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Home › Batteries › Size 675
Hearing aid battery

Size 675 battery

1What it is2Safety3Other names4Facts5Buy it6Swaps
  1. 1

    What it is

    675STICKER

    Size 675 is a hearing aid battery, about as wide as a shirt button. It gives 1.45 volts.

    Get Size 675 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 →

    Leave the sticker on until you need it

    Once the sticker is off, the battery starts running down whether you use it or not.

  3. 3

    Names you might see in the store

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

    PR44675A675ZA675V675
  4. 4

    Quick facts

    Size
    About as wide as a shirt button
    Thickness
    As thick as 7 credit cards stacked
    Power
    1.45 volts
    Keeps in a drawer for
    About 3 years
    Rechargeable?
    No, use once
    Found in things like
    Power behind-the-ear hearing aidsCochlear processors
  5. 5

    Where to buy it

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

    Our pickThe exact match, 4-packEnergizer Size 675 1.45V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerSize 675 1.45V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell, the same batteryDuracell Size 675 / Size 675 1.45V Battery
    Check Price on Amazon →

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

  6. 6

    Can I use something else?

    Can I use 675 instead of LR44?No
Show more details (optional)

See it at real size

Size 675 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

Size 675Thickness 5.4US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read Size 675:

675Hearing-aid size code, blue tab colour
PR44IEC zinc-air designation, 11.6 × 5.4 mm

The same battery from each brand

BrandTheir name for it
Official namePR44
Shop nameSize 675
Renata (Swiss)ZA675
VartaV675

Exact measurements

Width
11.6 mm (0.457 in)
Thickness
5.4 mm
Voltage
1.45V (empty at 1.1V)
Energy stored
620 mAh
Weight
1.8 g
Made with
Zinc-air
Works between
0 … 50 °C
Official code
PR44

Questions people ask

Is Size 675 the same as PR44?

Yes. They’re the same battery with different names. You might also see PR44, 675, A675, ZA675.

How long will a spare keep in a drawer?

About 3 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.

675STICKER
Size 675Hearing aid battery
Get Size 675 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

Something wrong or missing? Tell us

1What it is2Safety3Other names4Facts5Buy it6Swaps