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Compaq Presario CQ45 Power Adapter
The Compaq Presario CQ45 AC adapter has two main uses, to charge up the main battery and to provide a source of power for the unit. Upon choosing a replacement adapter, selecting the Compaq OEM charger is usually going to be the safest choice. A universal AC adapter can be used if yours is unavailable or backordered. Due to the fact that one Compaq adapter powers multiple other machines, be sure you choose the right one. If you decide to buy an non-Compaq adapter, please check on both the volts and amps outputs.
Important clues of a defective power adapter
- Your Compaq battery refuses to charge whatsoever
- Most Compaq adapters get warm when they are plugged in for a period of time
- The laptop does not function using just the AC power adapter
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