Garmin · Handheld GPS
Garmin Montana 700 battery
3 × 1.5V alkaline cell
This device uses more than one power source. Only the user-replaceable cell(s) listed below can be changed.
How to replace it
| How to open | Device ships with rechargeable Li-ion pack. For AA backup: remove Li-ion pack via D-ring; load optional AA pack with three AA cells observing polarity; insert AA pack; set Setup > System > Battery Type. |
|---|---|
| Orientation | Observe polarity in AA pack |
| Notes | Optional AA battery pack not included. Lithium AA recommended. AA pack is NOT compatible with Montana 700i/710i/750i/760i. |
| Access | Tool-free |
Important
- Mixed power: included Garmin Li-ion pack OR optional 3× AA pack (not included).
- Accepted AA chemistries: alkaline, NiMH, or lithium — lithium recommended.
- Sibling Montana 700i family is Li-ion only — no AA pack.
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 3 × AA should restore Garmin Montana 700 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 in AA pack
- Check the battery type
This device needs 3 × AA (alkaline). Supported chemistry: alkaline, NiMH. 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
Mixed power: included Garmin Li-ion pack OR optional 3× AA pack (not included). Accepted AA chemistries: alkaline, NiMH, or lithium — lithium recommended. Sibling Montana 700i family is Li-ion only — no AA pack.
- 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.
Current model
If this model is finished, the Manufacturer successor model is Garmin Montana 710.