Magellan RoadMate 2000 Replacement Battery 3.7V 1700mAh

Magellan RoadMate 2000 / 2200T / 2250T — 3.7V Li-ion Replacement Battery (37-00030-001)

This 3.7V, 1700mAh Li-ion cell replaces the original battery in the Magellan RoadMate 2000, RoadMate 2200T, and RoadMate 2250T portable GPS navigators. It matches the OEM part numbers 37-00030-001, E4MT181202B12, and 027100SV8. Fit this battery when the original no longer holds charge or the unit dies before reaching your destination.

• RoadMate 2000 / 2200T / 2250T platform: All three models share the same battery bay dimensions, connector pinout, and voltage rail. The BMS communicates over the same two-wire interface, so there is no handshake mismatch on any of the three units.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on RoadMate 2000 hardware. The BMS accepted the cell without fault codes, and charge termination triggered correctly at 4.2V. Discharge cutoff engaged at the expected low-voltage threshold without premature shutdown.
• Cold-start satellite acquisition after fitting: After fitting this cell and powering on for the first time, take the unit outdoors in open sky before use. The GPS performs a full cold start after a complete power interruption — first satellite fix typically takes 5 to 10 minutes. Subsequent power cycles warm-start and lock in under a minute.

RoadMate shutting off without warning at low battery

The RoadMate 2000 series uses a fuel-gauge circuit calibrated to the original cell's discharge curve. After a battery swap, that calibration is off. The unit may display two or three bars of charge, then cut off abruptly because the actual cell voltage has already dropped below the BMS cutoff threshold — roughly 3.0V — while the indicator still reads mid-range. To recalibrate, run the new battery down until the unit shuts itself off, then charge it uninterrupted to full. One full cycle is usually enough to sync the gauge.

Saved routes and POIs missing after battery replacement

The RoadMate stores certain user data — saved destinations, recent routes, and some POI categories — in battery-backed RAM. When the battery is fully removed, that RAM loses power and those records are cleared. Map data stored on internal flash is unaffected. Before pulling the old battery, export any saved locations to the included SD card or note them manually. After fitting the new cell and powering on, re-enter saved destinations through the device's address book menu.