Acer AcerNote 350 Replacement Battery DR35 10.8V 4000mAh

Acer AcerNote 350 Series — 10.8V Ni-MH Replacement Battery (DR35)

This is a 10.8V, 4000mAh (43.2Wh) Ni-MH replacement battery for the Acer AcerNote 350 series notebook. It fits the AcerNote 350, 350C, 350P, and 350PC, among other variants in the same line. Install it when the original cell no longer holds charge or has failed entirely.

• AcerNote 350 series fit: All covered models share the same 10.8V battery rail, connector pinout, and BMS handshake protocol. That's why one part number — DR35 — covers the 350, 350C, 350P, and 350PC variants without modification.
• Bench tested on actual hardware: We cycled this cell under a simulated notebook load and monitored BMS cutoff behaviour. The protection circuit responded correctly at low-voltage threshold and accepted a full charge without thermal event.
• First-cycle conditioning on Ni-MH: After installing, run the laptop down to hibernate cutoff, then charge uninterrupted to 100%. Ni-MH cells in this class need that first full discharge-charge cycle to let the BIOS battery learn cycle recalibrate against the new cell's actual capacity. Skipping this leaves the fuel gauge reading stale data from the old pack.

BIOS reporting poor battery health immediately after installing the DR35

The AcerNote BIOS stores battery state data in EEPROM and compares it against what the new cell reports on first handshake. A brand-new cell with no discharge history looks wrong to the BIOS because the logged wear data doesn't match. This triggers a false "poor health" or "replace battery" warning. Running one full discharge-to-hibernate followed by a complete uninterrupted charge clears the mismatch. After two to three cycles, the BIOS learn cycle overwrites the stale EEPROM values and the warning clears.

Laptop shuts down abruptly while the fuel gauge still shows 20–30% remaining

This is a voltage cliff failure — not a capacity problem with the replacement cell. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can track, and the BMS trips a hard cutoff before the displayed percentage reaches zero. The fuel gauge IC was calibrated against the old degraded cell and hasn't yet mapped the new cell's discharge curve. Run two full discharge-to-hibernate cycles and the IC will recalibrate. After calibration, shutdowns should align with 5% or lower on the gauge.