not to scale.
Name.
Diameter × Thickness.
Contacts:
Case and flat side Positive.
Raised area Negative
Silver Oxide (Ag2O).
(28 mAh).
1.55 volts
(30 mAh)
(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.
Do not confuse with these other batteries listed as "39"
341 (39); LR54 (RW39); AD39 (Alldry 39).
Do not confuse this "RW329" with the 329 (D329) which is a different size.
Equivalents:
37, 39, 43, 77, 177, 280-39, 280-72, 280-101, 376, 377, 377-1, 377A, 565, 606, 606A, 619, 1176A, 1176SO, 1196SO, 28039, 280101, AG4, BA, CX66, CX626, D2V, D376, D377, E376, E377, E377CA, G4, G4A, GP77, GP377, GS4, KS377, L626, LR626, LR66, MA, R377/77, RW329, S626, SB-AW, SB-BW, SG4, SP377, SR66, SR626, SR626SW, SR626W, V377, V565,
| Image not to scale. | Common Name. | Dimensions. Diameter × Thickness. | Chemical Composition. | Nominal Voltage. |
|---|---|---|---|---|
|
| LR66. | 6.8 mm × 2.6 mm Contacts: | Alkaline, Silver Oxide (Ag2O). | 1.5 volts (28 mAh). 1.55 volts |