About this replacement
O2 XDA Ignito — 3.7V Li-ion Replacement Battery (DIAM160)
This is a 3.7V, 1800mAh Li-ion battery for the O2 XDA Ignito PDA. It replaces OEM part numbers DIAM160 and 35H00113-003. If your XDA Ignito shuts down unexpectedly or no longer holds a charge, this is the direct cell replacement.
- XDA Ignito platform fit: The XDA Ignito uses a single-cell 3.7V Li-ion pack with a specific connector and BMS handshake tied to the Windows Mobile power management stack. This replacement matches that voltage rail and connector pin-out so the device recognises the pack correctly on boot.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the XDA Ignito platform. The BMS responded to charge termination cleanly, and the device reported battery status correctly through the Windows Mobile power management interface without errors.
- RAM state before battery removal: Perform a full ActiveSync data sync to your PC before pulling the old battery. The XDA Ignito stores open files and application state in volatile SRAM powered directly by the main battery — cutting power without syncing first will wipe unsaved data and open application state.
Why the XDA Ignito loses saved data during a battery swap
Unlike modern smartphones with flash-based storage for app state, the XDA Ignito relies on SRAM to hold application data, contacts, and open files. That SRAM is powered continuously by the main battery — no battery means no power to RAM, and everything stored there is gone. There is no internal backup capacitor large enough to hold state through a full battery swap. Sync completely via ActiveSync before removing the old cell, then fit the new battery and boot.
XDA Ignito stuck on boot screen after fitting a new battery
A freshly shipped Li-ion cell typically arrives at a storage charge of around 40–50%, which can sit below the minimum voltage the XDA Ignito boot sequence requires to initialise the radio and display together. If the device stalls or loops on the boot screen, connect the charger before attempting to power on. Allow the cell to reach at least 3.9V before the first boot attempt. Once fully charged to 4.2V, the boot sequence completes normally.