# Battery, 1.55 V, SR63, Silver Oxide, 15 mAh, Pressure Contact, 1
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**URL**: https://novapart.co/products/20379903501/battery-155-v-sr63-silver-oxide-15-mah-pressure
**SKU**: 20379903501
**Manufacturer**: VARTA
**Category**: Batteries & Chargers || Batteries - Non-Rechargeable
**Price**: €0.4690
**Stock**: 10+
## Description
The VARTA 20379903501 is a silver oxide button cell battery from the V 379 MF Series, featuring a nominal voltage of 1.55V and typical capacity of 15mAh under standard discharge conditions (68.1kΩ load at 20°C to 1.2V end voltage). This SR63 size battery, designated SR521SW per IEC standards, employs a sodium hydroxide (NaOH) electrolyte system within a silver oxide/zinc chemistry, delivering stable voltage characteristics and energy density of approximately 24mWh. The cell measures 5.8mm maximum diameter by 2.15mm maximum height with a 2.60mm shoulder diameter, weighing 0.23g, and utilizes pressure contact terminals for reliable electrical interfacing in compact assemblies.
Engineered for precision power applications, this non-rechargeable primary cell operates across 0°C to 60°C for both storage and discharge, with extended temperature range applications requiring direct consultation with the manufacturer. The V 379 MF Series construction provides consistent capacity delivery under continuous light drain conditions, as evidenced by 665-hour discharge duration at 68.1kΩ load. Typical implementations include analog and digital wristwatches, small electronic timers, calculators, medical monitoring devices, and other portable electronics demanding stable 1.55V output with minimal self-discharge characteristics. The pressure contact terminal configuration facilitates straightforward integration into spring-loaded battery compartments and surface-mount holders common to miniaturized consumer and industrial electronics.
## Specifications
| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| Weight | 0.23g |
| Pack Quantity | 1 |
| Product Range | V 379 MF Series |
| Battery Voltage | 1.55V |
| External Height | 2.15mm |
| Battery Capacity | 15mAh |
| Battery Iec Code | SR521SW |
| Battery Neda Code | - |
| Battery Size Code | SR63 |
| Battery Terminals | Pressure Contact |
| External Diameter | 5.8mm |
| Battery Compliance | - |
| Battery Technology | Silver Oxide |
| Battery Type / Size | Button Cell |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3287629/)
**V 379 MF**
**Silver Oxide / Zinc**
## **Data Sheet**
**Type Number ……………………………** 20379 **Designation IEC ………………………..** SR521SW (SR63) Silver Oxide / Zinc / **System …………………………….……..** NaOH - Electrolyte **Nominal Voltage ………………………..** 1,55 V **Typical Capacity C ……………….…….** 15 mAh Load 68,1 kOhm, at 20°C down to 1.2 V **Weight (approx.) …………………………** 0,23 g **Volume ……………………………………** 0,06 ccm **Coding…………………………………….** Date of Manufacturing Month/Year **Temperature Ranges** min max. Storage …………………………………… 0°C 60°C Discharge ………………………………… 0°C 60°C *** Dimensions** min max. Diameter (A) ...……………………………. 5,65 5,80 Height (B) ………………………………… 1,95 2,15 Shoulder Diameter[E]…………………….. 2,60 Shoulder Height [C]………………………. 0,06
## **Typical Capacities (at 20°C)**
**==> picture [448 x 57] intentionally omitted <==**
**----- Start of picture text -----**
|||
|---|---|
|Discharge Type Load End Voltage: 1.2 V|
|Continuous|68100 Ω Time: 665 h|
|24h/d,7d/w Capacity [mAh]: 15|
|Current [µA]: Energy [mWh]: 24|
**----- End of picture text -----**
***** Contact VARTA if the application is intended to be outside the range of 0°C to +60°C.
_Information and contents in this data sheet are for reference purpose only. They do not constitute any warranty or representation and are subject to change without notice. For most current information and further details, please contact your VARTA representative._
**VARTA Microbattery GmbH, Daimlerstr. 1, D-73479 Ellwangen/Jagst** Subject to change without prior notice! **Tel.: (+49) 7961/921-0, Telefax: (+49) 7961/921-553** Date of issue: 2014-12-12
## Links
- [View this product on Novapart](https://novapart.co/products/20379903501/battery-155-v-sr63-silver-oxide-15-mah-pressure)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/varta/20379903501/battery-silver-oxide-1-55v-0-015ah/dp/3287629)
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