Watch Battery Cross-Reference

Silver oxide, lithium 3V and rechargeable solar capacitors. Search any local or international code — Renata, Sony, Maxell, Energizer, Varta, Duracell or AG.

IEC	Renata	Sony	Maxell	Energizer	Varta	Duracell	AG	LR	Ø mm	H mm	V	Chemistry
SR920SW	371	SR920SW	SR920SW	371	V371	D371	AG6	LR920	9.5	2.05	1.55V	Silver Oxide
SR920W	370	SR920W	SR920W	370	V370	D370	AG6	LR920	9.5	2.05	1.55V	Silver Oxide High Drain
SR626SW	377	SR626SW	SR626SW	377	V377	D377	AG4	LR626	6.8	2.6	1.55V	Silver Oxide
SR626W	376	SR626W	SR626W	376	V376	D376	AG4	LR626	6.8	2.6	1.55V	Silver Oxide High Drain
SR621SW	364	SR621SW	SR621SW	364	V364	D364	AG1	LR621	6.8	2.15	1.55V	Silver Oxide
SR621W	363	SR621W	SR621W	363	V363	D363	AG1	LR621	6.8	2.15	1.55V	Silver Oxide High Drain
SR927SW	395	SR927SW	SR927SW	395	V395	D395	AG7	LR927	9.5	2.7	1.55V	Silver Oxide
SR927W	399	SR927W	SR927W	399	V399	D399	AG7	LR927	9.5	2.7	1.55V	Silver Oxide High Drain
SR936SW	394	SR936SW	SR936SW	394	V394	D394	AG9	LR936	9.5	3.6	1.55V	Silver Oxide
SR721SW	362	SR721SW	SR721SW	362	V362	D362	AG11	LR721	7.9	2.1	1.55V	Silver Oxide
SR721W	361	SR721W	SR721W	361	V361	D361	AG11	LR721	7.9	2.1	1.55V	Silver Oxide High Drain
SR726SW	397	SR726SW	SR726SW	397	V397	D397	AG2	LR726	7.9	2.6	1.55V	Silver Oxide
SR726W	396	SR726W	SR726W	396	V396	D396	AG2	LR726	7.9	2.6	1.55V	Silver Oxide High Drain
SR41SW	384	SR41SW	SR41SW	384	V384	D384	AG3	LR41	7.9	3.6	1.55V	Silver Oxide
SR41W	392	SR41W	SR41W	392	V392	D392	AG3	LR41	7.9	3.6	1.55V	Silver Oxide High Drain
SR1120SW	381	SR1120SW	SR1120SW	381	V381	D381	AG8	LR1120	11.6	2.05	1.55V	Silver Oxide
SR1120W	391	SR1120W	SR1120W	391	V391	D391	AG8	LR1120	11.6	2.05	1.55V	Silver Oxide High Drain
SR1130SW	390	SR1130SW	SR1130SW	390	V390	D390	AG10	LR1130	11.6	3.05	1.55V	Silver Oxide
SR1130W	389	SR1130W	SR1130W	389	V389	D389	AG10	LR1130	11.6	3.05	1.55V	Silver Oxide High Drain
SR43W	386	SR43W	SR43W	386	V386	D386	AG12	LR43	11.6	4.2	1.55V	Silver Oxide
SR43SW	301	SR43SW	SR43SW	301	V301	D301	AG12	LR43	11.6	4.2	1.55V	Silver Oxide Low Drain
SR44W	357	SR44W	SR44W	357	V357	D357	AG13	LR44	11.6	5.4	1.55V	Silver Oxide
SR44SW	303	SR44SW	SR44SW	303	V303	D303	AG13	LR44	11.6	5.4	1.55V	Silver Oxide Low Drain
SR916SW	373	SR916SW	SR916SW	373	V373	D373	—	—	9.5	1.65	1.55V	Silver Oxide
SR616SW	321	SR616SW	SR616SW	321	V321	D321	—	—	6.8	1.65	1.55V	Silver Oxide
SR516SW	317	SR516SW	SR516SW	317	V317	D317	—	—	5.8	1.65	1.55V	Silver Oxide
SR521SW	379	SR521SW	SR521SW	379	V379	D379	—	LR521	5.8	2.15	1.55V	Silver Oxide
SR416SW	337	SR416SW	SR416SW	337	V337	—	—	—	4.8	1.65	1.55V	Silver Oxide
SR716SW	315	SR716SW	SR716SW	315	V315	D315	—	—	7.9	1.68	1.55V	Silver Oxide

Tech Tip: How to read Lithium battery sizes

For coin cells like CR2016, the first two digits are the diameter in millimeters (20 mm), and the last two indicate thickness (1.6 mm). So a CR2025 is 2.5 mm thick, and a CR2032 is 3.2 mm thick.

Watch Battery Equivalents and Cross References

This tool helps identify equivalent watch batteries across major manufacturers including Renata, Sony, Maxell, Energizer, Varta and Duracell.

Frequently Asked Questions

What is the equivalent of AG7 battery?

AG7 is commonly equivalent to SR927SW, 395, V395 and D395 depending on manufacturer.

What is the equivalent of LR44 battery?

LR44 batteries are commonly sold under equivalent codes such as A76, AG13 and V13GA.

How do I find a watch battery replacement?

Enter the battery code into the Watch Battery Cross-Reference tool to find compatible replacements.

Guide · Chemistry

Silver Oxide vs Alkaline: Why Cheap Batteries Damage Watches

In European supermarkets, you often see multi-battery blister packs labeled as AG4, AG12, or LR44 selling for just a couple of euros. Meanwhile, having a single SR626SW or Renata 377 battery replaced at a professional watchmaker's shop can cost €10 to €15. Why is there such a massive price gap, and why is cutting corners here dangerous for your timepiece?

1. Voltage Stability (Precision)

Silver Oxide Cells (SR / Renata / Maxell): These elements maintain a highly stable output of 1.55 V throughout 95% of their entire lifespan.
Alkaline Cells (AG or LR markings): These start at 1.50 V, but their discharge curve is a continuous downward slope.

2. The Risk of Movement Destruction (Electrolyte Leakage)

Alkaline batteries (LR) utilize liquid potassium hydroxide as an electrolyte. As the cell discharges, internal pressure builds up. The leakage instantly corrodes the ultra-thin copper coil of the quartz movement.

Locator.watch Verdict: For any wristwatches, use silver-oxide elements exclusively. Always look for the "SR" prefix on the battery code.

Guide · Solar & Kinetic

Solar & Kinetic Rechargeable Cells Guide (Citizen Eco-Drive & Casio Tough Solar)

Solar-powered timepieces (Citizen Eco-Drive, Casio Tough Solar, Seiko Solar) or those powered by kinetic movement (Seiko Kinetic) contain a lithium-titanium rechargeable battery, not a standard watch battery.

The Golden Rule: Never Insert a Standard Battery into a Solar or Kinetic Watch

If you insert a standard silver-oxide SR920SW into a Citizen Eco-Drive just because it matches the size of the CTL920, the solar panel will continuously send charging current to a cell that cannot accept it, causing rupture.

Use the Locator.watch map to find a certified Solar & Kinetic specialist in your area.

Looking up a specific watch?

Browse our battery guide organized by watch model — Casio, Seiko, Citizen, Fossil, Tissot and more.

Watch Battery by Model

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