LiftMaster · Garage remotes
LiftMaster 890MAX battery
1 × 3V lithium coin cell
LiftMaster 890MAX uses 1× CR2032. Same instruction family as 893MAX; 895MAX is CR2016.
How to replace it
| How to open | Open the case as shown on the instruction sheet. Insert coin cell positive side up (+). |
|---|---|
| Orientation | Positive (+) side up |
| Low battery indicator | LED(s) stop flashing when battery is low |
| Notes | Same instruction family as 893MAX/895MAX — confirm model: 890MAX/893MAX use CR2032; 895MAX uses CR2016. |
| Access | Tool-free |
Important
- Identify by remote model (890MAX) on the transmitter — not by garage door opener model.
- Do not use CR2016 (that is 895MAX).
Sources
Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
- Coin cell / button cell battery tester
Quick check of CR / LR / SR button and coin cells before fitting
- Fluke 101 Digital Multimeter
Accurate open-circuit voltage and basic electrical checks
- Digital multimeter
Measure open-circuit voltage and general electronics checks
New battery but still not working?
A fresh 1 × CR2032 should restore LiftMaster 890MAX if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Positive (+) side up
- Check the battery type
This device needs 1 × CR2032 (lithium). Rechargeable cells are not supported for this device. Same size does not always mean the same battery.
- Check known model-specific issues
Identify by remote model (890MAX) on the transmitter — not by garage door opener model. Do not use CR2016 (that is 895MAX).
- Confirm the battery itself
For most coin cells, fitting a known-good fresh cell of the correct code is simpler than capacity testing.
- Still not responding?
If a correct, fresh battery installed properly does not restore the device, the fault may be elsewhere — the device may need service or replacement.