Acer N10 Compatible Battery H50B 3.7V 2700mAh

Acer N10 — 3.7V Li-Polymer Replacement Battery (H50B)

This is a 3.7V, 2700mAh Li-Polymer battery for the Acer N10 PDA. It replaces OEM part numbers H50B and SX042. The N10 is a handheld Pocket PC combining phone, calendar, and computing functions — keeping this battery healthy keeps all of that running.

• N10 platform fit: The N10 uses a flat Li-Polymer cell at 3.7V with a BMS that monitors cell voltage and temperature. This replacement cell matches the same voltage rail, connector pinout, and physical footprint — 38.54 × 62.44 × 3.79mm — so the BMS handshake completes without error codes.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the N10 platform and confirmed the BMS accepted the cell, reached full charge without fault flags, and held voltage stable under both radio and CPU load.
• Sync before you swap: The N10 keeps open files, contacts, and application state in RAM powered directly by the main battery. Pull the battery without syncing first and that data is gone. Run a full ActiveSync or Windows Mobile Device Center sync to the host PC before removing the old cell.

Why the N10 won't boot after a new battery is installed

The N10 boot sequence requires a minimum cell voltage before the processor initialises. A new Li-Polymer cell ships at a partial storage charge — typically around 3.6–3.7V — which can sit right on the edge of the N10's boot threshold. If the device shows nothing when you press power, connect it to the AC charger for at least 30 minutes before attempting to boot. Do not try to boot from USB power alone — the N10 AC adapter delivers higher current than USB, and the BMS needs that input to bring the cell up to the minimum boot voltage of approximately 3.8V.

Battery draining faster than expected during wireless sync sessions

The N10's Bluetooth and Wi-Fi radios draw significantly more current than the device does in standby or basic PIM use. When both radios are active during a sync session, instantaneous current draw can be three to four times the standby baseline, which accelerates voltage sag on an aging cell. This replacement cell at 2700mAh gives the BMS more headroom before voltage sag trips the low-voltage cutoff. If drain is still faster than expected after a full charge cycle, check that background radio activity — such as push email polling — is not keeping the radio awake between intentional syncs.