Garmin Edge 605 / 705 Battery Guide: Diagnose Power Loss Before Your Next Ride
Your Edge 605 or 705 still records the rides you care about, but its charge no longer lasts. Before replacing the whole computer—or ordering a battery—record when it loses power and protect the information you want to keep.
This article concerns Garmin Edge 605 and Edge 705. It is a repair-planning guide, not an interchangeable teardown for every Garmin cycling computer.
Replacement listing: STARNOVO Edge 605 / 705 battery — 361-00019-12, listed at 3.7V 1250mAh. Have the original pack and exact device verified before ordering.
Describe the failure before selecting a part
It works on external power but stops soon after disconnection: Record the charging behavior and time to shutdown. Battery deterioration is one possible explanation, but the charging and internal power circuits also require consideration.
It restarts while still connected: Inspect the external cable and connector for visible damage and report whether cable movement reproduces the fault. A new pack is not a guaranteed repair for a loose connection.
It stays on but navigation behaves incorrectly: Routing, position and map problems need separate investigation. Garmin maintains Edge 605/705 routing support; a navigation complaint alone does not establish a battery fault.
Do not borrow controls from a newer Edge
Use the Edge 605/705 documentation for charging, normal controls and any recovery procedure. Garmin provides an Edge 705 manuals page as a starting point.
A reset sequence found for an Edge 20/25, 800 or a current-generation computer is not evidence that the same sequence is appropriate here. Understand the effect on data and settings before performing any reset.
Garmin's Edge 605/705 firmware page also warns that its updates are specific to the stated units and versions. Do not use unrelated firmware as a battery troubleshooting experiment.
Preserve ride information before internal work
If the unit operates safely, transfer important activity files using the supported method for your setup and verify that the copied information is accessible. Record routes and settings that matter to your riding routine.
Do not assume one file copy preserves every personal setting, map item or authorization. Tell the repair provider what remains only on the device, and avoid formatting it as a routine first response to shortened runtime.
Compare the entire 361-00019-12 replacement
The STARNOVO listing provides these replacement details:
- Listed applications: Garmin Edge 605 and Edge 705
- Listed battery reference: 361-00019-12
- Nominal voltage: 3.7V
- Rated replacement capacity: 1250mAh
- Listed dimensions: 5.5 × 37.5 × 61.0 mm
- Package contents: One replacement battery
These figures describe the offered replacement, not independently verified factory-pack specifications for every revision. This is a third-party STARNOVO product, not an original Garmin battery.
A qualified provider should compare the original label, complete pack size, connector or connection arrangement, contact functions, polarity and lead routing. Do not infer fit from voltage or capacity alone. This listing should not be extended to Edge 305, 800, 810 or another series because the devices look related.
Assess the enclosure as well as the cell
Internal service should use a procedure appropriate to the exact unit. This guide does not establish a verified screw count, display-cable layout or shared battery-removal method. Ask the provider to assess the charging connector, enclosure condition and any sealing components before recommending the repair.
Do not pry against the display, bend a pack, improvise wiring or force the case closed. Stop using and charging a unit with swelling, leakage, unusual heat, odor or housing separation. A closed case is not proof that original weather protection has been restored.
Use a short shakedown outing before a long ride
After service, check charging and independent operation, display and buttons, saving an activity and transferring it afterward. Verify any normally used sensors and navigation functions appropriate to the exact model.
Begin with a controlled outing rather than discovering a remaining fault during an event. Compare runtime using similar backlight and recording settings; the 1250mAh rating does not guarantee a fixed number of riding hours.
A battery replacement may address lost capacity, but it does not update maps, recover previously lost files or repair every intermittent electronics problem.
For fit questions, email sales@starnovo.com with the full device model and original battery details supplied by your provider. Do not open the computer solely to obtain a battery photograph.