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Compact 65W USB-C laptop charger with 10ft cable, matte black finish

81ER 65W USB-C Laptop Battery 20V 3.25A

SKU CH-6TW4-4SHEN MPN 81ER

65W USB-C power adapter delivering 20V 3.25A for compatible Lenovo ThinkPad, Yoga, Chromebook and IdeaPad models

  • Battery Voltage20V
  • Battery Capacity20 volts
  • AC Adapter Voltage20V
  • AC Adapter Current3.25 amps
  • AC Adapter Output Power65W
  • FeaturesUSB Type C, Corded Electric, 0, type_c_2pin_eu, 20 volts, 3.
  • Charges compatible Lenovo laptops up to 50% in 40 minutes with 65W output
  • 10 ft combined cable length gives flexible placement at desk or outlet
  • Works with 65W and 45W USB-C Lenovo ThinkPad, Yoga, Chromebook and IdeaPad models
  • Built-in safeguards protect against overcharging, short circuit and overheating
  • Weighs 6.7 ounces for easy transport in a laptop bag

What it is and who it's for

The 81ER is a 65W USB-C laptop charger rated at 20V and 3.25A. It supports a wide range of Lenovo ThinkPad, Yoga, IdeaPad and Chromebook models plus compatible USB-C laptops from HP, Dell, Acer and Samsung. The unit is new and ships with a 10ft combined cable length.

Sustained-load behaviour

The adapter delivers a steady 65W output, which also covers 45W devices for stable charging without overload. A 10ft cord made of premium copper wire core maintains the rated 20V/3.25A, 20V/2.25A and 15V/3A profiles over the full length. Built-in dynamic hardware and software systems regulate power flow continuously during extended sessions.

Thermals, noise and power draw

An integrated cooling system and multi safeguards protect against overheating, overcharging and short circuits while the charger runs. The design uses top-rated electronic components to reduce battery aging and extend the adapter's own lifespan. No moving parts mean silent operation in normal use.

Highlights

  • Charges compatible Lenovo laptops up to 50% in 40 minutes with 65W output
  • 10 ft combined cable length gives flexible placement at desk or outlet
  • Works with 65W and 45W USB-C Lenovo ThinkPad, Yoga, Chromebook and IdeaPad models
  • Built-in safeguards protect against overcharging, short circuit and overheating
  • Weighs 6.7 ounces for easy transport in a laptop bag

Specifications

BrandT ATHINK
ModelTJ-180
Battery Voltage20V
Battery Capacity20 volts
AC Adapter Voltage20V
AC Adapter Current3.25 amps
AC Adapter Output Power65W
FeaturesUSB Type C, Corded Electric, 0, type_c_2pin_eu, 20 volts, 3.25 amps
FunctionLenovo ThinkPad A275 A285 A475 A485 / E480 E485 E490 E490S E495 E580 E585 E590 E595 E14 E15 E16 / L13 L14 L15 L380 L390 L480 L490 L580 L590 / P51S P52s P53s P43s P14s P15s P16s / X270 X280 X380 X390 X395 13 13s X12 X13 X9 15 X9 14/ 13W C13 C14 K14 S1 V14 V15 V17 Z13 V320 Y520 T470 T470S T480 T480S T490 T490s T495 T495s T570 T580 T580 T580s T590 T14 T14s T15 T16 / R480 R490 R590 / X1 Carbon 5th 6th 7th 8th 9th 10th 11th / X1 Tablet 1st 2nd 3rd Gen / X1 Yoga 2nd 3rd 4th 5th 6th 7th 8th / X1 Fold / X1 Nano / X1 Titanium, Lenovo Yoga 370 380 720 730 720-13 730-13 730s 730s-13 910 920 910
Dimension25 in
Weight6.7 ounces

Questions about this item

Does the 65W USB-C adapter run hot or make noise during all-day charging?

The 65W adapter uses a built-in cooling system and premium copper wire core to manage heat, and the solid metal plug avoids loose connections that can cause buzzing.

What must my laptop already have for this 20V 3.25A charger to work?

Your laptop needs a USB-C port that accepts 20V 3.25A (65W) Power Delivery; the charger also supports 20V 2.25A and 15V 3A profiles for 45W models.

Will this 65W charger work with my older ThinkPad X1 Carbon 7th Gen and a newer Yoga 9i?

Yes, the adapter lists both the X1 Carbon 7th Gen and Yoga 9i among its compatible models and delivers the required 20V 3.25A for each.

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