Description

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Overview

The Lenovo ThinkPad R61i 8936 90W AC Adapter Charger with Power Cord is designed to deliver dependable and efficient power for the Lenovo ThinkPad R61i series. Providing a regulated 20V DC output at 4.5A, it powers the laptop efficiently while simultaneously charging the battery.

Built with high-efficiency switching technology, the adapter delivers stable voltage for office productivity, web browsing, accounting applications, programming, multimedia playback, online learning, and daily business use. Intelligent voltage regulation helps protect internal components while ensuring long-term charging reliability.

Its universal voltage compatibility makes it suitable for international use, while the included UK 3-pin power cord allows immediate setup. Lenovo's official specifications for the ThinkPad R61i identify the required 90W Universal AC Adapter with 20V DC at 4.5A, making this an ideal replacement or spare charger.

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Price

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Full Specifications

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Electrical Output Specifications

The charger delivers the electrical characteristics specified for the Lenovo ThinkPad R61i.

• Output Voltage: Stable 20V DC regulated output.
• Output Current: 4.5 Amps continuous current delivery.
• Maximum Output Power: 90 Watts.
• Stable Voltage Regulation: Supports reliable laptop operation during demanding workloads.
• Efficient AC-to-DC Conversion: Reduces energy loss while maximizing charging efficiency.
• Low Ripple Output: Helps protect sensitive motherboard and battery components.
• Smart Load Detection: Automatically supplies the required power.

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Common Wattage Tiers & Use Cases

45W Chargers

Suitable for lightweight notebooks and entry-level laptops used for browsing, office work, and education.

65W Chargers

Designed for ultrabooks, compact ThinkPads, and IdeaPads performing everyday productivity tasks.

90W Chargers (This Charger)

The 90W charger is designed for business-class ThinkPad laptops including the ThinkPad R61i series. It is ideal for office productivity, accounting software, software development, online meetings, document processing, multimedia playback, educational applications, and continuous daily professional use while charging the battery.

135W–170W Chargers

Recommended for mobile workstations, multimedia laptops, and professional systems with higher power requirements.

230W and Above

Designed for gaming laptops, engineering workstations, AI computing, CAD software, and professional graphics applications.

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Input Specifications

• Input Voltage: AC 100–240V
• Input Frequency: 50–60Hz
• Automatic Voltage Detection: Compatible with worldwide electrical systems.
• High-Efficiency Power Conversion: Maximizes charging efficiency.
• Low Heat Generation: Improves long-term durability.
• Stable Input Regulation: Maintains consistent output performance.
• Energy-Efficient Continuous Operation: Suitable for prolonged daily use.

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Connector Types

Barrel Connector

• Lenovo Round Barrel DC connector.
• Provides a secure and reliable connection.
• Designed for dependable long-term charging performance.

USB-C Power Delivery (PD)

• Not supported.

Micro USB

• Not applicable.

Proprietary Connectors

• Not applicable.

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord FAQs

Q1. Is this charger compatible with the Lenovo ThinkPad R61i 8936?

Yes. It is designed for the Lenovo ThinkPad R61i Type 8936 and other compatible ThinkPad R61i models requiring a 90W 20V AC adapter.

Q2. What electrical output does this charger provide?

It delivers 20V DC at 4.5A, providing a maximum output of 90W.

Q3. Does the package include a power cord?

Yes. The package includes both the 90W AC adapter and a UK 3-pin power cord.

Q4. Can I use the laptop while charging the battery?

Yes. The adapter is designed to power the laptop and charge the battery simultaneously.

Q5. Does it include built-in electrical protection?

Yes. It includes protection against over-voltage, overload, overheating, over-current, and short circuits.

Q6. Is this a suitable replacement for the original Lenovo charger?

Yes. It matches the original 20V 4.5A 90W specifications required by the ThinkPad R61i series.

Charger for Lenovo ThinkPad R61i 8936 – 90W 20V 4.5A AC Adapter Charger + Power Cord Conclusion

The Lenovo ThinkPad R61i 8936 90W AC Adapter Charger + Power Cord delivers reliable, efficient, and safe power for your ThinkPad laptop. With its 20V 4.5A (90W) regulated output, included UK power cord, durable construction, universal voltage compatibility, and comprehensive safety protection, it is an ideal replacement charger for business professionals, students, and everyday users.