Product Information
The LiftMaster 10A20 is a 3V CR2032 lithium coin cell battery for many LiftMaster remote controls and accessories. It is commonly used in 300 series and 900 series remote-control families where the remote battery compartment specifies CR2032. This is a battery replacement item only; it does not affect the remote's coding, frequency, or receiver compatibility.
Compatibility and Application
The 10A20 is commonly used with many LiftMaster 300 series and 900 series remotes, including 371LM, 372LM, 373LM, 971LM, 973LM, 891LM, 893LM, 893MAX, and 956EV when those remotes specify CR2032.
Use Notes
- Restores battery power to compatible LiftMaster remote controls.
- Does not reprogram the remote or change opener compatibility.
- CR2032 size should not be confused with CR2016 or other coin cells.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Remote Control Battery |
| Part Number | 10A20 |
| Related Part Number | K010A0020 / 010A0020 |
| Battery Type | CR2032 lithium coin cell |
| Voltage | 3V |
| Application | Select LiftMaster remote controls and accessories |
| Common Remote Families | 300 series and 900 series remotes where CR2032 is specified |
| Notes | Confirm battery size inside the remote before ordering |
Also Known As / Related Part Numbers
- 10A20
- K010A0020
- 010A0020
- CR2032
- 3V lithium battery
- LiftMaster remote battery
Technician Note
A weak battery can reduce remote range, but it is not the only cause. Dirty contacts, a worn button pad, receiver antenna issues, or mismatched receiver technology can also make a remote unreliable.
Before Ordering
- Open the remote and confirm it calls for a CR2032 battery.
- Check polarity before removing the old battery.
- Clean or inspect battery contacts if the old battery leaked.
- Confirm the remote model if ordering batteries for several different remote styles.
Professional Advisory
Coin batteries should be kept away from children and disposed of properly. If a remote is cracked, wet, corroded, or intermittently activating the opener, replace or professionally diagnose the remote system.
Product Q&A
What battery size is LiftMaster 10A20?
LiftMaster 10A20 is a 3V CR2032 lithium coin cell battery used in many LiftMaster remote controls and accessories.
Which LiftMaster remotes commonly use 10A20?
It is commonly used with many 300 series and 900 series remote controls, including models such as 371LM, 372LM, 373LM, 971LM, 973LM, 891LM, 893LM, 893MAX, and 956EV where the remote calls for CR2032.
What does replacing the 10A20 battery do?
It restores battery power to a compatible remote control, but it does not change the remote programming, frequency, or opener compatibility.
Can a CR2016 replace a CR2032?
No. CR2016 and CR2032 batteries are not the same thickness. Use the battery size printed inside the remote battery compartment.
Will the remote need to be reprogrammed after battery replacement?
Usually no. Replacing the battery normally does not erase programming, but the remote may need diagnosis if it still does not work after a fresh battery is installed correctly.
