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Lenovo ThinkPad 770 Power Adapter
The Lenovo ThinkPad 770 power adapter is responsible for two things, to charge the onboard battery while simultaneously providing power for the laptop. Because Lenovo has been known to use a single AC adapter that powers multiple other machines, be certain you select the correct one for the ThinkPad 770 model. A universal AC adapter is another possibility but only if necessary. If buying off-brand, make note of both the volts and amps outputs. When purchasing a replacement charger, choosing the Lenovo brand one is usually going to be the safest choice.
Major clues of a worsening AC adapter
- Your Lenovo battery refuses to charge up at all
- Most Lenovo adapters get warm when plugged in for any length of time
- The laptop does not function without the battery installed
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