Battery Fujitsu CP790916-XX for LifeBook U727 U728 U729 E752

The Fujitsu CP790916-XX battery is a direct replacement battery compatible with Fujitsu LifeBook U727, U728, U729 and E752 laptops. Designed with Lithium Polymer (LiPo) technology and a capacity of 4170 mAh, this battery delivers steady power to support typical mobile work tasks and extends run time compared to worn or degraded cells. The pack fits the specified LifeBook models to restore portable operation and maintain device portability.

Advantages

Using LiPo chemistry, the battery offers a compact form factor and consistent voltage output through discharge, with a capacity suited for everyday office, web browsing and light multimedia use. The replacement pack restores original run-time characteristics and helps avoid unexpected shutdowns due to an aging battery. Its design aligns with the physical and electrical requirements of the supported LifeBook models for safe and reliable operation.

Suitable for

• Replacing a worn or failing battery in Fujitsu LifeBook U727, U728, U729 and E752
• Extending mobile runtime for office tasks and web browsing
• Maintaining portability during travel or field work
• Replacing a battery before an extended trip or long meeting

Key specifications

• Battery chemistry: Lithium Polymer (LiPo)
• Nominal capacity: 4170 mAh
• Intended devices: select Fujitsu LifeBook U7xx and E7xx series laptops
• Form factor: slim internal laptop battery designed for specific LifeBook bay
• Typical use: mobile computing, office applications, web browsing

How to use

Power down the laptop and disconnect any external power source before replacing the battery. Follow the laptop manufacturer's instructions for safe removal and installation of the internal battery, using appropriate tools and anti-static precautions if required. After installation, charge the battery fully using the original AC adapter or a compatible charger to allow the system to recalibrate battery reporting. Observe the system's battery indicator during initial charge cycles to confirm correct installation and operation.

Recommendations

For best long-term performance, cycle the battery periodically by charging to full and discharging to moderate levels rather than keeping it at 100% or 0% for extended periods. Store the battery in a cool, dry place if not used for long periods and avoid exposing it to high temperatures or moisture. Use only approved chargers and follow Fujitsu's safety guidance for battery handling and disposal.