Remotes & audio
LG Magic Remote AN-MR21GA battery
2 × 1.5V alkaline cell
How to replace it
| How to open | Open the battery cover on the Magic Remote. Insert two AA batteries matching the polarity marks. Close the cover. |
|---|---|
| Orientation | Match polarity marks in the compartment |
| Re-pair after change | Yes |
| Notes | LG US Magic Remote MR21GA PDF: uses two AA batteries. Pairing/pointer behaviour is separate from the cell type — follow LG’s remote pairing steps for your TV year if needed after a battery change. |
| Access | Tool-free |
Important
- 2× AA — not AAA. Later Magic Remotes (e.g. AN-MR22GA) are the same AA family unless LG documents otherwise.
- TV model alone is not enough — confirm the remote part number on the back (AN-MR…).
Sources
Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
- Ansmann Energy Check LCD
Quick household cell check (good / low / replace)
- ZTS Mini-MBT Multi-Battery Tester
More informative state-of-charge style checks across common formats
- Battery tester
Quick good / low / dead check for household cells
New battery but still not working?
A fresh 2 × AA should restore LG Magic Remote AN-MR21GA if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Match polarity marks in the compartment
- Check the battery type
This device needs 2 × AA (alkaline). Supported chemistry: alkaline. Same size does not always mean the same battery.
- Check known model-specific issues
Re-pairing or a short reset may be required after a battery change. 2× AA — not AAA. Later Magic Remotes (e.g. AN-MR22GA) are the same AA family unless LG documents otherwise. TV model alone is not enough — confirm the remote part number on the back (AN-MR…).
- Confirm the battery itself
If you have a battery tester or multimeter, check the cell. A low open-circuit voltage often means replace; for rechargeable AA/AAA, a capacity test is more informative than voltage alone.
- 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.