AC power adapter HP 45W 19V 2.31A (model 8AJ09AV) for HP laptops

AC power adapter HP 45W 19V 2.31A (model 8AJ09AV) for HP laptops is an external replacement power supply designed to provide stable DC power for compatible HP notebook computers. The adapter converts AC mains voltage to a regulated 19V DC output with a rated power of 45 watts and a maximum current of 2.31 amperes. Its compact brick and detachable cable design make it suitable as a spare, replacement, or portable unit for use at home, in the office or while travelling.

Advantages

The adapter delivers a consistent 19V output and includes built-in protection features against short circuits, overcurrent and overheating to support safe charging and device operation. Its compact form factor and lightweight construction simplify storage and transport. The unit is designed to meet common compatibility and safety expectations for HP laptop power supplies while minimizing voltage fluctuations during normal use.

Suitable for

• Replacing a lost or damaged original HP laptop power adapter
• Using as a spare adapter for travel or commuting
• Powering HP laptops that accept a 19V, ~2.31A external supply for everyday tasks

Key specifications

• Output voltage: 19 V DC
• Rated output power: 45 W
• Maximum output current: 2.31 A
• Input: AC mains voltage (standard household range)
• Connector type: barrel-style DC connector compatible with specific HP laptop inlets
• Physical: compact external adapter brick with attached cable and detachable AC mains lead
• Built-in protections: overcurrent, short-circuit and thermal protection

How to use

Connect the supplied AC mains lead to the adapter and plug it into a standard wall outlet. Insert the adapter's DC connector firmly into the laptop's power inlet until it seats securely. When connected, the adapter supplies DC power to the laptop and charges the battery if present. Disconnect by unplugging the DC connector from the laptop and then removing the AC mains plug. Use only on devices specified to accept the listed voltage and current ratings.

Recommendations

Check the laptop's required input voltage and polarity before use and ensure the connector fits the device. Avoid exposing the adapter to moisture, prolonged high temperatures or heavy mechanical stress. For best performance, allow ventilation around the adapter brick during operation and use the adapter on a stable AC supply. If the adapter becomes hot to the touch, disconnect it and allow it to cool before further use.