Laptop DC(Auto) Adapter Usage Tips:

Never pull on the power cord to remove the plug from a socket. Always grasp the plug directly. Pulling on the cord can damage it, and/or result in a fire or serious electric shock.

Never place your DC(Auto) adapter near a heat source such as an electric blanket or heater. Be sure to place your adapter on a flat, hard surface that is resistant to heat damage.

Never bend or twist the power cord. Keep the power cord as straight as possible to help prevent the wires inside from becoming damaged.

Never place objects on the DC(Auto) adapter or power cord. This can damage the wires inside, as well as cause the DC(Auto) adapter to overheat and stop working. The DC(Auto) adapter should be well ventilated when used in the car.

Never run the power cord through a pinch point such as a door, a window, or between a desk and a wall. This can damage the wires inside.

Keep the DC(Auto) Adapters Clean.
It's a good idea to clean dirty adapter contacts with a cotton swab and alcohol. This helps maintain a good connection between the adapter and the laptops.
Do not subject the adapter to extreme pressure.
Do not immerse in water.
Do not attempt to open or break apart the adapter.
Do not throw the adapter in fire or attempt to burn it.
Do not use the adapter if it has been subjected to shock or damage; take it to qualified technician for inspection and repair.

Top reasons for adapters stop working:

Forgetting to unplug the adapter before moving the laptop.
Wrapping the power cord around the DC(Auto) adapter.
Repeatedly bending the DC(Auto) adapter or power cord.
Pets chewing on the cords.

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