Black and Decker 9074 Type 4 Battery Replacement
This will show how to replace the battery for the Black & Decker 3.6V screwdriver 9074 type 4
Repairing Black and Decker 9074 Screwdriver Battery
This is an older electric screwdriver. The battery part number 148412-00 is obsolete and no longer manufactured. The few that I did find are in excess of $30. I decided to take a look and if possible build my own.