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Specialty cylindrical

4LR44 battery: equivalents & specs

The 4LR44 is a 6 volt alkaline battery built from four LR44-size cells stacked in a 13 by 25.2 mm cylinder. Sold as A544, PX28A or 476A, it is the standard battery for dog training collars and a common fit for vintage film SLRs.

4LR44 battery drawing: 13 mm across, 25.2 mm tall 4LR44 25.2 mm ⌀ 13 mm
4LR44, side view, drawn to scale: 13 mm across, 25.2 mm tall.
Voltage
6 V
Size (D×H)
13 × 25.2 mm
Chemistry
Alkaline (4-cell stack)
Capacity
110-150 mAh

Same battery, other names

Every code below is the exact same cell as 4LR44. Any of them will fit and work identically.

A544PX28A476A4A76V4034PXL1325

Compatible replacements

  • 4SR44 / PX28: Silver-oxide version at 6.2 V with steadier output, preferred for vintage camera meters.
  • 2CR1/3N / 28L: Lithium 6 V alternative with long shelf life and better cold performance; slightly narrower, check fit.

Buying and replacement notes

Energizer's A544 and Duracell's PX28A are this exact battery, a point worth knowing because listings often present them as different products at different prices. Dog collar owners buy most of today's supply, and for that use the alkaline is fine. Vintage camera shooters should weigh the silver 4SR44 (stable metering voltage) or lithium 28L (shelf life) instead. In a pinch, four stacked LR44s deliver the same 6 volts and usually work.

Commonly used in

dog training and bark collarsvintage film cameras (Canon AE-1 and others)insulin pumps (older)beauty devices

Need a replacement?

Shop 4LR44 batteries on Amazon →

Comparisons

4LR44 vs 4SR44

⚠️ Keep away from children. Swallowed button batteries, especially 20 mm lithium coins, cause severe injury within hours. If a child swallows one, call the 24/7 National Battery Ingestion Hotline (US) at 800-498-8666 or poison control at 800-222-1222 immediately. What every parent should know.

Frequently asked questions

Are the 4LR44 and A544 the same battery?
Yes. A544 is Energizer's catalog name and PX28A Duracell's for the identical 6 V alkaline stack, 13 x 25.2 mm. 476A, 4A76 and V4034PX are further aliases. If a listing shows the right dimensions and 6 V alkaline chemistry, it is this battery.
Can I use four LR44 batteries instead of a 4LR44?
Usually yes: four LR44s stacked in series match the voltage and very nearly the dimensions, and dog collar forums are full of people doing exactly this. The factory-sleeved battery aligns better and cannot separate inside the compartment, so it remains the tidier choice.
Which version is best for a vintage camera?
The silver-oxide 4SR44 (PX28) holds its voltage nearly flat, which keeps voltage-sensitive light meters accurate as the battery ages. The alkaline 4LR44 works in cameras with bridge-circuit meters. The lithium 28L excels for cold weather and long storage between uses.

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