2-Power pääakku Acer Aspire 4251 - akku - 4 400 mAh (2P-LC.BTP00.123)

When the original battery in your Acer Aspire 4251 starts to fade, this 2-Power replacement pack restores the freedom of a full workday away from the wall socket. It is built around a 6-cell lithium-ion core that delivers 4400 mAh at 10.8 V, translating to 47.52 Wh of usable energy. That means roughly the same runtime as a fresh factory battery, but without the factory price tag. The black casing matches the laptop’s underside and clicks into the same compartment with no adapters or modifications required.

Highlights

• Direct replacement for Acer AS10D31, AS10D41, AS10D51, AS10D61, AS10D71, AS10D73, AS10D75 and more
• 6-cell Li-ion design: 4400 mAh, 10.8 V, 47.52 Wh
• Compatible with Acer Aspire 4251, 4252, 4339, 4551, 4552, 4738, 4741, 4743, 5251, 5252, 5333, 5336, 5551, 5552, 5733, 5736, 5741, 5742, 5749, 7741, 7750
• Integrated protection against overcharge, over-discharge, overcurrent and short circuit
• CE and RoHS certified for safety and environmental compliance
• Rechargeable and ready to use out of the box

In daily use

Slide the pack into the battery bay and the Aspire recognises it immediately; no driver or BIOS update is needed. The charge controller communicates with the laptop to report remaining capacity accurately, so the on-screen percentage stays reliable from full to empty. Because the cells are protected against deep discharge, leaving the laptop plugged in overnight will not damage the pack, and the overcurrent guard keeps the battery cool during heavy loads like video rendering or gaming. The black finish resists fingerprints and minor scuffs, keeping the machine looking tidy even after months of travel.

Full specifications

• Brand: 2-Power
• Model: 2P-LC.BTP00.123
• Product type: Laptop battery
• Battery technology: Lithium-Ion (Li-ion)
• Number of cells: 6
• Capacity: 4400 mAh
• Voltage: 10.8 V
• Energy: 47.52 Wh
• Colour: Black
• Rechargeable: Yes
• Overcharge protection: Yes
• Over-discharge protection: Yes
• Overcurrent protection: Yes
• Short circuit protection: Yes
• Operating temperature: 0°C to 45°C
• Storage temperature: -20°C to 60°C
• Certifications: CE, RoHS
• Compatible series: Acer Aspire 4251, 4252, 4339, 4551, 4552, 4738, 4741, 4743, 5251, 5252, 5333, 5336, 5551, 5552, 5733, 5736, 5741, 5742, 5749, 7741, 7750
• Replaces part numbers: AS10D31, AS10D41, AS10D51, AS10D61, AS10D71, AS10D73, AS10D75

Final note

For anyone who needs a dependable second battery or a cost-effective replacement, this 2-Power pack delivers the same chemistry and capacity as the original Acer unit. It is a straightforward, no-compromise way to keep an older Aspire running through meetings, lectures or long flights.