Then, schedule an inspection in a month or so saying you need to check the smoke detector batteries and check for plumbing leaks. 

And an additional $3,000+ if they are seniors or disabled.http://www.sfrb.org/Modules/ShowDocument.aspx?

I did have fans going using my car battery as a power source and I even have a house with raised ceilings...built before a/c existed...and the heat was still unrelenting. 

The batteries last years in most cases and I have not had any break down issues.

Retailers have until July 1, 2015 to meet the requirement for stocking only sealed-in, long-life battery smoke alarms.'

Prior to my tenants moving in, I give them a welcome letter which also has the following information:- Copies of their lease agreement, and any other addendums they signed- The names and phone numbers to call to start utility service- Information on watering days (if applicable, because some of my properties are located in areas that can only be watered on certain days/times) and trash pickup days- Information on gardening service (if provided/applicable, I tell them who will be coming and on what days)- Location of furnace filters, size of replacements, and recommended changing intervals- Nearest schools- Information on renters insurance (I don't require it, but I give them info on it in case they choose to get it)- Location of the smoke detectors and carbon monoxide detectors, along with recommended changing intervals for the batteries- Any other unique information about the specific property/neighborhood itself that I feel is important for them to knowI also provide them USPS address change cards for their convenience since I figure they'll have a lot to be worrying about during their move.As far as the water heaters go, I don't really want them messing with it after I set it so I don't provide any specific information on it.

Also, I used to run the Skype app on my iPhone 4S and it really drained my battery towards the end of the day, so that's a concern too.  

Go ahead and post your notice to enter to check the smoke detector batteries, then enter.Why don't you try calling or texting them to ask what's going on?

If the inspector knows you and trusts you they will often let things slide with a promise that you'll be right back with that battery or they'll offer to swing back by in an hour or two to check that you found a drain pan and pass you. 

Look at the grid as a giant battery.