Specifications

Overview

Full Specifications

Power Adapter

Output Voltage	20V DC
Output Current	3.25 Amps
Power Rating	65 Watts
Input Voltage	AC 100-240V, 50-60Hz (Worldwide)
Connector Type	7.9mm x 5.5mm (Big Pin / Yellow Tip)
Connector Appearance	Large round barrel, yellow plastic tip
Cable Length	Approx. 1.5m
Warranty	1 Year Warranty

✓

Quality Check: Stable power delivery with short-circuit and over-load protection for laptop safety.

Product Details

Product Overview

Lenovo 65W Big Pin Replacement AC Adapter

20V / 3.25A Power Supply with 7.9mm x 5.5mm Round Barrel Connector

LENOVO

A 65W replacement AC adapter for Lenovo laptops, delivering 20V at 3.25A. It features the "Big Pin" (7.9mm x 5.5mm round barrel connector), compatible with older ThinkPad, IdeaPad, and Yoga models that use this thick yellow-tipped connector.

The Lenovo 65W Big Pin Adapter (20V, 3.25A) is designed for older Lenovo ThinkPad, IdeaPad, and Yoga series that require the 7.9mm x 5.5mm round barrel connector (often called "Big Pin" or "Yellow Tip").

Compatible Laptop Models (Partial List)

Series	Compatible Models
ThinkPad	T430, T400, T410, T420, T500, T510; X200, X201, X220, X230; X100e, X120e, L540; R60, R400, R500
IdeaPad	G50-30, G50-45, G50-70, G50-80, Z50-70, V110-15ISK, V310-15ISK
Yoga	Yoga 11S, Yoga 13 Series

How to Identify Your Connector

Lenovo has used three main connector types for 20V laptops. Measure your existing charger's tip before buying.

Connector Type	Size	Appearance	This Adapter?
Big Pin (Round)	7.9mm x 5.5mm	Thick barrel, yellow tip	✅ YES
Slim Tip (Round)	4.0mm x 1.7mm	Thin barrel, black/yellow tip	❌ NO
Slim Tip (Square)	11mm x 4.5mm	Rectangular with center pin	❌ NO

✓

Buy Lenovo 20V 3.25A 65W Big Pin Adapter (7.9mm x 5.5mm round connector) for ThinkPad T430, X220, IdeaPad G50 series. Check connector compatibility before ordering.