20399903501

Battery, 1.55 V, SR57, Silver Oxide, 42 mAh, Pressure Contact, 1

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: VARTA
Product type: Batteries - Non-Rechargeable
SVHC: To Be Advised
Weight: 0.75g
Pack Quantity: 1
Product Range: -
Battery Voltage: 1.55V
External Height: 2.7mm
Battery Capacity: 42mAh
Battery IEC Code: SR926
Battery NEDA Code: 1165SO
Battery Size Code: SR57
Battery Terminals: Pressure Contact
External Diameter: 9.5mm
Battery Compliance: -
Battery Technology: Silver Oxide
Battery Type / Size: Button Cell

Delivery and price
Units per pack	100
Price	0.84 €
Current stock	10+
Lead time	30 days

Datasheet

**V 399 MF** 

**Mercury - free Primary Silver** 

## Data Sheet 

**==> picture [319 x 359] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|Type Number …………………………….|20399|
|Designation IEC …………………………|SR 57|
|System …………………………….………|Silver oxide / Zinc /|
|KOH - Electrolyte|
|Nominal Voltage …………………………|1,55 V|
|Typical Capacity C ……………….……..|42 mAh|
|Load 13 kOhm, at 20°C down to 1.2 V|
|Weight (approx.) …………………………|0,75 g|
|Volume …………………………………….|0,17 ccm|
|Coding……………………………………..|Date of Manufacturing|
|Month / Year|
|Temperature Ranges|min               max.|
|Storage …………………………………….|-10°C            65°C|
|Discharge ………………………………….|-10°C            65°C|
|Dimensions|min               max.|
|Diameter (∅) ..…………………………….|9,15              9,5|
|Height  (A/B) ………………………………|2,4                2,7|
|Segment …………………………………..|Watch / High Drain|
|Main Applications …………………..…..|Watch|
|Photo|
|Electronic|

**----- End of picture text -----**<br>


## **Typical Capacities (at 20°C)** 

**==> picture [442 x 57] intentionally omitted <==**

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|||
|---|---|
|Discharge Type                          Load            End Voltage:      1.2 V|
|Continuous|13000 Ω        Time:                   375 h|
|24h/d,7d/w                                                        Capacity [mAh]:    42|
|Current [µA]:                                   120            Energy [mWh]:      67|

**----- End of picture text -----**<br>


VARTA Microbattery GmbH Daimlerstraße 1, 73479 Ellwangen, Germany Tel.: +49 79 61 921-0 Telefax: +49 79 61 921-553 

Subject to change without prior notice ! 

Date of Issue: 17.12.2010

Updated at April 28, 2026

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