About this replacement
Mitac Mio H610 — 3.7V Li-ion Replacement Battery (E4MT131323H12)
This 3.7V 1400mAh Li-ion cell replaces the original battery in the Mitac Mio H610 portable GPS navigator. It matches the OEM part number E4MT131323H12 and fits the H610's battery bay directly. Capacity is 1400mAh (5.18Wh), identical to the factory specification.
- Mio H610 fitment: The H610 uses a slim single-cell Li-ion pack at 3.7V nominal. The battery connector and BMS handshake are matched to this voltage rail — fitting a mismatched cell can trigger an immediate BMS lockout on the host device.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a GPS navigator test rig. The BMS held the charge termination voltage correctly at 4.2V and the low-voltage cutoff tripped cleanly at 3.0V with no erratic shutdowns.
- Cold-start initialisation after fitting: After installing this battery, take the H610 outdoors and power it on before driving. A full power interruption forces a cold GPS start — allow 5 to 10 minutes for first satellite acquisition before relying on navigation.
GPS accuracy reduced at low battery on the Mio H610
The H610's GPS receiver draws more current during active satellite tracking than during standby. At low battery voltage — typically below 3.4V — some GPS units step down receiver sensitivity to stay within power budget. This can cause position drift or a reduced satellite count even though the device is still on. Keeping the battery above 3.6V during active navigation prevents this behaviour.
Mio H610 shuts off without low-battery warning
After a battery swap, the H610's fuel gauge is uncalibrated — it has no charge history for the new cell. The on-screen battery indicator can read mid-level right up until the BMS hits its cutoff threshold. This is not a fault with the replacement cell; the gauge recalibrates over one or two full charge-discharge cycles. Run the device down to auto-shutoff and charge it fully twice to restore accurate indicator readings.