Fonte de alimentação AC HP 45W 19V 2,31A Modelo 741727-850

AC power adapter HP 45W 19V 2.31A model 741727-850 is an external power supply designed to provide stable power and recharge batteries for compatible HP laptops. The adapter delivers a nominal output of 19V at 2.31A (45W) and includes a DC output connector and a standard AC input cable. It is intended as a replacement for lost, damaged, or worn chargers and for use where a reliable external power source is required, such as at home, in the office, or while traveling.

Advantages

This HP 45W adapter provides consistent voltage regulation and overcurrent protection to help ensure safe and stable charging. Its compact form factor and industry-standard connector make it easy to carry and connect to compatible HP notebooks. The adapter supports continuous device operation while charging the internal battery, reducing downtime and minimizing the need to rely solely on battery power.

Suitable for (tasks / use cases)

• Replacing a lost or damaged laptop charger
• Keeping an extra charger at the office or in a travel bag
• Providing continuous power during extended work or presentations
• Charging the laptop battery while using the device

Key specifications

• Output power: 45 W
• Output voltage: 19 V
• Output current: 2.31 A
• Input: standard AC mains input compatible with common household outlets
• Connector: DC barrel-style output connector compatible with specified HP laptop models
• Protection features: built-in overcurrent and short-circuit protection
• Form factor: compact external AC adapter

How to use

Connect the AC input cable to a mains outlet, then plug the DC connector into the laptop's power socket. Ensure the connector seats fully and the adapter's indicator (if present) shows power. When connected, the adapter will supply power to the laptop and charge the internal battery according to the device's charging control. Disconnect the adapter by removing the DC connector first and then unplugging from the mains outlet. Use the adapter within the specified input voltage range and avoid placing it on soft surfaces that may block ventilation.

Recommendations

Use this adapter with compatible HP laptops that require a 19V/2.31A supply and a matching connector. Inspect the cable and connectors regularly for damage, avoid exposing the adapter to moisture, excessive heat, or prolonged direct sunlight, and store it in a dry, ventilated place when not in use. If the adapter becomes unusually hot, emits noise, or shows visible damage, stop using it and replace it.