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Lenovo ThinkPad L421 Power Adapter
Upon choosing a replacement adapter, selecting the Lenovo OEM charger is usually going to be the safest choice. If your decision is to purchase a different brand charger, make note of both the voltage and amperage output. The Lenovo ThinkPad L421 power adapter has two main uses, to charge the onboard battery and powering the laptop. Because Lenovo has been known to use a single AC adapter that is probably used on other similar units, be certain to thoroughly note the part number that is needed for this model. A universal AC adapter is another possibility if you absolutely need to.
What are the indications that my power adapter really needs to be replaced?
- The unit will not work using just the AC power adapter
- Battery does not charge all the time
- Most Lenovo adapters can get quite warm when plugged in for 10 minutes or more
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A Lenovo ThinkPad L421 power adapter is best purchased brand new due to the wear on an old used power adapter. Try to always get replacement parts from a known seller if you buy anything online. Your Lenovo laptop will be happier for buying smart. Always make sure to make note of the OEM part number so you order the correct power adapter replacement.
Feel free to download your manual for help.
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