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Watch battery · silver oxide

SR754SW (393) battery

SR754SW = 393 = SB-B3. 7.91 × 5.4 mm1 silver oxide, 1.55 V1. Equivalents: SR48, SR48W, V393, B-SR48H, 255, D393 and 2 more (11 codes in 9 code systems, full table).

Sources checked · How we source numbers
SR754SW · 393: drawing to scaleSR754SW · 393: diameter 7.9 mm, height 5.4 mm.Ø 7.9−+5.4SR754SW · 393
SR754SW: face and edge view to scale, from the datasheet sizesDrawing from data, not a photo · mm
Diameter
7.9 mm1
Height
5.4 mm1
Nominal voltage
1.55 V1
IEC designation
SR7541 · SR481

SR754SW equivalents

The same cell under 11 names. Any of them fits where 393 does; the drain type is the column.

Code systemSR48Whigh drainSR48
IECSR7541SR481—
Energizer · Rayovac · Renata3931—
VartaV3931—
SeikoSB-B31—
TimexF1—
Bulova2551—
Omega99151—
BerecB-SR48H1—
MalloryD3931—

Size and chemistry

Diameter
7.9 mm1
Height
5.4 mm1
Nominal voltage
1.55 V1
Chemistry
Silver Oxide2
IEC designation
SR7541 · SR481
1.253461.453411.653152.13622.63973.13293.63845.4393
Every 7.9 mm silver oxide size with a page, edge view to scale. Only the height tells them apart.
Show SR754SW at true size (1:1)
1:1 · not calibrated: sizes are approximate
SR754SW: drawing to scaleSR754SW: diameter 7.9 mm, height 5.4 mm.Ø 7.9−+5.4SR754SW
01020304050

Cell types in this size

2 cell types share the 7.9 × 5.4 mm size.

SR48W

High drain (W): for watches with lights, alarms or chronographs · Silver Oxide2

10 codes in our sources name this cell type.

SR48

Primary cell

0 codes in our sources name this cell type.

LR754

Alkaline cell of the same size: the IEC digits are the size, the L is the chemistry. LR754 lands on this page by that rule; our sources hold no alkaline datasheet for it, so no figures are shown.

Capacity by manufacturer

Energizer 393SR48W

75 mAh2cutoff 1.2 V as printedDatasheet ↗

Can I use another cell instead of 393?

Verdicts follow our swap rules from the datasheet size, voltage and cell type.

Check any other pair

  • Use instead of SR754SW

    SR48W

    Yes

    Yes: SR48W is the same size and chemistry as SR754SW.

    Both are 7.9 mm × 5.4 mm silver oxide, 1.55 V.

    Draw both cells in the swap checker

  • Use instead of SR754SW

    LR754

    Fits, with a catch

    Fits, but LR754 is alkaline and runs shorter.

    Same 7.9 mm × 5.4 mm size. LR754 is an alkaline (L) cell; the watch is made for silver oxide (S). Use it to get the watch going, then fit SR48.

    Draw both cells in the swap checker

  • Use instead of SR754SW

    SR41SW

    No

    No: SR41SW is 1.8 mm thinner than SR754SW.

    Same 7.9 mm diameter, but SR41SW is 3.6 mm against 5.4 mm: the contact spring may not reach it.

    SR41SW: 7.9 mm1 × 3.6 mm1, 1.55 V1

    Draw both cells in the swap checker

What uses 393

No calibre, module or model in our base names SR754SW yet.

Questions

What is the 393 battery equivalent?

SR48, SR48W, V393, B-SR48H, 255, D393, 9915, SB-B3, SR754 name the same 7.9 × 5.4 mm silver oxide cell as 393. Any maker's cell under one of these codes fits; match the drain type (SW or W) when the watch maker names one.

Is 384 the same as 393?

No. SR41SW is 1.8 mm thinner than SR754SW. Same 7.9 mm diameter, but SR41SW is 3.6 mm against 5.4 mm: the contact spring may not reach it.

Is LR754 the same as SR754SW?

No: LR754 is an alkaline cell of the same size, SR754SW is silver oxide. Fits, but LR754 is alkaline and runs shorter. Same 7.9 mm × 5.4 mm size. LR754 is an alkaline (L) cell; the watch is made for silver oxide (S). Use it to get the watch going, then fit SR48.

Sources

Documents checked · Report a wrong number

  1. 1Murata — Watch Battery Selection Guide / Cross Reference · pdf · read
  2. 2Energizer Holdings, Inc. — Product datasheet ENERGIZER 393 · pdf · read