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My EI Systems laptopwill charge the battery when on ac power but when i unplug from the mains it switchs off even though there is charge in the batteries

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Try leaving on overnight
to charge battery
else may need new ac charger
I know hp chargers only last 2 years of hard use
cheers

Posted on Sep 16, 2010

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It's time for you to replace your battery.

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It cannot switched the batteries. The backup one is a small internal battery just to keep the CMOS with data. That's it.

If you main battery is not charging or when unplugged won't power on, the is likely the main battery is defective, or the charging circuitry of it is failing.

Best regards,

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