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Home › Can I swap? › 4LR44 vs PX28A
Can I swap?

4LR44 vs PX28A: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    YesYes, they’re the same battery4LR44 and PX28A are two names for the exact same battery. Use either one.
    4LR44
    4LR44Short and skinny, about 2.5 cm long
    4LR44
    PX28AShort and skinny, about 2.5 cm long
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  2. 2

    Both ways round

    Can I put PX28A where 4LR44 goes?Yes
    Can I put 4LR44 where PX28A goes?Yes
  3. 3

    What’s different

    4LR44PX28A
    SizeShort and skinny, about 2.5 cm longShort and skinny, about 2.5 cm long Same
    LengthShort and skinny, about 2.5 cm longShort and skinny, about 2.5 cm long Same
    Power6 volts6 volts Same
    Kind6-volt specialty battery6-volt specialty battery

    Lasts longer: Same

  4. 4

    Where to buy 4LR44

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

    Our pickThe exact match, 4-packEnergizer 4LR44 6.0V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawer4LR44 6.0V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell PX28A, the same batteryDuracell PX28A / 4LR44 6.0V Battery
    Check Price on Amazon →

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

    Get PX28A on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About 4LR44About PX28ACheck another pair
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Questions people ask

Can I use PX28A instead of 4LR44?

Yes. 4LR44 and PX28A are two names for the exact same battery. Use either one.

Can I use 4LR44 instead of PX28A?

Yes. 4LR44 and PX28A are two names for the exact same battery. Use either one.

Which one lasts longer?

They last about the same.

All the numbers

4LR44PX28A
Diameter13.0 mm13.0 mm
Height25.2 mm25.2 mm
Nominal voltage6.0V6.0V
Typical capacity150 mAh150 mAh
ChemistryAlkaline (stacked cells)Alkaline (stacked cells)
Shelf life5 yrs5 yrs
Operating temp-10 to 50 °C-10 to 50 °C
Can I use PX28A instead of 4LR44?Yes
Get 4LR44 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

Something wrong or missing? Tell us

1The short answer2Both ways3Differences4Buy it5Learn more