Acer C500 PDA Compatible Battery CP.H020N.010 3.7V 1800mAh

Acer C500 / C530 / N500 — 3.7V Li-ion Replacement Battery (CP.H020N.010)

This 3.7V, 1800mAh Li-ion cell replaces the original battery in the Acer C500, C530, and N500 PDA series. These are handheld personal digital assistants used for mobile calendar management, contact storage, and document viewing. Part numbers CP.H020N.010 and BA-1405106 both apply to this battery slot across the three models.

• C500, C530, and N500 compatibility: All three models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The cell footprint is 66.95 × 42.65 × 11.38mm — physically consistent across the series. Swapping between models uses the same part.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a C500 unit. The BMS negotiated charge correctly, voltage ramp was steady, and the protection circuit tripped at the expected low-voltage threshold without requiring a manual reset.
• Sync before you swap: Perform a full ActiveSync or data sync to your host computer before removing the battery. The C500 series stores open files and application state in RAM powered directly by the main battery. Pull the cell without syncing and that data is gone — not recoverable from the device itself.

Why the Acer C500 won't boot after a new battery is installed

The C500 boot sequence requires a minimum voltage threshold before the processor will initialise. A replacement cell shipped in storage state may sit below that threshold — typically under 3.2V. Inserting it and pressing power will appear to do nothing, with no screen response. Place the device on charge for at least 20–30 minutes before attempting the first boot, and confirm the charging LED activates to verify the BMS has accepted the cell.

Battery life shorter than expected during wireless sync sessions

The C500's Bluetooth and Wi-Fi radio draws significantly more current than standby or basic PIM tasks. During an active wireless sync, instantaneous draw can spike high enough to cause premature low-battery warnings even on a fully charged cell. If battery life drops noticeably during sync, check that the device is fully charged to 4.2V before starting the session. Avoid running wireless sync while the cell is below 50% charge — the voltage sag under radio load can trip the BMS cutoff before the actual capacity is exhausted.