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Lenovo IdeaPad S400 Power Adapter
Because Lenovo uses one power charger that can be used on other units, be certain to thoroughly note the part number that is needed for this model. If your decision is to purchase a different brand charger, it is imperative to note the output of amps and voltage. A universal power adapter can be used but only if necessary. The Lenovo IdeaPad S400 power adapter is needed for two reasons, to charge any and all batteries and to provide a source of power for the unit. Upon choosing a replacement AC charger, the actual Lenovo brand is usually going to be the safest choice.
Warnings of a weak AC adapter
- Battery does not charge up all the time
- Most Lenovo adapters will get warm to the touch when plugged in for any length of time
- The unit will not operate while just using AC power
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