starve a circuit designed for the higher one. The higher-voltage cell can stress or destroy a gadget that expected the lower rail.
Even when the cans look related, PR44 (ZincAir) and LR44 (Alkaline) are different product classes. Capacity, voltage sag, temperature range, and whether the cell can be charged all follow chemistry — not the photo on the listing.
Typical PR44 capacity is 600–650 mAh. LR44 is 110–130 mAh. Runtime only follows that gap inside the correct holder. Extra capacity in the wrong tray does not last longer — it often does not run at all.
Identical outline; zinc-air vs alkaline
675 activates when the tab is removed and needs air
LR44 is a sealed alkaline primary
Using the wrong type can damage hearing aids or waste money on toys
Coin and button codes are rulers, not brand slogans. The letters mark chemistry class. The digits encode size. PR44 measures 11.6 × 5.4 mm; LR44 measures 11.6 × 5.4 mm. Once you read the code that way, LR44 vs PR44 stops looking like a preference and starts looking like a fit check.
Usually no. PR44 is 11.6 × 5.4 mm at 1.4 V (ZincAir). LR44 is 11.6 × 5.4 mm at 1.5 V (Alkaline). Those are not the same part.
If the spent cell or tray said LR44, specify that code. Forcing PR44 can crack a cover, lose contact, or apply the wrong voltage.
Usually no. Going the other way does not fix a diameter, thickness, or voltage miss. LR44 in a PR44 holder has the same problem with the names flipped.
If you arrived from a LR44 vs PR44 search, stay on this page. The answer does not change.
Retail packs hide the IEC size behind house codes. PR44 also appears as 675A, PR44, BLUE675. LR44 also appears as AG13, A76, LR1154. Those prefixes do not change the outline unless the chemistry letters change (BR, LIR, ML, PR).
You do not need a full datasheet to settle PR44 vs LR44. You need the stamp, the tray, or a cheap pair of calipers. A store bin labeled only “button cell” or “3V lithium” will not do that work for you.
Color tabs (blue 675) are there for a reason — do not shop by outline alone.
Do not stack cells, grind a can, or use foil as a permanent spacer to fake LR44 with PR44. Read the stamp, then the spec table. If the door will not close without force, you have the wrong height or diameter.
They share the PR44/LR44 outline. Hearing aids need zinc-air (blue tab 675); toys need alkaline LR44/AG13.
Yes. PR44 vs LR44 and LR44 vs PR44 are the same pair. Fit, voltage, and chemistry do not change when you flip the order.
Use this guide as a starting point, then confirm voltage, chemistry, and physical size with your device manual or the marking on the old cell.
Reviewed by PlainBattery Technical Review Desk on 2026-08-25. Checked: both model identities and dimensions, voltage and chemistry differences, physical fit, interchangeability conclusion and safety warnings.
Revision record: source citations and field-level review scope added September 11, 2026. See our sources and methodology and corrections policy.
