TomTom Go 300 Replacement Battery VF5 3.7V 2600mAh

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

This is a 3.7V, 2600mAh Li-ion cell replacing OEM part VF5 in TomTom portable GPS navigators. It fits the Go 300, Go 400, Go 500, and Go 530 among other models in the same series. Voltage, connector, and BMS signalling match the original spec.

• Go 300 / 400 / 500 / 530 shared platform: These models use the same battery bay, connector pinout, and BMS communication protocol. One cell covers the entire family because TomTom standardised the VF5 across multiple revision runs of this navigator line.
• Bench tested on actual hardware: We ran this cell through charge, discharge, and restart cycles on a Go 500 unit. The BMS accepted the cell without fault flags, the charge controller reached full cutoff correctly, and the fuel-gauge readout tracked accurately from 100% down to the low-voltage threshold.
• Cold-start satellite acquisition after fitting: After any full power interruption — including a battery swap — the Go 300 series loses its cached satellite almanac. Power the unit on outdoors and leave it stationary. Expect the first GPS fix to take 5–10 minutes. Subsequent warm starts will lock in under a minute once the almanac is rebuilt.

Why the Go 300 drops saved routes and favourites after a battery swap

The Go 300 stores some navigation data — including recent destinations and certain route preferences — in battery-backed volatile RAM rather than flash memory. When the battery is fully removed, that RAM loses power and the contents are wiped. Saved favourites stored in the device's main flash memory survive the swap, but anything held only in RAM does not. Before swapping the battery, sync the device with TomTom Home or export your routes to avoid losing recent data.

Go 300 shutting off without warning before the battery indicator reaches empty

After fitting a new cell, the fuel-gauge calibration carried over from the old battery is inaccurate. The device may show two or three bars remaining, then cut off abruptly when the cell voltage drops to the protection threshold — around 3.0V under load. This is a calibration mismatch, not a faulty battery. Run two or three full discharge-and-charge cycles to let the fuel gauge re-learn the actual capacity curve and align the low-battery warning with real remaining charge.