not to scale.
Name.
Diameter × Thickness.
Contacts:
Case and flat base Positive.
Raised area Negative
Silver Oxide (Ag2O).
1.55 volts(Ag2O).
The differences between LR and SR cells:
LR cells are Alkaline Manganese based and have a lower energy density or capacity and are 1.5volts.
SR cells are Silver Oxide based, have a higher energy density or capacity and are 1.55volts.
See the Notes page for more info.
This very rare coin type cell was once commonplace and used to power Minox C4 flash cubes, some Vitessa cameras, Agfa cameras, Kodak Instamatic cameras and others. The Small Battery Co seem to have some cleverly engineered Alkaline replacements and I've seen Silver Oxide ones on Ebay.
To replace a stack of two of these you can use a 3.0v Lithium coin cell of about the same diameter. My recommendation is a single CR2320, CR2325 or CR2354 (all are 23 mm diameter) and a washer or 2, folded foil etc. as a spacer to replace the two 825's (the common CR2032 may be used but note that it is also 3 mm smaller in diameter).
Equivalents:
1129AP, 7201, A825PX, AMF, BLR53, EPX825, HPX825, KA825, LR53, PX825, RPX825, V825PX,
| Image not to scale. | Common Name. | Dimensions. Diameter × Thickness. | Chemical Composition. | Nominal Voltage. |
|---|---|---|---|---|
|
| LR53. | 23.2 mm × 6.1 mm Contacts: | Alkaline, Silver Oxide (Ag2O). | 1.5 volts. 1.55 volts(Ag2O). |