What is the expiration date on these batteries?

My set is dated 06-2015. I have used them all but 1 and no problems here.

How can you tell if a silver oxide watch battery is bad before inserting it into the watch?

Use a voltmeter. The battery is kind of small so it may take a little doing but put one metal lead on positive side (+) and one lead on the negative side (-). The voltage is what determines whether the battery is "good" or "bad". On these batteries I think it starts at close to 1.7 volts and will fall from there. Most devices will stop working when the battery drops below 1.0 volts though my old game boy would keep working until about .8 volts and I suspect a watch could take it even lower. It just depends on the device.

Has anyone used these batteries on michael kors watches? i cant seem to find the battery size on google for michael kors watches

I am surprised that Michael Kors watch tech support was unable to assist you. Contact for the US: 1-866-709-5677 or watches@michaelkors.com Contact for Canada: 1-855-898-5677 or service@metroservicecentrecanada.ca Monday - Friday: 8am to 7pm CST Saturday: 9:30am to 6pm CST

measures about 7mm(9/32") dia and 2.8mm(7/64") high

Maxell Sr626sw 377 Silver Oxide Watch Battery 5 Pack

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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Description

⏱️ Keep time flawless with Maxell’s power-packed precision!

COMPACT LIGHTWEIGHT DESIGN - Minimal bulk, maximum convenience for everyday wear
PACK OF 5 FOR ULTIMATE VALUE - Keep your watches ticking without frequent repurchases
TRUSTED JAPANESE CRAFTSMANSHIP - Maxell’s renowned quality ensures durability and performance
PERFECT FIT FOR POPULAR WATCHES - Compatible with Casio and other leading brands for seamless replacement
RELIABLE 1 55 V SILVER OXIDE POWER - Consistent voltage for precision timekeeping

Maxell SR626SW 377 Silver Oxide Watch Battery 5 Pack delivers reliable 1.55V power with 27mAh capacity, crafted in Japan for superior quality. Ideal for popular watch brands like Casio, this pack ensures long-lasting performance and value, keeping your timepieces running smoothly wherever life takes you.

Specifications

ASIN	B002S49V24
Amperage	5 Amps
Antenna Location	Watch
Battery Capacity	27 Milliamp Hours
Battery Cell Composition	Silver Oxide
Battery Cell Type	Silver Oxide
Best Sellers Rank	#31,873 in Health & Household ( See Top 100 in Health & Household ) #209 in Coin & Button Cell Batteries
Brand	Maxell
Customer Reviews	4.6 out of 5 stars 7,293 Reviews
Item Dimensions	0.12 x 2.76 x 1.97 inches
Item Weight	0.02 Pounds
Manufacturer	Maxell
Model Name	Watch battery
Model Number	SR626SW5
Number of Batteries	1 LR44 batteries required.
Recommended Uses For Product	Watch
Reusability	Single Use
UPC	704740102146 025215741074 762022256307 762022256062
Unit Count	5.0 Count
Voltage	1.55 Volts

Reviews

D**E

Good quality

Great price

20.05.2026

P**R

Works in my and my wife’s Casio watches which wecwear on vacation.

Came wuickly and well packaged. Fits Casio watches.

12.06.2026

T**Y

Good

great price on solid brand

7.04.2026

B**F

Fresh set of batteries -- good until 2030

Arrived 3 days late hence 4 instead of 5 stars. Otherwise, the batteries look good. Sealed package with the number of batteries I expected, and a use by date of 2030, so these are fresh!

12.01.2026

B**R

Quality Batteries and Shipped Fast!

The batteries are exactly what I was expecting. Shipping was fast. Thank you for a great transaction.

14.07.2026

A**R

Delivery speed and good product

Great product

17.07.2026

B**S

Good

Perfect replacement for my watch

3.07.2026

C**R

watch battery

great

9.07.2026

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