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Home › Batteries › SR736
Watch battery

SR736 is the same as SR41

1What it is2Safety3Other names4Tip5Facts6Buy it7Swaps
  1. 1

    What it is

    SR41+ 1.55V

    SR736 is just another name for SR41. Same battery, different label, so you can buy either one.

    Get SR41 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

    Something wrong or missing? Tell us

  2. 2

    Safety first

    Keep away from children and pets

    A swallowed coin or button battery can cause serious burns inside the body within 2 hours. If you think one was swallowed, get emergency help right away.

    Swallowed one? What to do now →
  3. 3

    Names you might see in the store

    All of these are the same battery. Any of them will work.

    SR41392384D392V392
  4. 4

    Good to know

    This is the better version of LR41

    LR41 fits too and is cheaper, but runs down sooner.

  5. 5

    Quick facts

    Size
    About as wide as a pea
    Thickness
    As thick as 5 credit cards stacked
    Power
    1.55 volts
    Keeps in a drawer for
    About 5 years
    Rechargeable?
    No, use once
    Found in things like
    WatchesMedical thermometers
  6. 6

    Where to buy it

    As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

    Our pickThe exact match, 4-packEnergizer SR736 (SR41) 1.55V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerSR736 (SR41) 1.55V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell D392, the same batteryDuracell D392 / SR41 1.55V Battery
    Check Price on Amazon →

    Buttons open amazon.com 🇺🇸, picked from your country.

  7. 7

    Can I use something else?

    Can I use SR41 instead of LR41?Yes
Show more details (optional)

See it at real size

SR41 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

SR41Thickness 3.6US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read SR736:

SSilver oxide chemistry (1.55V)
RRound coin / button form factor
7≈ 7 mm diameter (exact 7.9 mm, 0.311 in)
363.6 mm thickness (exact 3.6 mm, 0.142 in)

The same battery from each brand

BrandTheir name for it
Official nameSR41
Energizer392
DuracellD392
Murata (formerly Sony)392
Renata (Swiss)392
VartaV392

Exact measurements

Width
7.9 mm (0.311 in)
Thickness
3.6 mm
Voltage
1.55V (empty at 1.2V)
Energy stored
45 mAh
Weight
0.7 g
Made with
Silver oxide
Works between
-10 … 60 °C
Official code
SR41

Questions people ask

Is SR736 the same as SR41?

Yes. They’re the same battery with different names. You might also see SR41, 392, 384, D392.

Can I use LR41 instead?

Yes, in a pinch. Same size, but it runs down a bit sooner.

How long will a spare keep in a drawer?

About 5 years if it stays cool and dry.

Can I recharge it?

No. Never try to recharge it.

Which way up does it go?

Usually with the side marked “+” facing you or facing up. Look at how the old one sits before you take it out.

SR41+ 1.55V
SR41Watch battery
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Something wrong or missing? Tell us

1What it is2Safety3Other names4Tip5Facts6Buy it7Swaps