BTI replacement 68Wh (4250 mAh, 15.2V) 4-cell Li-Ion laptop battery for Dell Precision 3550 / Latitude 5410 5510 / Inspiron 7706 7506 (black)

BTI replacement 68Wh (4250 mAh, 15.2V) 4-cell Li-Ion laptop battery for Dell Precision 3550 / Latitude 5410 5510 / Inspiron 7706 7506 (black) is a single-unit, black-finished Lithium‑Ion battery intended as a replacement or spare for supported Dell notebook models. The pack supplies 68 Wh of energy at a nominal voltage of 15.2 V and a rated capacity of 4250 mAh, designed to restore portable power and extend run time for compatible laptops.

Advantages

This BTI 4-cell battery uses Lithium‑Ion chemistry to provide a balance of energy density and weight suitable for mobile use. As a direct replacement unit it supports convenient swap-in installation and aims to return the device to usable battery life without requiring system modifications. The black casing matches original equipment aesthetics and the single-pack format is suitable for replacement or spare inventory.

Suitable for

• Replacing a worn or failing battery in Dell Precision 3550
• Replacing a worn or failing battery in Dell Latitude 5410 or 5510
• Replacing a worn or failing battery in Dell Inspiron 7706 or 7506 2-in-1
• Keeping as a spare battery for mobile work and travel

Key specifications

• Battery technology: Lithium‑Ion (Li‑Ion)
• Capacity: 4250 mAh (68 Wh)
• Nominal voltage: 15.2 V
• Cells: 4-cell configuration
• Colour: Black
• Included: single battery unit

How to use

Power down the laptop and disconnect any external power source before removing the old battery. Follow the laptop manufacturer’s service instructions to access and remove the existing pack, then install the BTI replacement battery, secure it according to the device guidelines, and reconnect external power. Charge the battery fully before first use to allow the system to calibrate charge reporting and reach normal runtime performance.

Recommendations

For reliable operation, use the replacement battery with compatible Dell models only, keep the unit within recommended ambient temperature ranges during charge and discharge, and avoid storing the battery fully discharged or at maximum charge for prolonged periods. If the laptop displays firmware or BIOS battery alerts after installation, follow Dell’s support guidance to update system firmware or calibrate battery status.