About this replacement
Magellan RoadMate 6000 Series — 3.7V Li-ion Replacement Battery (541380471002)
This 3.7V 2200mAh (8.14Wh) Li-ion cell replaces the original battery in the Magellan RoadMate 6000 and RoadMate 6000T portable GPS navigators. It matches the OEM part number 541380471002 and fits the factory battery compartment directly. Voltage and capacity match the original spec.
- RoadMate 6000 and 6000T compatibility: Both models share the same battery bay geometry, connector pinout, and 3.7V supply rail. The BMS handshake is identical across the two variants, so one cell covers both units.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the RoadMate platform. The BMS accepted the cell without fault flags, and the charge controller completed a full cycle to cutoff at the correct voltage.
- Cold-start satellite acquisition after swap: After fitting this cell, power the unit on outdoors before driving. The GPS performs a cold start after any full power interruption — first fix can take 5–10 minutes versus under a minute for a warm start. Let it acquire a fix before relying on navigation.
GPS accuracy reduced at low battery on the RoadMate 6000
The RoadMate 6000's GPS receiver draws consistent power to maintain satellite lock and signal processing. At low battery, some units reduce receiver sensitivity to extend remaining charge. This shows up as position drift, slower map updates, or a less accurate position dot on the route. Keeping the battery above 3.5V under load avoids this threshold entirely.
RoadMate 6000 shuts off without warning on a charged battery
This happens when the battery's charge indicator is uncalibrated after a swap — the unit reads remaining capacity from a voltage curve that no longer matches the new cell. The on-screen battery icon shows 30–40% remaining, then the unit cuts power when cell voltage drops to the low-voltage cutoff threshold. The fix is to run the battery from full charge down to auto-shutoff once, then charge uninterrupted to 100%. This recalibrates the fuel gauge against the actual voltage curve of the replacement cell.