How about smoke detector batteries.

We did inspections every 6 months, and told the tenants we'd be checking plumbing for leaks, and checking smoke detector batteries.  

We now install the ones that have 10 year lithium batteries.

Do inspections every 6 months, but just put on the notice of entry that you will be entering to check smoke detector batteries and check for any plumbing leaks, and to please let you know ahead of time if there are any other maintenance issues you should look at while you're there. 

(Tenants would probably freak if the PM started taking photos inside the home.)It's normal to do an inspection twice a year, where the tenant is informed they will be checking smoke detector batteries and for plumbing leaks and to inquire of any other maintenance issues the tenant has. 

We did inspections every 6 months (26 unit building), and would check smoke detector batteries as well as look for leaks or running toilets.And if the water bill went up significantly, we'd do additional inspections, looking for the inevitable running toilet.Next best option is to use month to month agreements, so if you suspect a unit is going crazy with the utilities, you can get rid of that tenant.  

Fuel with 4amp/hr battery will last longer than the sears impact driver itself.

What you should be fearing is the reality of what could happen:Say you forget to check the smoke detectors, or forget to put them up in all the bedrooms, or years go by and the battery dies-- huge fire breaks out, destroys you place (if you don't have insurance, it would be a total loss!)  

Sec 8 is probably willing to pay $850 for it (all cold flat prices), but I'm sure it would need some reconditioning, should he leave. 

If you start doing things like this, you’ll be receiving calls for a plugged toilet, replacing batteries at 3 am in a smoke alarm, a noisy neighbor, etc.