How do I hack my Dell Latitude D620 to work properly with non Dell chargers?

Many Dell AC adapters use the Dallas (Maxim) one wire protocol to tell the computer their specifications. You could use the same one wire EPROM that Dell uses, or program a microcontroller to serve the same purpose. Most universal AC adapters do not support the one wire protocol.

Many of the clones of Dell adapters do have the one wire chip and will work just like a genuine Dell adapter.

Many Dell models have recently updated the BIOSes allowing nonOEM adapters to charge the battery. You don't get all the annoying wranings either. I think they got hit with a lawsuit.

I know some models slightly newer than yours were affected, probably worth a try.

A quick search leads me to believe that this laptop takes a bog-standard ac-dc adapter. Before you take the time to a. Pull out the soldering iron and wick b.

Download the service manual from support.dell.com/support/edocs/systems/l... c. Hack together some elegant solution in 20 man-hours Ask yourself: Why don't I just buy another adapter on eBay?

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