Question about Dell Latitude D520 Battery PC Notebook

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Dell laptop beeping even when switched off. Battery and mains are both out. Beeps twice every 30 seconds.

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Sounds like it telling you the cmos battery is running out. You have all batteries removed and no power to the laptop? Then the only other thing providing power is the cmos battery.

Posted on Oct 18, 2013

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Hello:

1. - Take apart the battery (below, generally, the Laptop has two locks, pull them out and the battery will be unfastened).

2. - Disconnect the power source cable.

3. - Switch on power button, holding the power button during 15 - 30 seconds.

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