Garmin Nuvi 2555LMT Replacement Battery 3.7V 1000mAh

Garmin Nuvi 2555LMT Series — 3.7V Li-ion Replacement Battery (361-00035-03)

This is a 3.7V, 1000mAh Li-ion cell replacing OEM part 361-00035-03 and 361-00035-07. It fits the Garmin Nuvi 2555LMT, 2555LT, 2495LMT, 2475LT, and 24 additional Nuvi models in this family. Swap it in when the original cell no longer holds a charge long enough to complete a navigation session away from the car charger.

• Nuvi 2555 family compatibility: These models share a common 3.7V single-cell architecture, the same physical footprint (53.36 × 34.18 × 5.38mm), and identical flex-ribbon connector. The BMS handshake is passive on this platform — no proprietary authentication challenge to clear.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Nuvi platform. The BMS held stable voltage delivery across the full state-of-charge curve, with no false low-battery triggers during active navigation mode.
• Cold-start satellite acquisition after swap: After fitting this cell and powering on, take the unit outdoors before first use. The GPS performs a full cold start after any complete power interruption — expect 5 to 10 minutes for initial satellite fix. Subsequent warm starts return to under a minute.

GPS accuracy reduced at low battery on the Nuvi 2555LMT

When cell voltage drops toward 3.4V, the Nuvi 2555LMT can reduce GPS receiver sensitivity to protect remaining charge. This shows up as position drift or a sluggish map cursor even on roads with clear sky view. It is not a software glitch or antenna fault — it is a deliberate power-saving response at low voltage. Keep the cell above 3.6V during active navigation to maintain full receiver sensitivity.

Nuvi 2555LMT shuts off without a low-battery warning

This happens when a degraded original cell's actual voltage-versus-capacity curve no longer matches the calibration the device was shipped with. The fuel gauge reads 20% while the cell is already near cutoff voltage, so the visual warning never appears before shutdown. A fresh cell restores the match between actual capacity and the on-screen indicator. After fitting this battery, run two full charge-to-discharge cycles so the device recalibrates its cutoff threshold correctly.