Virtalähde HP 90W Smart 3BF70AV kannettaviin, lähtö 90W, varavirtalähde

AC adapter HP 90W Smart 3BF70AV for laptops is a 90-watt replacement power supply designed for use with compatible HP notebook models. It delivers stable power and supports battery charging while connected to mains, providing consistent voltage for normal laptop operation and helping to reduce interruptions from minor power fluctuations. The compact design allows convenient storage and transport for business travel or home office use.

Advantages

The adapter provides a rated output power of 90W to support sustained laptop performance and battery charging. Built with standard safety features, it helps protect the connected device from common electrical issues such as short-term surges and overloads. Its form factor balances power delivery and portability, making it suitable for users who need a reliable replacement power supply without adding significant weight or bulk to their carry items.

Suitable for

• Replacing a lost or damaged original HP laptop power supply
• Using as a secondary power adapter for travel between home and office
• Providing stable power for everyday office work, web browsing and video playback
• Charging laptop battery while performing tasks that require continuous power

Key specifications

• Output power: 90 W
• Intended use: laptop power supply and battery charging
• Input: mains AC power (standard voltage compatibility dependent on region)
• Connector type: laptop charging plug compatible with supported HP models
• Design: compact, portable adapter housing with attached cable
• Safety features: built-in protection against typical electrical faults

How to use

Connect the AC adapter to a suitable mains outlet using the supplied power cord (or a region-appropriate cord) and plug the DC connector into the laptop charging port until it seats securely. Ensure the laptop indicates charging or accepts external power before prolonged use. To remove, first disconnect the adapter from the mains outlet, then unplug the connector from the laptop to avoid potential electrical arcing.

Recommendations

Use the adapter in a well-ventilated area and avoid covering it during operation to prevent overheating. Verify compatibility with your HP laptop model and use the correct regional mains cable. If the adapter becomes unusually warm, emits odors or causes device instability, discontinue use and consult a qualified technician or authorized service center.