@Jerry CockerhamPaper: easily portable and quick to start/stop.No battery required.

I am looking at Ring Spotlight Cam with battery.

The con to this system is that the wireless sensors run on battery but you dont have to tear up a whole house to run tstat wires. 

I can see the advantage of sheer cutting tool with the multiple angles, I think I will add these to my tool bag. https://www.idealtruevalue.com...I also recently bought the below wet/dry vacuum, the tool has the capability to be 120V or be battery powered if power isn't available.

Of course, there are other openers for sale — electric countertop versions, battery-operated ones that can fit into a drawer — but as reviews show, they all come with their own set of drawbacks: dropping cans onto the counter, using more battery power than expected, just not working, and impossible to fix yourself.

The editor is now writing for the Atlanta module of Urbanize - https://urbanize.city/atlanta. 

Risk is modulated by you (for the most part - systemic risk is another bag of cats). 

Probably not battery operated but hard wired.

The modules are very informative. 

Electronic Lifts- disconnect the battery if leavingfor long term storage.K.