iMac (24-inch, M1, 2021, Four ports) Battery Board and Batteries
WARNING
![](https://cdsassets.apple.com/live/SZLF0YNV/service-documentation/ssr/mac-mini-m1-2020/100339-battery/Coin_Cell_Warning.png)
INGESTION HAZARD: This product contains a button cell or coin battery.
DEATH or serious injury can occur if ingested.
A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours.
KEEP new and used batteries OUT OF REACH OF CHILDREN.
Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
Before You Begin
Remove the following part before you begin:
Tools
ESD-safe tweezers
Ethanol wipes or isopropyl alcohol (IPA) wipes
Nylon probe (black stick)
Support wedges
![](https://cdsassets.apple.com/live/SZLF0YNV/service-documentation/ssr/imac-24-m1-2021-4-ports-j456/100690-battery-board/000_RP1725_Locator_V3.jpg)
Important
This model requires two CR2016 batteries. Replacement batteries can be purchased from electronics supply retailers.
Removal
Position the housing with the back facedown and the top closest to you.
Position the pointed end of the black stick underneath the battery cable and close to the connector. Hold the battery cable in place against the black stick and lift the end of the battery cable off the connector.
Use ESD-safe tweezers to grasp the battery adhesive tab and gently peel it from the battery board.
Use ESD-safe tweezers to grasp the battery adhesive tab. Keep the tweezers close and parallel to the housing. Then slowly twist the tweezers to wrap the adhesive around them.
Caution: Don’t pull the battery adhesive strip upward.
Pull the tweezers outward as shown. As the battery adhesive strip stretches, continue to slowly pull and twist the tweezers until you have removed the entire strip.
Note: Hold the battery board in place as it loosens.
- Caution: If the battery adhesive strip breaks and can’t be retrieved, don’t forcibly pry the battery board. Stop the repair and reassemble the computer. For service, visit
Remove the battery board from the housing and place it on an ESD-safe surface.
Turn over the battery board. Peel off any remaining adhesive. Use an ethanol wipe or IPA wipe to clean any adhesive residue from the back of the battery board.
Use the black stick to gently push the batteries outward to remove the batteries from the battery board.
Reassembly
Warning
Install only a CR2016 battery. There is a risk of explosion if the battery is installed incorrectly or replaced with an incorrect type of battery. Dispose of used batteries according to local environmental laws and guidelines.
If you removed the batteries or are installing new batteries, slide the batteries positive (+) side up into the battery compartments on the battery board.
If you reinstall the same battery board, apply a new adhesive strip to the back of the battery board as shown. Fold down the adhesive tab between the batteries (1).
Peel the large blue release liner from the back of the battery board to expose the battery board adhesive.
Align the top edge of the battery board with the cutout in the housing. Then lay down the battery board.
Press and hold the battery board for 15 seconds in the areas shown in blue to adhere it to the housing.
Caution: Don’t press on the battery compartments.
Press the end of the battery cable to the connector.
Reinstall the following part to complete reassembly: