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Lenovo ThinkPad R50 Power Adapter
If you decide to buy an non-Lenovo adapter, make sure to check the output of amps and voltage. The Lenovo ThinkPad R50 AC adapter has two main uses, to charge any and all batteries and to provide a source of power for the unit. A universal AC adapter can be used if you are desperate. Upon choosing a replacement adapter, selecting the Lenovo OEM charger will probably be the safest way to go. Because Lenovo has been known to use a single AC adapter that is most likely used on other laptop models, make sure you check the part number for the correct one.
General warnings of a dying AC adapter
- The unit will not run using just the AC power adapter
- Battery does not charge at all
- Most Lenovo adapters get warm when plugged in for any length of time
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