Battery Pack HP ProBook 645 G4 11.4V 4212mAh replacement battery

Replacement battery pack for HP ProBook 645 G4 with a nominal voltage of 11.4V and capacity of 4212mAh. This direct-fit laptop battery is designed to restore the original mobile runtime of the HP ProBook 645 G4 and provides a reliable power source for everyday office work, remote tasks and travel. The battery fits into the factory battery compartment and is intended as a spare or replacement cell to maintain productivity away from mains power.

Advantages

The battery pack offers capacity and voltage matched to the HP ProBook 645 G4 specifications to ensure stable operation and compatible charging behaviour. It provides a practical solution for users experiencing reduced runtime from an aging battery, restoring unplugged usage without requiring system modifications. The replacement cell supports standard laptop charging circuitry and is suitable for routine daily charging cycles.

Suitable for (tasks / use cases)

• Replacing a worn or failing battery in an HP ProBook 645 G4
• Extending mobile runtime for business travel and remote work
• Keeping a spare battery for uninterrupted productivity during long meetings or flights
• Maintenance and repair of laptops used in field service, education or shared workstations

Key specifications

• Nominal voltage: 11.4 V
• Capacity: 4212 mAh
• Chemistry: lithium-ion (Li-ion) cell composition
• Form factor: laptop internal replacement battery, direct-fit design
• Typical operating environment: room temperature use for consumer and professional laptops

How to use

Power the laptop down and disconnect the mains adapter before beginning replacement. Remove the access panel or bottom cover following the manufacturer's guidance for the HP ProBook 645 G4, then disconnect the existing battery connector and remove the old battery. Install the replacement pack in the same orientation, secure any retaining screws or clips, reconnect the battery cable and reassemble the case. After installation, start the laptop and allow the battery to charge to full capacity before relying on battery-only operation.

Recommendations

To maximize battery life, avoid prolonged exposure to high temperatures, perform regular charge-discharge cycles, and use the laptop's power management settings to reduce unnecessary drain. If the laptop will be unused for an extended period, store the battery at approximately 40–60% charge in a cool, dry place.