Garmin · Handheld GPS
Garmin eTrex SE battery
2 × 1.5V alkaline cell
How to replace it
| How to open | Turn D-ring counter-clockwise and pull up to remove cover. Insert two AA batteries observing polarity. Replace cover; turn D-ring clockwise. |
|---|---|
| Orientation | Observe polarity marks |
| Notes | Settings > System > Battery Type — select matching chemistry. Sibling eTrex Solar is sealed Li-ion (not AA). |
| Access | Tool-free |
Important
- Accepted chemistries: alkaline, NiMH, or lithium AA (1.5 V).
- Do not confuse with eTrex Solar (built-in rechargeable Li-ion).
Sources
Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
- Panasonic eneloop AA (LSD NiMH)
Replacement AA cells when the device accepts NiMH
- PowerEx MH-C9000 WizardOne Charger-Analyzer
Charge, discharge and measure capacity of NiMH AA/AAA
- Battery tester
Quick good / low / dead check for household cells
New battery but still not working?
A fresh 2 × AA should restore Garmin eTrex SE if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Observe polarity marks
- Check the battery type
This device needs 2 × AA (alkaline). Supported chemistry: alkaline, NiMH, lithium_primary. Rechargeable cells are only suitable when the manufacturer accepts that chemistry — set battery type in device settings if available. Same size does not always mean the same battery.
- Check known model-specific issues
Accepted chemistries: alkaline, NiMH, or lithium AA (1.5 V). Do not confuse with eTrex Solar (built-in rechargeable Li-ion).
- 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.