I've not installed one yet but when my battery backup pump goes, I am going to install this. https://www.angieslist.com/articles/why-you-should...I also plan to seal my basement before I finish it as a last line of defensehttps://www.radonseal.com/basement-waterproofing.h...I would ask 2-3 waterproofing basement companies to come out and give free quotes, and you can use this as an opportunity to pick their brain as well. 

This has a mechanical key, which is nice, just in case the battery dies.https://www.amazon.com/dp/B00T...

I know prices for solar, wind, batteries, etc. have come down tremendously over the last year, what about a green construction project like this? 

@Maya TorresStop by with a welcome package containing some batteries and felt stickies for furniture legs.

When they moved out I found they removed the batteries from all the smoke alarms.

Rest up a little, recharge the batteries, spend time doing something you enjoy. 

Battery, brakes, tires, and wipers in 7 years.

The A/C people came out ( I had authorized them to do the seasonal cleaning and maintenance as well at the same time).I got the bill for the regular maintenance..but on the bill was a charge for 20.00 for battery replacement in the thermostat.

They admitted they were cooking french fries and she is deaf although she fought me to have hearing service dogs that are tinier than my cats...why didn't they alert her to the smoke alarm which is electrically wired, not a battery powered one???

Tesla battery investor day 9.22.2020 !