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Apple MacBook Pro MD104LL-A Power Adapter
If you decide to buy an non-Apple adapter, make note of both the volts and amps outputs. Upon choosing a replacement AC charger, the actual Apple brand is always going to be the safest and easiest way to go. Because Apple has been known to use a single AC adapter that is probably used on other similar units, make sure you check the part number for the correct one. The Apple MacBook Pro MD104LL-A power adapter is needed for two reasons, to charge the onboard battery and powering the laptop. A universal AC adapter is a possibility if yours is unavailable or backordered.
Main clues your laptop charger will die soon
- Battery does not charge up every time
- Most Apple adapters can get quite warm when they are plugged in for a period of time
- The unit will not run while solely using the AC adapter
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