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Acer Extensa 4420 Power Adapter
The Acer Extensa 4420 power adapter is needed for two reasons, charging the battery and powering the laptop. When choosing a new AC charger, the actual Acer brand is usually going to be the safest choice. A universal AC adapter is another possibility if you are desperate. If your decision is to purchase a different brand charger, make sure to check both the voltage and amperage output. Because Acer uses one power charger that is probably used on other similar units, double-check the part number or model number of the adapter.
Signs your AC adapter is failing
- The majority of Acer power chargers will get very warm to the touch when they are plugged in for a period of time
- Your Acer battery refuses to charge up at all
- The unit will not run while just using AC power
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