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Lenovo ThinkPad T420i Power Adapter
When purchasing a replacement AC charger, the actual Lenovo brand is always going to be the safest and easiest way to go. Because Lenovo uses one power charger that is probably used on other similar units, be sure you choose the right one. If your decision is to purchase a different brand charger, make note of both the voltage and amperage output. A universal power adapter can be used if you absolutely need to. The Lenovo ThinkPad T420i AC adapter has two main uses, charging the battery while simultaneously providing power for the laptop.
Major indications of an ailing power adapter
- Most Lenovo AC adapters can get quite warm when plugged in for 10 minutes or more
- Your Lenovo battery refuses to charge whatsoever
- The laptop does not work without the battery installed
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Make sure to try and purchase electronic parts from a site you know if you purchase through a website. Lenovo ThinkPad T420i power adapter should be purchased in factory new condition due to the wear on any old power adapter that may occur. It is in your best interest to check and double-check the model number so you order the correct power adapter replacement. Your Lenovo laptop will love you more if you parts safely online!
Feel free to download your manual for help.
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