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Lenovo ThinkPad T40P Power Adapter
Because Lenovo has been known to use a single AC adapter that is probably used on other similar units, be certain you select the correct one for the ThinkPad T40P model. When purchasing a replacement AC charger, choosing the Lenovo brand one is always going to be the safest and easiest way to go. The Lenovo ThinkPad T40P power adapter provides two functions, to charge the onboard battery and powering the laptop. A universal AC adapter is another possibility if yours is unavailable or backordered. If you decide to buy an non-Lenovo adapter, it is imperative to note the output of amps and voltage.
Key signs of a weak charger
- Battery does not charge up every time
- Most Lenovo adapters can get quite warm when plugged in for 10 minutes or more
- The unit will not work while solely using the AC adapter
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