TIANQIUApple Watch Battery
Apple Watch Battery — Built In, Not Replaceable
An Apple Watch has a sealed, built-in rechargeable battery — there is no coin cell to replace (battery service is handled by Apple). The Apple product that does take a user-replaceable CR2032 is the AirTag; older Macs also use a CR2032 for CMOS / PRAM. We supply the correct watch battery factory direct, with custom label & bulk for watch brands.
An Apple Watch has a sealed, built-in rechargeable battery — there is no coin cell to replace (battery service is handled by Apple). The Apple product that does take a user-replaceable CR2032 is the AirTag; older Macs also use a CR2032 for CMOS / PRAM.
Battery Type
The coin cell Apple products do use: CR2032
Not replaceable: an Apple Watch battery is sealed inside the case and serviced by Apple — do not try to pry it open. The user-replaceable CR2032 below is the cell used in the Apple AirTag and in older Macs (CMOS / PRAM).
CR2032 Specifications
| Model | CR2032 |
|---|---|
| Chemistry | Lithium |
| Voltage | 3.0V |
| Diameter | 20mm |
| Thickness | 3.2mm |
| Capacity | 190mAh ~ 255mAh |
| Equivalent to | CR2032 = 5004LC = ECR2032 = KCR2032 = DL2032 |
Equivalent to CR2032 = 5004LC = ECR2032 = KCR2032 = DL2032. See the full cross-reference table. A 3V lithium coin cell used in feature/smart watches and larger devices.
Capacity: 190mAh ~ 255mAh · Thickness: 3.2mm.
How-To
How to Replace a Apple Watch Battery
- Open the watch case back with a watch-back tool or flat screwdriver
- Note the battery size and which side faces up
- Remove the old CR2032 cell with non-metallic tweezers
- Insert a fresh CR2032 battery with the correct polarity
- Re-seal the case and set the time
Match the exact size and voltage. A wrong-thickness cell can jam the case back or power the watch incorrectly.
Watch Batteries
Which other watch battery models are there?
Guide
How to Replace a Watch Battery (Tools, Sizes and Steps)A watch battery change needs the right cell, a case-back tool and a clean bench. Step-by-step, plus the watch cell sizes we make.
FAQ
What do buyers ask about Apple watch batteries?
What battery does a Apple watch use?
An Apple Watch has a built-in rechargeable lithium-ion battery — there is no coin cell inside and the battery is not user-replaceable (Apple provides battery service). The user-replaceable CR2032 is the cell inside the Apple AirTag; older Macs also use a CR2032 for CMOS / PRAM.
How do I replace a Apple watch battery?
You cannot open an Apple Watch to change its battery — Apple provides battery service for these models. If you need the CR2032 for an AirTag, press down and twist the stainless-steel back cover anticlockwise, lift the cover and swap the CR2032 with the + side up.
Is the CR2032 battery rechargeable?
No — the standard CR2032 is a primary (non-rechargeable) Lithium cell. Replace it rather than recharge.
How do I check which watch battery size I need?
Read the marking on the old cell first — it is printed on the face or the rim (for a Apple that is usually CR2032, also written 5004LC). If the print has worn off, measure the old cell: diameter and thickness together identify the model. A CR2032 is 20mm across and 3.2mm thick.
What do the numbers on a watch battery mean?
The IEC type number encodes the size, not the brand. In SR626SW the code gives a 20mm diameter and 3.2mm thickness at 3.0V. Trade numbers point at the same cell — CR2032 = 5004LC = ECR2032 = KCR2032 = DL2032 — so any of those markings is a direct replacement for the other.
Does it matter which watch battery brand I buy?
Fit is set by the model number, not the brand: any cell matching the size and voltage fits the holder. What does vary is the capacity and the consistency of the discharge curve, which is why we publish 190mAh ~ 255mAh for the cell we supply and can send the discharge data with a quote.
How do I buy CR2032 watch batteries in bulk?
Factory-direct CR2032 cells with OEM custom label. Get a quote today.