These safety instructions must be read carefully and fully understood before attempting to use your Laptop ac adapter.
1.Your LENOVO ThinkPad L420 Laptop Charger may not power your Laptop due to a loose connector. Make sure all connectors are inserted correctly. Also, check the adapter box. High Power LENOVO ThinkPad L420 Adapter often have an LED light that lights up when your adapter is powering your Laptop . If this light is off, then your Laptop is not receiving any power.
2.Make sure nothing is resting on your power cable such as a book, Laptop bag, or anything else that could pinch the adapter cable. If nothing is bending the cable, check the cable itself. The constant bending from storing your adapter could have exposed the wires within the adapter cable. This exposure can cause it to stop functioning properly.
3.If you find that your Cheap LENOVO ThinkPad L420 AC Adapter is no longer working, there are a few options for replacing it. The first option is to order the same or a similar compatible adapter.
4. An ThinkPad L420 Laptop Adapter secondary function is to charge a computer battery. A full charging session takes around two hours or longer if you use the computer during that time. If the battery is completely dead, you may need to leave the adapter plugged in for a few minutes before you turn on the computer.
5. Avoid exposing LENOVO ThinkPad L420 Laptop Adapter to prolonged periods of extreme heat or cold. Doing so could damage the internal circuitry and prevent it from working. Always wrap up the AC cord tightly when traveling, and avoid any contact with other metallic devices, like coins, pens or paperclips. These could accidentally short-circuit the adapter by causing an connection of the positive an negative terminals, for example, when bouncing around in a bag.
6. While it is normal for ThinkPad L420 Laptop AC Adapter to get warm to the touch while plugged in, any other signs of trouble may require immediate action.
7. If your adapter is making a high pitch noise, replace it. If your adapter stops working completely, it may be a sign of a bad transformer or a wiring issue. If you fancy yourself an amateur repairman, keep in mind that it is generally a bad idea to open up the AC adapter for any reason.

+ New:A brand-new, unused, unopened, undamaged item in its original packaging.
+ High Quality:Have a complete engineering facility for adapter testing. This enable us to provide the most up-to-date in adapter testing for the most advanced portable consumer electronics products. We only sell quality products from quality suppliers.
+ Low Price:we offer LENOVO ThinkPad L420 adapters have been made of Safe and Powerful Cells.
+ 100% Guarantee:1 year warranty! 30 days money back!
+ Fast Shipping:Items will be shipped out in the following business days after you have checked out. It may take about 4 - 5 business days for delivery.
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a. Price - We offer discount LENOVO ThinkPad L420 Adapter at low price.
b. Condition - This adapter is Brand New, 100% OEM compatible!
c. Quality - 100% compatible with original LENOVO ThinkPad L420.
d. Construction - This adapter uses the highest quality cells.
e. Warranty - One year quality assurance for ac power adapter, 30 days money back.