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SR Silver Oxide Batteries
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| Model | Nominal Voltage (V) |
Nominal Capacity (mAh)* |
Nominal Discharge Current (µA) |
Diameter (mm) |
Height (mm) |
Weight (g) |
|---|---|---|---|---|---|---|
| High drain type | ||||||
| SR44W | 1.55 | 165 | 200 | 11.6 | 5.4 | 2.2 |
| SR43W | 1.55 | 125 | 200 | 11.6 | 4.2 | 1.8 |
| SR1130W | 1.55 | 79 | 100 | 11.6 | 3.05 | 1.2 |
| SR1120W | 1.55 | 55 | 100 | 11.6 | 2.05 | 1.0 |
| SR936W | 1.55 | 75 | 100 | 9.5 | 3.6 | 1.1 |
| SR927W | 1.55 | 60 | 100 | 9.5 | 2.73 | 0.8 |
| 57 | ||||||
| SR920W | 1.55 | 39 | 100 | 9.5 | 2.05 | 0.6 |
| SR41W | 1.55 | 39 | 50 | 7.9 | 3.6 | 0.7 |
| SR726W | 1.55 | 28 | 50 | 7.9 | 2.6 | 0.5 |
| SR721W | 1.55 | 25 | 50 | 7.9 | 2.15 | 0.5 |
| SR626W | 1.55 | 28 | 50 | 6.8 | 2.6 | 0.4 |
| SR621W | 1.55 | 18 | 50 | 6.8 | 2.15 | 0.3 |
| Low drain type | ||||||
| SR44SW | 1.55 | 165 | 200 | 11.6 | 5.4 | 2.2 |
| SR43SW | 1.55 | 110 | 100 | 11.6 | 4.2 | 1.7 |
| SR1136SW | 1.55 | 100 | 100 | 11.6 | 3.6 | 1.6 |
| SR1130SW | 1.55 | 83 | 100 | 11.6 | 3.05 | 1.2 |
| SR1120SW | 1.55 | 55 | 100 | 11.6 | 2.05 | 1.0 |
| SR1116SW | 1.55 | 29 | 50 | 11.6 | 1.65 | 0.7 |
| SR936SW | 1.55 | 71 | 100 | 9.5 | 3.6 | 1.1 |
| SR927SW | 1.55 | 55 | 100 | 9.5 | 2.73 | 0.8 |
| SR920SW | 1.55 | 45 | 50 | 9.5 | 2.05 | 0.6 |
| 39 | 0.7 | |||||
| SR916SW | 1.55 | 26.5 | 50 | 9.5 | 1.65 | 0.5 |
| SR914SW | 1.55 | 22 | 35 | 9.5 | 1.45 | 0.45 |
| SR916SW | 1.55 | 26.5 | 50 | 9.5 | 1.65 | 0.5 |
| SR41SW | 1.55 | 45 | 50 | 7.9 | 3.6 | 0.7 |
| SR731SW | 1.55 | 36 | 50 | 7.9 | 3.1 | 0.7 |
| SR726SW | 1.55 | 33 | 50 | 7.9 | 2.6 | 0.5 |
| SR721SW | 1.55 | 25 | 30 | 7.9 | 2.1 | 0.5 |
| SR716SW | 1.55 | 23 | 30 | 7.9 | 1.68 | 0.3 |
| 22 | ||||||
| SR712SW | 1.55 | 10 | 20 | 7.9 | 1.29 | 0.25 |
| SR626SW | 1.55 | 30 | 30 | 6.8 | 2.6 | 0.4 |
| 28 | ||||||
| SR621SW | 1.55 | 23 | 30 | 6.8 | 2.15 | 0.3 |
| 18 | ||||||
| SR616SW | 1.55 | 16 | 20 | 6.8 | 1.65 | 0.3 |
| 15 | ||||||
| SR527SW | 1.55 | 17 | 30 | 5.8 | 2.7 | 0.3 |
| SR521SW | 1.55 | 16 | 20 | 5.8 | 2.15 | 0.2 |
| 14 | ||||||
| SR516SW | 1.55 | 11.5 | 20 | 5.8 | 1.65 | 0.2 |
| SR512SW | 1.55 | 5.5 | 5 | 5.8 | 1.25 | 0.14 |
| SR421SW | 1.55 | 12 | 20 | 4.8 | 2.15 | 0.17 |
| SR416SW | 1.55 | 8 | 10 | 4.8 | 1.65 | 0.12 |
| General type | ||||||
| SR44 | 1.55 | 165 | 200 | 11.6 | 5.4 | 2.2 |
| SR43 | 1.55 | 125 | 200 | 11.6 | 4.2 | 1.8 |
| SR1130 | 1.55 | 79 | 100 | 11.6 | 3.05 | 1.2 |
| SR1120 | 1.55 | 55 | 100 | 11.6 | 2.05 | 1.0 |
| SR41 | 1.55 | 39 | 50 | 7.9 | 3.6 | 0.7 |
| 4SR44 | 6.2 | 165 | 200 | 13 | 25.2 | 11.7 |
| * | Nominal capacity indicates the duration until the voltage drops to 1.2V when discharged at a nominal discharge current at 20 deg. C. |
| • | Data and dimensions are reference values only. For further details, please contact your nearest Maxell office. |
| Product Safety Data Sheet |  |
Down load(44kb) |
OVERVIEW
Maxell is the first company in Japan to successfully market button-type silver oxide batteries. Based on many years of experience and know-how in various fields, the SR battery is suitable for precision electronic devices such as quartz watches, where high-energy density per unit volume and a stable operating voltage are required. Various product lineups are available to meet the growing need for supplying power to various types of watches, ranging from large to compact, thin models. Zero-mercury, zero-lead added types are also available. For more information, please contact Maxell.
CONSTRUCTION
PRINCIPLE AND REACTIONS
The button-type silver oxide battery uses silver oxide (Ag2O) as its positive active material and zinc (Zn) as its negative active material. Potassium hydroxide (KOH) (W-type) or sodium hydroxide (NaOH) (SW-type) is used as an electrolyte.
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FEATURES
| • | Flat discharge characteristics A flat discharge curve during discharge supplies a stable voltage until the end of the discharge life. |
| • | High-energy density High-energy density per unit volume provides approx. twice as the amount of energy capacity as button-type alkaline batteries. |
| • | Excellent discharge load characteristics Employing an alkaline electrolyte, the SR battery features excellent discharge load characteristics. Depending on the composition of the electrolytes, two models are available; (1) a low-drain type for analog watches, and (2) a high-drain type for multi-function watches incorporating an alarm, illumination light, etc. |
| • | Superior leakage* resistance Featuring Maxell's original leak-resistant processing, the SR battery has excellent leakage resistance, which suppresses the electrolyte from rising up and seeping out — a basic phenomenon of alkaline electrolytes. (* Leakage is defined as an unintended escape of liquid from a battery.) |
APPLICATION
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Calculators |
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Film Cameras | |
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Watches | |
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Medical Instruments, Cash Registers | |
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FA Instruments (Measuring Instruments, Onboard Microcomputers, Sensors) |
| • | Data and dimensions are not guaranteed but reference values. For further details, please contact us at your nearest Maxell office. |
| • | Contents on this website are subject to change without notice. |
