Start with the exact watch reference
Look up the manufacturer's instructions or movement documentation before ordering a battery. The model or movement number is more reliable than guessing from watch size.
Silver-oxide watch cells
Many analog quartz watches use silver-oxide button cells. Familiar codes include 377 and 364, but these are not universal substitutes for one another. Match the specified chemistry, dimensions and electrical characteristics.
Lithium coin cells
Some watches and digital modules use lithium cells such as the CR series. Never substitute a lithium coin cell for a silver-oxide watch cell solely because it appears to fit.
Rechargeable and solar-powered watches
Solar-powered watches and some specialized quartz watches may use rechargeable energy-storage cells. Substituting a disposable battery can damage the circuit or create safety problems.
Why professional replacement can be worthwhile
Watchmakers can identify the proper cell, inspect contacts and gaskets, reseal the case and assess water resistance. Watch battery replacement should not be treated as a universal DIY task.
Safe handling and disposal
Keep button and coin cells away from children and pets; swallowed cells can cause severe internal injury. Avoid short-circuiting or puncturing cells and follow local battery-recycling guidance.
Frequently asked questions
Are watch batteries 377 and 364 the same?
No. They differ in physical specifications and intended applications; use the exact type specified for the movement.
Will replacing a battery restore water resistance?
Not by itself. Gasket integrity and testing may be required.
Can I replace a solar watch's cell with an ordinary battery?
No. Rechargeable systems must use the correct manufacturer-specified energy-storage component.
More watch knowledge
Read our beginner watch tools guide, Watchmaker's Bench, and watch terminology glossary. If you're choosing your next timepiece, shop Harbor2Arbor watches.