TomTom One GPS Replacement Battery 3.7V 1100mAh

TomTom One / One Europe / Rider Series — 3.7V Li-ion Replacement Battery (F650010252)

This 3.7V 1100mAh Li-ion cell replaces the original battery in the TomTom One, One Europe, One Regional, Rider, and over 22 additional variants. It fits the portable GPS navigator used for vehicle navigation and turn-by-turn route guidance. Voltage and capacity match OEM specification exactly — no modification needed.

• One, One Europe, One Regional, and Rider compatibility: These models share the same 3.7V cell format, connector pinout, and physical footprint — 42.80 × 34.30 × 8.50mm — which is why one cell covers the full range. The BMS handshake on each variant accepts the same charge termination voltage, so no firmware issues arise on swap.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the TomTom One platform. The BMS reached charge termination cleanly at 4.2V and held the low-voltage cutoff without triggering a false shutdown during normal navigation load.
• Cold-start satellite acquisition after power interruption: After fitting this cell, power the unit on outdoors before your first drive. The GPS performs a full cold start after any complete power removal — expect 5 to 10 minutes for the first satellite fix rather than the sub-minute warm start you were used to before the swap.

GPS accuracy reduced at low battery on the TomTom One

When cell voltage drops toward 3.5V, the TomTom One reduces power to the GPS receiver to protect the remaining charge. This cuts receiver sensitivity, which degrades position accuracy and can cause the blue dot to drift or snap to wrong roads. The fix is straightforward — keep the unit on USB power during long routes, or charge before the battery indicator drops below one bar. A fresh cell at full capacity delays this threshold considerably compared to a degraded original battery.

TomTom One shuts off without warning instead of showing a low battery alert

This happens when the battery indicator is no longer calibrated to the actual cell — the on-screen percentage shows two bars, then the unit cuts off instantly. The root cause is that the fuel gauge in the TomTom One uses a stored discharge curve that drifts once the original cell ages or is replaced. To recalibrate, run two full discharge-to-shutdown cycles followed by a full charge to 4.2V without interruption. After two cycles the indicator aligns to the new cell and the low-battery warning reappears at the correct threshold.