It is in my lease that tenant must replace filters and batteries in smoke alarms.  

I see storage facilities of all types around here from boats and rv's parked in a wide open (fenced) grass pasture, to a professionally built facility with units ranging from open, to covered, to enclosed and locked with 50amp outlets for batteries and water hookups.

I have a house I'm listing for sale and the seller is a friend of a friend.  His cat, however, is no friend of mine.My client has gone nose-blind to the horrific smell.  When I say "smell", I mean "stench of ammonia a...

The big thing is they always check the smoke and CO2 detectors so always have the batteries replaced and have some batteries (and a step ladder) on-hand just in case. 

They seem to integrate with more things and are better supported overall.Also, that 9v battery seems to last forever.

Mine has not flooded but I have 2 sump pits with 3 pumps, 2 of which are backed up by a natural gas powered generator with an automatic transfer switch and one pump which is a battery only. 

Sorry the batteries went out in my key board2. these properties come as surplus tax sale abandon  like Morris invest clients got roped into.3. foreclosures4. foreclosures of landlords who just got sick of the tenants and walked away5. homeowners who realize the house is not worth much and walk away6. burnt out landlords who have had enough and just sell to get out of them.the houses in many markets and a lot of indy these are 50 to 100 year old homes.. they have been cycled and cycled and cycled.. 

You normally charge rent for the real beds in the real bedrooms, and there is an extra bed or two in every house that you don't charge for if the real beds are all paying money. 

Its all batteries, no wires and works great.

It uses 4 AA batteries to run it.