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Battery Equivalent Chart

13 Battery Equivalent (Hearing Aid)

13 is the same cell as ZA13 and PR48, so any of those codes will fit.

Chemistry
zinc air (hearing aid)
Voltage
1.45 V
Size (Ø × H)
7.9 × 5.4 mm
Typical capacity
280 mAh

IEC designation PR48.

13 drawn to scale: 7.9 mm across and 5.4 mm thick, beside a US quarter at 24.26 mm across. US quarter Ø 7.9 mm 5.4 mm thick
13 at actual relative size: 7.9 mm across, 5.4 mm thick. The dashed circle is a US quarter, 24.26 mm across (US Mint coin specifications).

13 equivalents

Direct replacements

The same cell under another code. Any of these fits, whatever the brand.

  • Orange tab
  • ZA13

Similar size, check the fit

Same diameter, different thickness. These are not drop-in replacements.

Cell Size Verdict
312 7.9 × 3.6 mm Same 7.9 mm diameter, but 3.6 mm tall instead of 5.4 mm. Only if the holder fits; thinner cells can lose contact.

Do not use

These are the same size or a similar code, and they are not equivalents.

  • SR754SW

    Not an equivalent. 13 is the same size, but it is a zinc-air hearing-aid cell: 1.45 V, it needs its air holes left open, and it starts draining as soon as the tab comes off.

  • LR48

    Not an equivalent. 13 is the same size, but it is a zinc-air hearing-aid cell: 1.45 V, it needs its air holes left open, and it starts draining as soon as the tab comes off.

About the 13 cell

Activate by removing the tab; not a substitute for alkaline/silver cells of the same size.

On the shelf it is sold with a Orange tab on the pack : the tab seals the air holes, and the cell starts working, and running down, the moment you pull it off .

13 questions

Is ZA13 the same as 13?
Yes. ZA13 is another code for the same cell: zinc air (hearing aid), 1.45 V, 7.9 × 5.4 mm.
Is PR48 the same as 13?
Yes. PR48 is another code for the same cell: zinc air (hearing aid), 1.45 V, 7.9 × 5.4 mm.
Will 312 work in place of 13?
Same 7.9 mm diameter, but 3.6 mm tall instead of 5.4 mm. Only if the holder fits; thinner cells can lose contact.
Can I use SR754SW instead of 13?
No. Not an equivalent. 13 is the same size, but it is a zinc-air hearing-aid cell: 1.45 V, it needs its air holes left open, and it starts draining as soon as the tab comes off.
Can I use LR48 instead of 13?
No. Not an equivalent. 13 is the same size, but it is a zinc-air hearing-aid cell: 1.45 V, it needs its air holes left open, and it starts draining as soon as the tab comes off.
What voltage is 13?
13 is a 1.45 V zinc-air cell with a typical capacity of 280 mAh.
What size is 13?
7.9 mm across and 5.4 mm thick, the same case size as the PR48 designation.

Related

Other cells 7.9 mm across

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