About this replacement
TomTom Go 610 / Go Essential — 3.7V Li-ion Replacement Battery (P6 / AHA1111107)
This 3.7V, 1100mAh Li-ion cell replaces the factory battery in the TomTom Go 610, Go Essential, Navigator 6, and 4FA60 portable GPS units. It fits directly into the original battery bay and connects to the same management circuit. Capacity matches the product data spec at 4.07Wh.
- Go 610 and Go Essential compatibility: These models share the same battery bay dimensions (53 × 34 × 4mm), connector pinout, and 3.7V nominal voltage rail. The BMS in each unit reads cell state of charge over the same two-wire interface, so one cell covers the full list without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a Go 610 unit. The BMS accepted the cell, reported charge state accurately across the full range, and did not trigger overcurrent or overvoltage faults during testing.
- Cold-start satellite acquisition after swap: After fitting this cell, power the GPS on outdoors and let it run until it acquires a satellite fix before driving. A full power interruption clears the ephemeris data the receiver holds in memory, so the first fix after a battery swap is a cold start — expect 5 to 10 minutes outdoors versus under a minute for a warm start on a unit that has been used recently.
GPS accuracy reduced at low battery on the Go 610
The Go 610's GPS receiver draws continuous power to maintain satellite tracking. When cell voltage drops toward the low threshold, the device scales back receiver sensitivity as a power-saving measure. This shows up as position drift or a reduced satellite count on the signal bar — not a hardware fault. Keeping the cell above 3.5V during navigation maintains full receiver sensitivity and stable position fix.
Go 610 shuts off without warning before the battery indicator reaches empty
When an aged battery is replaced with a new cell, the device's fuel gauge is still calibrated to the degraded capacity curve of the old cell. This mismatch means the on-screen indicator may show one or two bars remaining when the unit cuts out. Run two or three full charge-to-discharge cycles on the new cell so the fuel gauge recalibrates to the actual capacity. After recalibration, the low-battery warning will fire at the correct voltage — around 3.4V — giving adequate notice before shutdown.