$1B renewable energy project expected to create 700 jobs in Caldwell, Hays countiesUndisclosed incentives approved for solar, battery facilities south of AustinMore jobs and economic expansion announced south of Austin, TX.  

So now we have it, a nation of batteries whose sole mission in life is to make money for other people, and that's why rent control legislation and other measure to curb the greed and cupidity of landlords who can't help themselves from "maximizing their income per tenant" are going in everywhere.

I've toured and it is rent ready so shouldn't have to do any repairs (maybe smoke detector batteries), appliances are brand new, mechanicals <5 years old. 

As a kid, I had a little handheld, battery-powered antenna TV with a 2" screen.

@Lee PradoAfter googling the course it seems that it’s not to expensive at $300 for the lessons... however the give you the titles of the 16 modules.

Ensure all smoke detectors are accounted for and have a working battery.

It's battery operated and you program a code. 

If you filled up with gas once this year, saving you $5,000 in gas (that's a LOT of miles you do to save that much in gas), you must spend a lot of time sitting by the side of the road with an extension lead waiting for the batteries to charge.

Even though I had a battery swap plan, I would get the inevitable call about a chirping alarm.  

Wireless and battery-free.