Lenovo 20V 4.5A (90W) Charger — Replacement Adapter with Rectangular USB Slim Tip

Keep your Lenovo laptop powered up and protected with this Lava 90W replacement charger designed for models that require 20V 4.5A via the rectangular USB Slim Tip connector. Whether your original adapter is missing, worn, or you just want a dependable spare for the office and travel, this unit delivers stable output, consistent thermal performance, and a neat, lightweight form factor. It’s an excellent daily driver for compatible ThinkPad, IdeaPad, and Yoga lines that specify a 90W Slim Tip input (check your label or power requirements before purchase).

The power brick supports a wide 100–240V input range for global voltage, making it a practical companion for commuters and frequent flyers. Built-in safeguards help protect your device against over-current, over-voltage, short-circuit, and over-temperature events, while the robust DC cable and strain reliefs are designed for repeated daily wraps without kinking. Pair it with a standard AC cord (as supplied) and you’ll have a reliable, tidy charging setup on any desk or classroom podium.

Performance matters with productivity laptops: inadequate adapters can throttle CPU turbo or cause battery warnings. This 90W profile meets the 20V 4.5A requirement many Lenovo systems expect, allowing your machine to maintain full performance during heavy multitasking, video calls, or firmware updates. The Slim Tip interface provides a reassuring click fit and resists accidental disconnections during travel or when moving the laptop around a busy workspace.

To verify compatibility, compare your original adapter label or the underside of your laptop: look for 20V ⎓ 4.5A (90W) and the rectangular Slim Tip DC plug (not USB-C). If your Lenovo uses a different connector or wattage, select the appropriate model to avoid slow charging or error prompts. For best cable hygiene, avoid sharp bends, keep the brick ventilated, and disconnect from mains during prolonged storage.

Key Features

• Purpose-built 90W output: delivers the 20V 4.5A power budget many Lenovo systems require.
• Slim Tip connector: the rectangular Lenovo DC plug for compatible ThinkPad/IdeaPad/Yoga models.
• Safe & stable: OVP/OCP/OTP/SCP protections with consistent voltage regulation under load.
• Global voltage: 100–240V AC input supports international travel (plug type as supplied).
• Everyday durability: reinforced strain reliefs and flexible DC lead for frequent packing.

Specifications