Black & Decker Measuring Tools & Sensors - Page 2 - Recent Questions, Troubleshooting & Support

The manual is here... http://www.blackanddecker.com/power-tools/BDL170.aspx

20 minutes. If pack is Nickle-cadmium.it will be warm to the touch when fully charged.

While holding the stud finder on a spot on the wall where you assume there is no stud... press the button and hold and stay still for 10 or 15 seconds to calibrate. Then while still pressing the button start sliding sideways until the lights indicate the thickest point. You can use a pencil to mark the beginning and end. The center of that is the center of the stud. Measure 3/4 of an inch left and right of it to know it's sides.

Asuming it is the right connection, you have to check the polarity and a page is correct, then yes

http://servicenet.blackanddecker.com/Products/Detail?productNumber=BDSM100#

http://www.blackanddecker.com/Manuals.aspx

If you have the PS130 12v Battery, and the one-hour rapid charger from Black and Decker, then, in theory, it should only take an hour to charge the battery (according to them). However, I would leave the battery on charge for at least several hours to guarantee a full charge each time. That battery is a NiCad cell battery, and these typically take longer to reach a full capacity charge. So give it a few hours at least, but it probably wont hurt it if you left the battery on charge even overnight either... But don't let them charge for longer than 18 hours maximum!