Mag Instrument (Maglite) · Flashlights
Mini Maglite AAA LED battery
2 × 1.5V alkaline cell
Short answer: two AAA alkaline cells. Unscrew the tail cap, replace both together with positive toward the lamp, and tighten. Solitaire uses only one AAA — confirm your model length before buying.
How to replace it
| Compartment | Tail cap |
|---|---|
| How to open | Unscrew the tail cap counterclockwise; remove both AAA cells; install two fresh AAA alkaline cells; reinstall and tighten. |
| Orientation | Positive (+) end toward the lamp/head |
| Access | Tool-free |
Important
- Not Solitaire (1× AAA) and not Mini Maglite AA (2× AA).
- Maglite FAQs: alkaline-optimized; NiMH may reduce output/runtime.
Sources
Need a AAA?
Mag Instrument (Maglite) Mini Maglite AAA LED uses 2 × AAA.
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
- Digital multimeter
Measure open-circuit voltage and general electronics checks
New battery but still not working?
A fresh 2 × AAA should restore Mag Instrument (Maglite) Mini Maglite AAA LED if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Positive (+) end toward the lamp/head
- Check the battery type
This device needs 2 × AAA (alkaline). Same size does not always mean the same battery.
3 more checks
- Check known model-specific issues
Not Solitaire (1× AAA) and not Mini Maglite AA (2× AA). Maglite FAQs: alkaline-optimized; NiMH may reduce output/runtime.
- 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.