Battery HP 56Wh 3-cell lithium-ion for EliteBook (N59787-002)

Replacement 56Wh 3‑cell lithium‑ion battery designed for HP EliteBook laptops. This battery provides a rated capacity of 56 watt‑hours and is intended as a like‑for‑like replacement to restore mobile runtime for compatible EliteBook models. The unit is targeted at users who need to replace a worn, degraded, or failing internal battery to regain original unplugged performance for everyday work and travel.

Advantages

The battery offers a specified 56Wh energy capacity in a compact 3‑cell lithium‑ion design, balancing runtime and weight for business‑class laptops. It is manufactured to meet form, fit and function expectations for EliteBook systems, enabling straightforward replacement and reliable power delivery under typical mobile workloads. Using a compatible replacement helps restore expected battery life and reduces the need to remain connected to AC power during extended use.

Suitable for

• Replacing a worn or failing battery in compatible HP EliteBook laptops
• Extended mobile work sessions away from mains power
• Business travel and commuting where longer unplugged runtime is required
• Maintaining original device portability and battery performance

Key specifications

• Battery chemistry: Lithium‑ion (Li‑ion)
• Rated energy capacity: 56 watt‑hours (Wh)
• Cell count: 3 cells
• Form factor: Internal laptop battery designed for EliteBook series
• Typical use: Rechargeable power supply for portable computing

How to use

Power down the laptop and disconnect the AC adapter before removing the existing battery. Follow the manufacturer's service instructions for safe removal and installation of the internal battery, ensuring correct alignment and secure connection to the laptop contacts. After installation, charge the battery fully before first use to allow the system to calibrate battery reporting. Observe on‑screen battery indicators and the operating system's battery management tools to verify normal operation.

Usage recommendations

Store and operate the battery within the device manufacturer's recommended temperature and humidity ranges, avoid exposure to extreme heat or cold, and use the laptop's original charger or an approved replacement. If the battery shows signs of swelling, overheating, or fails to hold charge, discontinue use and replace it. Proper disposal or recycling of the old battery according to local regulations is advised.