Features
– Stable discharge characteristics
Maxell SR Battery unique discharge curve supplies a stable voltage until the end of the discharge life.
– High-energy density
High-energy density per unit volume of the Maxell SR Battery provides approx. twice the amount of energy capacity compare to the alkaline batteries.
– Excellent discharge load characteristics
Employing an alkaline electrolyte, the Silver Oxide 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 Silver Oxide battery has excellent leakage resistance, by suppresses the electrolyte from rising up and seeping out — a basic characteristics of alkaline electrolytes.
(* Leakage is defined as an unintended escape of liquid from a battery.)
– Taking environment in consideration
As part of Maxell environmental measures to reduce the environmental impact, Maxell uses its proprietary technology to achieve longer-lasting, superior leakage-resistant characteristics without using mercury and lead.
Principle and Reactions
The 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.
Battery Reactions
- Positive reaction Ag2O+H2O+2e- -> 2Ag+2OH
- Negative reaction Zn+2OH- -> ZnO+H2O+2e-
- Total reaction Ag2O+Zn -> 2Ag+ZnO
Applications
- Watches
- Calculators
- Medical Instruments
- Measuring Instruments
