CR2032 vs LR44
Shoppers pair these because both are common “button” batteries. CR2032 is a 20 × 3.2 mm, 3V lithium coin. LR44 (AG13) is an 11.6 × 5.4 mm, 1.5V alkaline cell. Size and voltage both miss.
Last verified Aug 25, 2026
Never interchangeable. Match the code on the old cell — do not shop by “round battery.”
A LR44 vs CR2032 swap fails on voltage, chemistry, diameter, thickness, 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 stack two LR44 cells to fake 3V in a CR2032 holder. Voltage, polarity, and holder geometry are wrong, and coin-cell stacking is a safety hazard.
CR2032 and LR44 are easy to mix up in a parts bin, but the outline and electrical class are not the same product. Highlighted rows are the ones that change the purchase: voltage, chemistry, diameter, thickness, 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 | CR2032 | LR44 |
|---|---|---|
| Chemistry | LiMnO2 | Alkaline |
| Nominal voltage | 3 V | 1.5 V |
| Diameter | 20 mm | 11.6 mm |
| Thickness | 3.2 mm | 5.4 mm |
| Outline | 20 × 3.2 mm | 11.6 × 5.4 mm |
| Typical capacity | 220–240 mAh | 110–130 mAh |
| Typical energy | 0.66–0.72 Wh | — |
| Typical weight | 3.1 g | — |
| Fresh open-circuit voltage | 3.2–3.4 V | — |
| Unused shelf life | ~10 years | ~3 years |
| Category | lithium-coin | alkaline-button |
| Common aliases | DL2032, ECR2032 | AG13, A76, LR1154, 76A |
If you searched LR44 vs CR2032, you are on the same comparison with the names reversed. The difference between CR2032 and LR44 batteries is not the word “vs” — it is the specs that do not match after you ignore the similar photos.
CR2032 is 20 mm across; LR44 is 11.6 mm. That gap is enough for one cell to miss the clip entirely or rattle in the other tray. IEC codes put diameter in the first digits for a reason: you cannot sand a coin cell down to fit.
CR2032 is 3.2 mm thick; LR44 is 5.4 mm. Holders are built for one stack height. The thinner cell loses spring pressure (“works only when I press the cover”). The thicker cell jams the door or bends the clip.
Nominal voltage is not a rounding error here. CR2032 is 3 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, CR2032 (LiMnO2) 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 CR2032 capacity is 220–240 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.
Size: 20 × 3.2 mm vs 11.6 × 5.4 mm
CR2032 is a coin cell; LR44 is a thicker button cell
Putting LR44 in a 3V tray will not seat; forcing a CR2032 into an LR44 toy can crack the case
Coin and button codes are rulers, not brand slogans. The letters mark chemistry class. The digits encode size. CR2032 measures 20 × 3.2 mm; LR44 measures 11.6 × 5.4 mm. Once you read the code that way, LR44 vs CR2032 stops looking like a preference and starts looking like a fit check.
Usually no. CR2032 is 20 × 3.2 mm at 3 V (LiMnO2). 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 CR2032 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 CR2032 holder has the same problem with the names flipped.
If you arrived from a LR44 vs CR2032 search, stay on this page. The answer does not change.
Retail packs hide the IEC size behind house codes. CR2032 also appears as DL2032, ECR2032. 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 CR2032 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.
Silver oxide SR44/357 is the upgrade path for LR44, not CR2032. Lithium vs alkaline “2032” listings are usually mislabeled CR2032 cells.
Do not stack cells, grind a can, or use foil as a permanent spacer to fake LR44 with CR2032. Read the stamp, then the spec table. If the door will not close without force, you have the wrong height or diameter.
No. Half the voltage and a completely different size. The tray will not accept it correctly.
No. They are different standardized sizes. CR2032 is 3V lithium at 20 mm; LR44 is 1.5V alkaline at 11.6 mm.
Yes. CR2032 vs LR44 and LR44 vs CR2032 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.
