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Lenovo ThinkPad T21 Power Adapter
Because Lenovo uses one power charger that is probably used on other similar units, double-check the part number or model number of the adapter. The Lenovo ThinkPad T21 power adapter is responsible for two things, to charge the onboard battery and to provide a source of power for the unit. If buying off-brand, make note of both the volts and amps outputs. When choosing a new charger, selecting the Lenovo OEM charger is the best one to choose. A universal power adapter can be used but only if necessary.
Clues to watch for in a bad power adapter
- The laptop does not operate while solely using the AC adapter
- Your Lenovo battery refuses to charge whatsoever
- Most Lenovo adapters will get very warm to the touch when plugged in for 10 minutes or more
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