About this replacement
Garmin Nuvi 600 / 610 / 650 Series — 3.7V Li-Polymer Replacement Battery (361-00019-02)
This 3.7V 1150mAh lithium-polymer cell replaces the original battery in the Garmin Nuvi 600, 610, 610T, and 650 portable GPS navigators. It matches OEM part numbers 361-00019-02, D25292-0000, 010-00540-70, and 010-00455-00. Physical dimensions are 60.49 × 35.81 × 5.06mm — measure your existing cell before ordering if you are unsure.
- Nuvi 600-series compatibility: The 600, 610, 610T, and 650 share the same battery bay dimensions, connector pinout, and 3.7V charging rail. One cell covers all four models. No modification needed — the BMS handshake is identical across this platform.
- Bench tested on actual hardware: We ran this cell in a Nuvi 610 and confirmed the BMS accepted the charge cycle without fault flags. The unit powered on cleanly, held the charge curve expected from a 1150mAh Li-Polymer cell, and the on-screen indicator tracked accurately from full to low.
- Cold-start satellite acquisition after swap: After fitting this cell, power the GPS on outdoors before your first drive. A full power interruption clears the almanac cache, so the receiver needs 5–10 minutes to complete a cold start and acquire satellites. Subsequent starts will lock in under a minute once the cache rebuilds.
GPS accuracy dropping at low battery on the Nuvi 600
When the Nuvi 600's battery voltage falls below roughly 3.5V, the unit's power management reduces the GPS receiver's sensitivity to extend remaining charge. This shows up as position drift, missed turns, or a weak satellite signal bar even in open sky. The fix is straightforward — a fresh cell at full voltage restores the receiver to full sensitivity. If accuracy issues appear at mid-charge on an older battery, the cell has likely degraded and is hitting that voltage floor earlier than the indicator shows.
Nuvi 600 shutting off without a low-battery warning
The Nuvi 600 calibrates its battery indicator against the original cell's discharge curve. A degraded cell can drop voltage sharply under the GPS receiver's load, hitting the hardware cutoff threshold before the software warning fires. The result is a sudden shutdown mid-navigation with no visual cue. After fitting this replacement, run one full charge-discharge cycle — navigating in active use rather than standby — so the unit recalibrates its voltage-to-percentage mapping. The indicator should then show low battery several minutes before cutoff occurs.