TomTom Go 300 GPS Replacement Battery VF5 3.7V 3000mAh

TomTom Go 300 / Go 500 Series — 3.7V Li-ion Replacement Battery (VF5)

This is a 3.7V 3000mAh Li-ion cell using OEM part number VF5, fitting the TomTom Go 300, Go 400, Go 500, and Go 530 among other models in this navigator series. It restores portability to a GPS unit that no longer holds a useful charge. Voltage and capacity match the original cell exactly.

• Go 300–530 series compatibility: These models share the same VF5 battery format, voltage rail, and connector layout. The BMS handshake across the range accepts this cell without error flags or charge faults.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Go 500 unit. The BMS accepted the cell cleanly, reached full charge without thermal event, and held voltage through a full navigation session without sag cutoff.
• First satellite fix after swap: After fitting this cell, power the unit on outdoors and let it run a cold-start acquisition. Full power removal clears the GPS receiver's almanac data, so the first fix can take 5–10 minutes. Subsequent warm starts drop back under a minute once almanac data rebuilds.

GPS accuracy reduced when the battery runs low

Some TomTom Go units reduce RF receiver sensitivity at low state-of-charge to conserve power. When this kicks in, the unit may show a weaker satellite signal count or drift position slightly on the map. This is a firmware-level power saving decision, not a fault with the cell itself. Keeping the battery above 3.5V per cell under load prevents the unit from entering this reduced-sensitivity mode.

Device shuts off without warning before the low-battery indicator appears

This happens when the battery gauge software is uncalibrated after a cell swap — the unit's fuel gauge still references voltage curves from the old, degraded cell. The shutdown voltage threshold gets hit before the on-screen indicator has time to show a meaningful warning. To recalibrate, run the unit on active navigation from a full charge down to auto-shutoff once, then charge fully without interruption. After one full cycle, the gauge maps correctly to the new cell's discharge curve.