DELL 451-BBUN 62WHr 4-Cell laptop battery
- Lithium-Ion
- Notebook
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A 65 W USB-C power adapter with 100-240 V AC input and 20 V 3.25 A output, compatible with ThinkPad, Yoga and Chromebook models
This 65W USB-C adapter supplies up to 20V at 3.25A for ThinkPad T-series, Yoga and Chromebook models listed in the compatibility data. It accepts a universal 100-240V AC input at 50-60Hz and also covers 45W part numbers for lighter-duty units. Buyers needing a barrel-tip connector or a higher-wattage brick for larger workstations should look elsewhere.
The unit maintains its rated 65W output continuously while the laptop draws full load, rather than throttling after a short burst. It operates from a 1.5A AC line current across the 100-240V range, so voltage fluctuations in travel or office environments do not reduce available power. No efficiency curve or thermal derating data is provided by the supplier.
The adapter uses passive convection cooling with no moving parts, so it produces no audible fan noise during normal operation. Typical surface temperature rises with load but stays within standard limits for sealed AC-DC bricks of this class. Power draw at the wall matches the 1.5A input specification at full output.
Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.
| Power | |
|---|---|
| Battery type | AC Adapters |
The adapter has no fan and runs silently; its only thermal output is the normal warmth from converting 100-240V AC at 1.5A to 20V 3.25A DC.
Your laptop must charge through a USB Type-C port and accept 20V 3.25A (65W) or 45W via USB Power Delivery.
Yes — the adapter matches part numbers ADLX45YDC2A and ADLX45YCC2A, so it replaces the 45W unit while delivering up to 65W over USB-C.
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