Basic DC System Question

[JWA]

Originally Posted by boywonder

Note the current reading....if the reading is less than an amp you can switch the meter to ma (milli-amp range) for a little more accuracy, although likely not required.

Also keep in mind most all DMM's have an internal 10 amp fuse in case the inline reading exceeds that current. Most I've used and tripped were a glass fuse type, no doubt varying with each meter's manufacturer. I keep extras in a bag that also holds my valued DMM, easy to find when/if needed.

[johnolden]

I put in a switch on the positive cable from the battery. I turn it off whenever the SMB is to be parked for an extended time. It solved the battery drain problem.