Battery Green Cell HP77PRO for HP ProBook 440/445/450/455/470 (Li-Ion, 5200 mAh, black)

Green Cell HP77PRO is a replacement Li‑Ion battery designed for HP ProBook 440, 445, 450, 455 and 470 series (G0/G1/G2). With a nominal capacity of 5200 mAh and a black housing, this battery provides main power for portable use and is intended to restore or extend battery runtime for compatible laptops. The Green Cell PRO series uses high‑density Samsung SDI cells and a model‑specific design to ensure stable operation and compatibility with the listed HP ProBook models.

Advantages

The battery uses Lithium‑Ion chemistry and high‑density Samsung SDI cells to deliver longer operating time compared with some standard replacements while maintaining stable voltage and discharge characteristics. Its form factor and connector layout are matched to the specified HP ProBook G0/G1/G2 models to guarantee fit and secure contact. The construction includes safety measures typical for Green Cell PRO units to ensure reliable charging and discharge cycles in everyday portable use.

Suitable for

Key specifications

How to use

Turn off the laptop and disconnect the mains adapter before replacing the battery. Remove the laptop's bottom cover or battery access panel according to the laptop manufacturer’s instructions, then carefully disconnect the old battery from the motherboard and remove it. Install the Green Cell HP77PRO in the same position, connect it to the power connector, and reassemble the laptop. After installation, charge the battery fully before the first extended use to allow the battery management system to calibrate.

Recommendations

For safe operation, use the original or manufacturer‑recommended charger and avoid exposing the battery to high temperatures, moisture, or mechanical damage. If storing the battery long‑term, charge it to around 40–60% and store in a cool, dry place. Replace the battery if you notice swelling, abnormal heating, or rapid capacity loss.