Adapter for Lenovo ThinkPad T420 4180-QCU 20V 4.5A 90W Specifications
Adapter Type: Genuine Lenovo AC Adapter
Output Voltage: 20V DC
Maximum Output Current: 4.5A
Maximum Output Power: 90W
Input Voltage: 100–240V AC, 50–60Hz
Connector Type: Lenovo Round Barrel Connector (7.9mm × 5.5mm with center pin)
Included Accessories: AC Power Cord
Compatibility: Lenovo ThinkPad T420 4180-QCU and compatible Lenovo ThinkPad T420 series laptops requiring a 90W adapter
Build: Genuine Lenovo OEM adapter with integrated safety protection
Warranty: The warranty tendered hereunder, on the electronic product(s) sold under this invoice will be provided exclusively by their respective Authorized Agents/Distributors and are limited to the period indicated from the date ofyour invoice, except otherwise mentioned as per the warranty conditions as carried along with the products(s)
Adapter for Lenovo ThinkPad T420 4180-QCU 20V 4.5A 90W Overview
The Adapter for Lenovo ThinkPad T420 4180-QCU 20V 4.5A 90W is a genuine Lenovo power adapter engineered to provide reliable and efficient charging for compatible ThinkPad laptops. Delivering 20V DC at up to 4.5A (90W), it supplies stable power for business applications, office productivity, multitasking, and everyday computing.
Featuring a 100–240V AC input, this adapter is suitable for worldwide use. Built-in protection against over-voltage, over-current, overload, overheating, and short circuits helps protect your laptop while ensuring dependable long-term performance.
This is the correct connector for the ThinkPad T420 4180-QCU.
Lenovo Slim Tip
Used on newer Lenovo ThinkPad models.
Different from the Round Barrel connector.
Not compatible with this model.
USB-C
Used on modern Lenovo laptops.
Supports USB Power Delivery where applicable.
Not compatible with this model.
Adapter for Lenovo ThinkPad T420 4180-QCU 20V 4.5A 90W FAQs
1. Is this adapter compatible with the Lenovo ThinkPad T420 4180-QCU?
Yes. It is designed for the Lenovo ThinkPad T420 4180-QCU and other compatible Lenovo ThinkPad T420 laptops requiring a 20V 4.5A 90W adapter.
2. Is this a genuine Lenovo adapter?
Yes. It is a genuine Lenovo OEM AC adapter designed for safe and reliable charging.
3. Can I use this adapter with other Lenovo ThinkPad laptops?
Yes, provided they require the same Round Barrel connector and 20V 4.5A 90W power specification.
4. Does it support worldwide voltage?
Yes. It supports 100–240V AC, 50–60Hz, making it suitable for international use.
5. Does the package include a power cord?
Yes. The adapter includes an AC power cord.
6. Does it include built-in safety protection?
Yes. It features protection against over-voltage, over-current, overload, overheating, and short circuits.
Adapter for Lenovo ThinkPad T420 4180-QCU 20V 4.5A 90W Conclusion
The Adapter for Lenovo ThinkPad T420 4180-QCU 20V 4.5A 90W is a genuine Lenovo OEM power adapter built for dependable everyday performance. With 20V output, 4.5A current, 90W power, 100–240V AC input, Round Barrel connector, and advanced safety protection, it delivers reliable and efficient power for compatible Lenovo ThinkPad T420 laptops.
