DELL 45N3J laptop spare part battery

The Dell W125704477 3-cell Lithium-Ion (Li-Ion) battery provides portable power for compatible Dell laptops with a capacity of up to 42 WHr. Designed as a factory-fit spare, this black battery delivers reliable performance and is intended to replace or extend the original laptop power source for mobile use.

Advantages

This Lithium-Ion battery offers stable discharge and compatibility with Dell systems specified for MPN W125704477. Its 42 WHr capacity supports uninterrupted laptop operation while on the move, and the product colour and form factor match original equipment for a proper fit. Built with standard safety features of modern Li-Ion cells, it is intended for longevity and dependable daily use.

Suitable for

• Replacing a worn or faulty Dell laptop battery
• Extending battery runtime for travel or mobile work
• Keeping as a spare power source for field or remote use

Key specifications

• Manufacturer: Dell
• MPN: W125704477
• EAN: 5704174227236
• Battery technology: Lithium-Ion (Li-Ion)
• Cells: 3-cell
• Capacity: up to 42 WHr
• Colour: Black
• Category: Batteries for portable devices

How to use

Turn off the laptop and disconnect any external power source. Remove the existing battery according to the laptop manufacturer’s instructions, then insert the Dell W125704477 battery into the battery bay until it locks in place. Reconnect power and start the laptop; allow the battery to fully charge before first use to calibrate charge reporting. Follow Dell’s service manual for model-specific removal and installation steps to avoid damage.

Recommendations

Store and operate the battery at moderate temperatures, avoid exposure to moisture or direct heat, and use only compatible Dell chargers. If the battery shows physical damage, swelling, or performance degradation, discontinue use and replace it. Dispose of the battery in accordance with local electronic waste regulations.