Zinc Air Cells reference
PR44
Battery equivalent chart, replacements, and specs
PR44 aliases and equivalent names
Common search labels and closely related markings include 675A, BLUE675, DA675. Packaging conventions vary, so confirm the compatibility grade, voltage, chemistry, and dimensions shown below before replacing the battery.
Voltage
1.4 V
Chemistry
ZincAir
Capacity
600–650 mAh
Size
11.6×5.4 mm
PR4411.6 × 5.4 mm
Safety: Zinc-air cells are for hearing aids and approved devices only. Keep away from children; do not swallow button cells.
Exact equivalents
Exact- 675 — Retail size — blue tab
- PR44 — IEC zinc-air label
- DA675 — Duracell
Do not use
Not Compatible- LR44 — Same outline — alkaline, NOT for hearing aids
- SR44 — SR44/357 silver oxide is for watches — wrong chemistry for zinc-air aids
Technical data
Specifications
| Specification | Value |
|---|---|
| IEC / Common Code | PR44 |
| Chemistry | ZincAir |
| Nominal Voltage | 1.4 V |
| Capacity | 600–650 mAh |
| Cutoff Voltage | ~1.05 V |
| Drain Class | low |
| Dimensions (D × H) | 11.6 × 5.4 mm |
| Typical Weight | 1.8 g |
| Shelf Life | ~3 years (unused, room temp) |
| Polarity / Activation | Remove the seal tab to activate; air holes must remain unobstructed. |
Typical applications
- Power BTE hearing aids
- Cochlear implant accessories
- High-drain assistive devices
Applications
Replacement Compatibility
Side-by-side comparisons
Frequently Asked Questions
Is 675 the same as LR44?
Same physical outline, different chemistry. 675 is zinc-air (blue tab) for hearing aids; LR44 is alkaline for toys and gadgets.
Should I always trust cross-reference charts?
Confirm size color codes and device manuals. Zinc-air cells are not drop-in replacements for silver oxide watch batteries.
Related Batteries
Review record and primary sources
Reviewed by PlainBattery Technical Review Desk on 2026-08-25. Checked: model and alias mapping, nominal voltage and chemistry, physical dimensions, capacity range and replacement warnings.
- Energizer 675 Zinc-Air Product Datasheet — Energizer Brands, 675GL1120 (2020). PR44/675 dimensions, tab color, voltage, capacity and IEC test protocol.
Revision record: source citations and field-level review scope added September 11, 2026. See our sources and methodology and corrections policy.
Selection notes
If a package says 675 hearing aid, do not buy LR44/AG13 even when the size looks identical.
Last verified Aug 25, 2026. Always confirm voltage, chemistry, and dimensions with the device manufacturer before replacing any battery.