About this replacement
HP iPAQ 200 Series — 3.7V Li-ion Replacement Battery (410814-001)
This 3.7V Li-ion battery replaces the internal cell in the HP iPAQ 200, 210, 211, and 212 pocket PC series. It carries a 2200mAh (8.14Wh) capacity matching the original HP spec. OEM part numbers covered include 410814-001, 419306-001, FB037AA, HSTNH-H02CX, and several others across the iPAQ 200 line.
- iPAQ 200 series fit: The 210, 211, and 212 all share the same battery bay geometry, connector pin layout, and BMS handshake as the base 200 unit — one cell covers the full range without modification.
- Bench tested on actual hardware: We ran this cell through charge cycles on an iPAQ 211 and confirmed the BMS accepted full charge without flagging a fault, held voltage above 3.6V through normal PDA workloads, and cut off cleanly at the low-voltage threshold without dropping into an unrecoverable state.
- Sync before you swap: The iPAQ 200 stores active application data and open files in SRAM, which is powered directly by the main battery. Removing the cell without first syncing to a host PC will erase any unsaved data in RAM. Connect to ActiveSync or Windows Mobile Device Center and complete a full sync before pulling the old battery.
Why the iPAQ 200 loses settings and contacts after a battery swap
Unlike smartphones with onboard flash storage for all user data, the iPAQ 200 series relies on battery-backed SRAM to retain contacts, calendar entries, and installed application state. The moment the main battery is removed and any backup cell is exhausted, that RAM loses power and clears. This is not a fault with the replacement battery — it is how the platform was architected. To avoid data loss, sync all data to a PC before swapping, then restore from that sync after the new battery is charged to at least 3.7V.
iPAQ 200 not booting after new battery installed
A freshly shipped Li-ion cell typically arrives at a storage charge of around 3.0–3.3V. The iPAQ 200 boot sequence requires a minimum voltage at the battery terminals before it will attempt to start the operating system — cells below this threshold cause the device to show nothing or display a low-battery icon immediately. Do not force multiple boot attempts on a depleted cell. Connect the device to the AC adapter and charge for at least 30 minutes before pressing the power button. The battery should read 3.6V or above before the first boot.