So you are tired of dead batteries on your drill and do not want to mess around with replacing or fixing the battery.  Make the cordless sucker a corded drill.  Lots of people seem to think this is a good idea, so here is a guide to this technique.  If you have an instructable on this topic and I have missed it please let me know.  If you do want to fix the battery see the guide Cordless Drill Battery Maintenance .
It has been awhile since a new add a cord instructable has appeared, but here is one. A bit of different twist on the job.
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Here a drill and related tools are all adapted to external power.
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Here the power supply is rebuilt in the battery case.
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