Originally Posted by us71na
I use the screw post terminals and have a wing nut on the positive post so I can remove the leads without tools. Plus the battery compartment is plastic so nothing to contact to produce a short.
It's just a carryover from automotive work. Where the battery is in the engine bay, the connectors are lumps of lead, the fasteners use a 1/2" wrench and there is grounded metal everywhere!
An excellent habit to get into was disconnect the ground lead first. (Positive on certain non-compliant manufacturers.)
When all of the surroundings are plastic, it doesn't matter which side you disconnect. Personally, I'd choose the side with the fewest wires to have to reconnect.