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.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Description

⏱️ Power your moments with precision and style!

TOP RATED TRUSTED - 4.6-star rating from over 7,000 users—join the satisfied pros.
AUTHENTIC JAPANESE QUALITY - Crafted in Japan for superior performance and longevity.
VALUE PACKED 5 BATTERY SET - Keep your timepieces ticking with a convenient multi-pack.
ULTRA COMPACT LIGHTWEIGHT - Slim design fits seamlessly into most watch models without bulk.
RELIABLE 1 55 V SILVER OXIDE POWER - Consistent voltage ensures your watch never misses a beat.

The Maxell SR626SW 377 Silver Oxide Watch Battery delivers a steady 1.55V output with a 27mAh capacity, engineered in Japan for premium reliability. This 5-pack ensures you’re always prepared to keep your watches running smoothly, backed by a strong 4.6-star user rating.

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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R$71

Duties & taxes included

In stock

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago