How to Choose the Right Batteries for Your Quartz Watches (Equivalents, Brands, Lifespan)

First and foremost, I’m a lover of mechanical watches—but I’m not dogmatic: I also have my own little collection of quartz watches. And when it comes to changing the battery, you’re better off knowing what you’re doing. Here’s a practical guide to understanding battery types, their equivalents, recommended brands and, above all, how to maximise the battery life of your quartz watches.

Why choosing the right watch battery matters

Quartz watches use small button cells—often overlooked, yet crucial. Choosing the wrong battery (wrong chemistry, wrong voltage, an obscure brand) can lead to malfunctions, shortened battery life, or even leaks that can irreparably damage the movement.

The key: correctly identify the right battery type and choose a trusted brand.

Watch battery types: alkaline, silver oxide, lithium

• Alkaline (1.5V): a common format (AG13, LR44…), low cost, but voltage drops over time and battery life is average.
• Silver oxide (1.55V): more stable voltage, longer life, ideal for quality watches or sensitive movements.
• Lithium (3V): used in higher-consumption or multifunction watches (chronographs, alarms, etc.).

How long does a watch battery last?

• Alkaline: 1 to 2 years in standard use.
• Silver oxide: up to 3 years with stable voltage.
• Lithium: 5 to 10 years depending on which functions are used.

Store new batteries at room temperature and replace them as soon as a watch stops, to avoid any leakage.

Battery brands used by watchmakers

• Renata: the Swiss standard, used in professional watchmaking.
• Varta: a reliable German brand, widely used in workshops.
• Maxell, Energizer, GP: well-known brands, reliable if purchased from reputable sellers.

Watch battery equivalence chart

Practical tips for changing your battery

• Use the right tool to open the caseback without damaging it.
• Clearly identify the battery you need to replace before buying.
• Don’t touch the internal contacts with your fingers (risk of oxidation).
• Refit the caseback properly (snap-on or screw-down) and check water resistance if the watch was water-resistant.
• Used batteries must be recycled at a civic amenity site or a designated collection point.

My personal take

I’m not going to lie to you: I prefer mechanical watches. But in my quartz collection, I’ve seen the difference between a bargain-basement battery bought in a hurry and a good Renata.

And honestly, paying €2 more for a battery isn’t exactly the end of the world if it helps you avoid wrecking a movement…

FAQ – Frequently asked questions about watch batteries

Can you replace an AG13 with an LR44?

Yes—these are equivalent in size and voltage (1.5V). However, it’s recommended to choose a silver-oxide version (for example SR44 or 357) for better stability and longer battery life.

What is the best watch battery brand?

Renata (Swiss-made) is widely recognised for its reliability. Varta, Maxell, Energizer and GP are also good brands, provided they come from reputable retailers.

Can a watch battery leak?

Yes—especially if it’s an alkaline battery of poor quality. A depleted battery left in a watch for too long can leak and damage the movement. Silver-oxide batteries present fewer risks.

How long does a watch battery last?

An alkaline battery lasts on average 1 to 2 years. A silver-oxide battery can last up to 3 years. Lithium (3V) batteries can exceed 5 to 10 years depending on how the watch is used.

Should I have the battery changed by a watchmaker?

It’s not mandatory, but it’s advisable if the watch is water-resistant, valuable, or if you don’t have the right tools. The watchmaker can also check the condition of the gasket and the water resistance after replacement.

Recommended sources:

• bestpiles.fr – Equivalence guide
• mega-piles.com – French specialist in watch batteries
• Wikipedia (EN) – Technical overview
• Official Maxell chart