I welded the middle 3 point hitch with 3 car batteries, some jumper cables, vice grip pliers and 1/8" 6014 welding rods.

@Jessie TetreaultInteresting thought about the key pads, but I thought all of them have a physical lock as well to be used as a backup in case the battery dies in the keypad? 

I used a commercial-style Diakin cassette system in a finished lower level renovation of a house on the Battery with good results, but it was a situation where a ducted system was simply not an option.  

The only challenge is replacing batteries, but I schedule it for once a year along with my smoke detectors. 

Hi BP, I'm looking to charge my motivational battery and was looking for any investors who has closed 5 deals or more.

Home Depot now sells Smoke Detectors with 10 year internal batteries that can't be changed.  

Sometimes she changes light bulbs and replaces batteries in remotes and thermostats. 

Did it need updated smoke detectors and are you using 10 year life battery detectors or 9v battery operated?  

It might not have addressed your past issues, but I now put $10 battery water alarms next to the washing machine, water heater and under the sink.

My PM's contractor gave us an estimate of things to be repaired and it includes things like $50 for replacing smoke detector batteries, $50 for repairing shower handle, $60 for caulking tub, $200 for changing locks.