Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Overview

The Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W is a genuine Lenovo AC adapter designed to provide safe, stable, and efficient power for compatible IdeaPad laptops. Delivering a regulated 20V DC output at 3.25A, it supplies 65W of power, ensuring reliable charging and uninterrupted laptop performance.

With a universal 100–240V AC input, this charger is ideal for home, office, and travel use. Built-in protection against over-voltage, over-current, overheating, overload, and short circuits helps protect both your laptop and the adapter for dependable long-term operation.

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Price Table

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Key Specifications

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Electrical Output Specifications

The charger provides stable electrical output to ensure safe and efficient charging for compatible Lenovo IdeaPad laptops.

Voltage (V): 20V DC

• Delivers a stable 20V DC output.
• Matches Lenovo's recommended voltage specification.
• Ensures reliable laptop operation.

Amperage (A): 3.25A

• Supplies up to 3.25A of output current.
• Provides efficient battery charging.
• Maintains consistent power delivery.

Wattage (W): 65W

• Delivers a maximum power output of 65W.
• Suitable for compatible Lenovo IdeaPad laptops.
• This charger belongs to the 65W charging category.

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Common Wattage Tiers & Use Cases

45W

• Designed for lightweight notebooks.
• Suitable for basic productivity tasks.
• Not sufficient for this model.

65W

• Ideal for everyday laptops and ultrabooks.
• Supports reliable charging and daily computing.
• This charger belongs to the 65W category.

90W

• Used for business-class laptops.
• Provides additional power capacity.
• More powerful than required for this model.

135W

• Designed for high-performance notebooks.
• Supports demanding workloads.
• Not required for compatible 65W devices.

170W+

• Intended for gaming laptops and workstations.
• Delivers higher power output.
• Not applicable to this charger.

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Input Specifications

Input Voltage

• Accepts worldwide input from 100V to 240V AC.
• Suitable for international travel.
• No voltage converter required.

Input Frequency

• Supports both 50Hz and 60Hz electrical systems.
• Compatible with global power standards.
• Ensures dependable charging worldwide.

Power Source

• Connects directly to standard AC wall outlets.
• Converts AC power into regulated DC output.
• Delivers stable and efficient charging.

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Connector Types

Lenovo Round Barrel Connector

• Designed for compatible Lenovo IdeaPad laptops.
• Provides a secure and reliable power connection.
• This charger uses the Lenovo Round Barrel connector.

Lenovo Slim Tip

• Used on newer Lenovo laptop models.
• Different from the Round Barrel connector.
• Not compatible with this charger.

USB-C Power Delivery (PD)

• Found on modern Lenovo laptops and tablets.
• Supports USB-C charging.
• Not compatible with this model.

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W FAQs

1. Is this charger compatible with the Lenovo IdeaPad U550 3749-59U and 3749-5BU?

Yes. It is designed for the Lenovo IdeaPad U550 3749-59U, 3749-5BU, and other compatible Lenovo laptops requiring a 20V 3.25A 65W adapter.

2. Does the package include a power cord?

Yes. The charger includes an AC power cord.

3. Can I use this charger with other Lenovo laptops?

Yes. As long as the laptop requires the same 20V 3.25A 65W output and uses the same Round Barrel connector, it is compatible.

4. Does it support worldwide voltage?

Yes. It supports 100–240V AC, 50–60Hz, making it suitable for worldwide use.

5. Is this an OEM-quality replacement charger?

Yes. It is manufactured to OEM standards for reliable compatibility and long-lasting performance.

6. Does it include built-in safety protection?

Yes. It features protection against over-voltage, over-current, overload, overheating, and short circuits for safe and dependable charging.

Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W Conclusion

The Charger for Lenovo IdeaPad U550 3749-59U 3749-5BU 20V 3.25A 65W is a dependable OEM AC adapter that delivers efficient and stable power for compatible Lenovo IdeaPad laptops. Featuring 20V output, 3.25A current, 65W power, a Lenovo Round Barrel connector, 100–240V AC input, and advanced safety protection, it is an excellent replacement charger for keeping your laptop powered wherever you go.