AG12 Battery Equivalent
AG12 is the LR43 cell: 1.5 V alkaline, 11.6 × 4.2 mm, so anything marked 186, L1142 and LR1142 is the same battery and will fit.
Full LR43 page: every equivalent, the sizes and what not to use
- Chemistry
- alkaline
- Voltage
- 1.5 V
- Size (Ø × H)
- 11.6 × 4.2 mm
- Typical capacity
- 80 mAh
IEC designation LR1142.
What the AG12 code is
AG12 is a generic trade number rather than an IEC designation. The AG series is common on generic and own-brand alkaline cells, sold in strips and multipacks, and it numbers the sizes in sequence instead of describing them.
The IEC code for the same cell is LR43, which is the number you will find on branded packs and in device manuals.
LR43 equivalents
Direct replacements
The same cell under another code. Any of these fits, whatever the brand.
- 186
- AG12
- L1142
- LR1142
Upgrade or downgrade
Same size, different chemistry. Read the verdict before you buy.
| Cell | Chemistry | Voltage | Verdict |
|---|---|---|---|
| SR43 | silver oxide | 1.55 V | Upgrade Upgrade: steadier voltage, longer life. |
Similar size, check the fit
Same diameter, different thickness. These are not drop-in replacements.
| Cell | Size | Verdict |
|---|---|---|
| LR1120 | 11.6 × 2.1 mm | Same 11.6 mm diameter, but 2.1 mm tall instead of 4.2 mm. Only if the holder fits; thinner cells can lose contact. |
| LR1130 | 11.6 × 3.1 mm | Same 11.6 mm diameter, but 3.1 mm tall instead of 4.2 mm. Only if the holder fits; thinner cells can lose contact. |
| LR44 | 11.6 × 5.4 mm | Same 11.6 mm diameter, but 5.4 mm tall instead of 4.2 mm. Only if the holder fits; thinner cells can lose contact. |
Do not use
These are the same size or a similar code, and they are not equivalents.
-
AC41E
Zinc-air hearing-aid cell: same size, but 1.45 V, needs air holes and drains once unsealed.
AG12 questions
- What battery is AG12?
- AG12 is the LR43: a 1.5 V alkaline cell, 11.6 × 4.2 mm, with a typical capacity of 80 mAh.
- Is AG12 the same as LR43?
- Yes. They are two codes for one cell, so a pack marked either way holds the same battery.
- What can I use instead of AG12?
- Any code in the direct replacement list above. SR43 is the same size in another chemistry: Upgrade: steadier voltage, longer life.
- Is AC41E a AG12 replacement?
- No. Zinc-air hearing-aid cell: same size, but 1.45 V, needs air holes and drains once unsealed.
- What voltage is AG12?
- 1.5 V, the same as any other LR43.