20391903501

Battery, Mercury Free, Primary Silver, Single Cell, 1.55 V, SR55, Silver Oxide, 42 mAh, Flat Top, 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
Battery Voltage:1.55V; Battery Size Code:SR55; Battery Technology:Silver Oxide; Battery Capacity:42mAh; Battery Terminals:Flat Top; External Diameter:11.6mm; External Height:2.1mm; E
SVHC: To Be Advised
Weight: 0.9g
Pack Quantity: 1
Product Range: -
Battery Voltage: 1.55V
External Height: 2.1mm
Battery Capacity: 42mAh
Battery IEC Code: SR55
Battery NEDA Code: 1160SO
Battery Size Code: SR55
Battery Terminals: Pressure Contact
External Diameter: 11.6mm
Battery Compliance: -
Battery Technology: Silver Oxide
Battery Type / Size: Button Cell

Delivery and price
Units per pack	100
Price	1.4 €
Current stock	10+
Lead time	30 days

Datasheet

**V 391 MF** 

**Mercury - free Primary Silver** 

## VARTA 

## Data Sheet 

**==> picture [319 x 400] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|Type Number ……………………………|20391|
|Designation IEC ………………………..|SR 55|
|Silver oxide / Zinc /|
|System …………………………….……..|
|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.) …………………………|
|0,9 g|
|Volume ……………………………………|
|0,18 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 (∅) ..…………………………….|
|11,25|11,6|
|Height  (A/B) ………………………………|
|1,85              2,1|
|Segment …………………………………..|
|Watch / High Drain|
|Main Applications …………………..…..|Watch|
|Photo|
|Electronic|
|Typical Capacities (at 20°C)|

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


**==> picture [476 x 57] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|Discharge Type                               Load        End Voltage:       1.2 V|
|Continuous|13000 Ω      Time:                      340 h|
|24h/d,7d/w                                                          Capacity [mAh]:       42|
|Current [µA]:                                       120          Energy [mWh]:         65|

**----- 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: 02.12.2009

Updated at April 28, 2026

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