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converting a 9v dc adapter to 18.5? Answered

I just recently got a free laptop from a friend who's dad didn't need anymore, and it dosn't have a power cord to charge the battery. I'm dieing to turn it on and see if it works so if anyone knows who to convert a 9v dc adapter to 18.5 if it's even possible.

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erckgillis (author)2007-04-30

Vegas is correct, any old laptop or discarded AC to DC power supply with the CORRECT voltage and Amperage is required, order DC power pins and connectors and a little soldering then you got a new power supply. carefully...read the underside. It says 18.5v and 1 to 5 amps atr 40-90Watts? Find a similiar one, change the plug with parts from Mouser.com, Radio-Shack or any DC supply catalog. DC ONLY ...be sure as the Li batteries EXPLODE when overcharged or heated. E

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LasVegas (author)2007-04-23

You would need at least a 40w supply meaning that your 9v supply would have to supply at least 4.5 amps before considering it. If you have that, you could use a voltage doubler circuit able to support that much current. This wouldn't be very practical. It would better to simply purchase a replacement supply for your computer. There are many generic supplies that would suffice. Check Ebay.

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