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Lenovo IdeaPad S400U Power Adapter
Because Lenovo uses one power charger that powers multiple other machines, make sure you check the part number for the correct one. Upon choosing a replacement AC adapter, choosing the Lenovo brand one is usually going to be the safest choice. A universal power adapter is a possibility but only if necessary. The Lenovo IdeaPad S400U power adapter is needed for two reasons, to charge up the main battery while simultaneously providing power for the laptop. If your decision is to purchase a different brand charger, please check on both the volts and amps outputs.
Important clues of an ineffective power adapter
- Your Lenovo battery refuses to charge up at all
- The majority of Lenovo power chargers will get very warm to the touch when plugged in for any length of time
- The unit will not run while solely using the AC adapter
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