Acer laptop power supply voltage

Acer Aspire 4315 ac adapter - 19v - 90w...
July 6, 2010 at 13:25:08
Specs: Windows XP, Celeron 2GHz 2G Ram
I have a Acer laptop, will power up and operate with battery removed, hooked to just the power adaptor.
I plug in the batttery, connect the powe supply, say's
"Warning. battery critically low" I checked the voltage output of the adaptor, it's 15.2 VDC. The specs call for 19VDC Yet it works with the battery removed. Any ideas anyone?

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July 6, 2010 at 13:59:52
The specs call for 19V and you are feeding it 15.3v it is little wonder there is a problem.

When you put a flat battery in with the computer on the powers supply has to supply both the battery and the computer. It obviously cant do both a the same time. Try leaving the battery in for a few hours with the computer turned off so the power supply only has to supply the battery.

Besides the voltage, what is the amperage of the power supply compared to what is required. That is likely to be more critical than the voltage.


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July 6, 2010 at 16:41:16
Calls for 3.42A, the power supply claims 5.2Amps. Its one of those Universal power supplies, can source 15,18.5, 19.5, or 22 Volts selected by a switch. I just checked and the switch doesn't work, it always sources 15.2V not matter what the switch is set at. Guess I need a new power supply.

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July 6, 2010 at 18:55:44
If you don't need the battery then leave it out and forget about it.

I support the 'Everybody Draw Mohammed Day'. A religion doesn't deny my freedom.

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