Replacement for Lenovo ThinkPad E40 AC Adapter Power Supply

Lenovo ThinkPad E40 Battery Replaecement

90 Watt, 20V 4.5A Lenovo ThinkPad E40 Power Adapter

This 90W Lenovo ThinkPad E40 AC Power Adapter can provide continuous power to your laptop/notebook computer and charge the Lenovo ThinkPad E40 battery from AC power source such as electrical plugs on the wall. Comes with FREE Lenovo ThinkPad E40 power cord, 1 year warranty.

  • Power:
  • 90W
  • Input:
  • AC 100~240V 50~60Hz
  • Output:
  • DC 20V 4.5A
  • Connector:
  • 7.9 * 5.5mm
  • Item Includes:
  • AC Adapter and Power Cord
  • Humidity:
  • 5% ~ 95%RH (non-condensing)
  • List Price: US $31.82
  • Your Price: US $16.99
  • Please enter the recipient's phone number:
  • Quality Assurance, 1 Year Warranty, 30 Days Money Back!

Product Description

The laptop power adapter is guaranteed to work with your LENOVO ThinkPad E40 laptop when you see your adapter's OEM part number (printed on the adapter label) or laptop model number in our compatible list. The list might be incomplete because it is difficult to collect all information at one time. If you are not sure of your choice, please type the part number and model number as special comment in our shipping form at the time of checkout. We will ship you the correct LENOVO ThinkPad E40 adapter based on your input. or you can click here to tell us your part# or models#.

Fit Following Machine Models:

Lenovo ThinkPad E40, Lenovo ThinkPad E50, Lenovo ThinkPad Edge 0578-47B, Lenovo ThinkPad Edge 14", Lenovo ThinkPad Edge 14" 05787UJ, Lenovo ThinkPad Edge 14" 05787VJ, Lenovo ThinkPad Edge 14" 05787WJ, Lenovo ThinkPad Edge 14" 05787XJ, Lenovo ThinkPad Edge 14" 05787YJ, Lenovo ThinkPad Edge 14" 0578F7U, Lenovo ThinkPad Edge 15", Lenovo ThinkPad Edge E420, Lenovo ThinkPad Edge E425, Lenovo ThinkPad Edge E520, Lenovo ThinkPad Edge E525, Lenovo ThinkPad L410, Lenovo ThinkPad L412, Lenovo ThinkPad L420, Lenovo ThinkPad L421, Lenovo ThinkPad L510, Lenovo ThinkPad L512, Lenovo ThinkPad L520, Lenovo ThinkPad SL410 2842, Lenovo ThinkPad SL410 2874, Lenovo ThinkPad SL410 series, Lenovo ThinkPad SL410k 2842, Lenovo ThinkPad SL510 2847, Lenovo ThinkPad SL510 2875, Lenovo ThinkPad SL510 series, Lenovo ThinkPad T410, Lenovo ThinkPad T410i, Lenovo ThinkPad T420, Lenovo ThinkPad T510, Lenovo ThinkPad T510i, Lenovo ThinkPad T520, Lenovo ThinkPad T520i, Lenovo ThinkPad W510, Lenovo ThinkPad W520

Product Features:

  • Over Voltage Protection (1500V/AC). Short Circuit Protection. Over Temperature Protection
  • Wide input Voltage range, could stable work under 90v-264v
  • High Power exchange efficiency to control working temperature and stable working.
  • Power Exchange Savings more than %88 (More power exchange savings means less power wasting and working more efficient)
  • PCB & Cover is manufactured with Fireproofing materials.
  • Low Ripple and Noise. High Quality Raw Materials.
  • Brand New Replacement LENOVO ThinkPad E40 AC adapter, works as genuine parts, 100% OEM Compatible!!

Laptop AC Adapter Usage Tips:

Ever been on a long flight, ready to hunker down and get some work done, only to discover that your LENOVO ThinkPad E40 Adapter is plunging toward the red zone an hour after takeoff? So have we. That's why we've gathered these simple tips that will preserve your notebook's juice and boost your productivity. Read them now. You'll thank yourself later.

  1. Sleep Is Good. Use the operating system's power-management features (in Windows XP, under Power Options in the Control Panel; or in Vista, under Mobile PC in the Control Panel) to set aggressive targets for when the display will go dark and when the machine will slip into sleep mode. And if you can spare the extra time it takes for the machine to resume, set the PC to hibernate, not just sleep, when you close the lid.
  2. Dim the Lights. Turn down the brightness of the LCD panel to the lowest level you can tolerate. The backlight sucks power like the Rockefeller Center Christmas tree.
  3. Watch Scheduled Tasks. Be sure that your periodic virus scan is set to a time when you're usually plugged in; running a full-disk virus check keeps the hard drive and CPU fully engaged for the better part of an hour
  4. For lithium ion LENOVO ThinkPad E40 laptop AC adapter, you do not need to discharge them fully and recharge constantly. Since they don't have the same "memory" as older nickel-metal hydride LENOVO ThinkPad E40 AC adapater, it is actually better to discharge a lithium ion only partially before recharging. You need to do a full discharge only about every 30 charges.
  5. Lay Off the Multimedia. A little in-flight music is nice while you construct that PowerPoint presentation, but streaming music from your hard drive means the disk is always spinning.