Last night a powerful thunderstorm blasted the city with a phenomenal downpour, lightning strikes and lots of wind. The power went out for about an hour and a half and it represented the typical summer power outage around here: storm leads to power loss for 10 minutes up to several hours.
Your freezers and fridges should be okay for an hour and a half and you can
get by with flashlights if it happens to be dark; but what about your sump
If the outage is caused by a storm, you are likely to get a lot of water pouring into your sump when the power is out. To deal with that, I installed a backup battery powered sump pump. It is a Flotec and uses a deep cycle battery to power a 12 V DC pump. You can see the backup pump on the right. You can see the water squirting out of the weeping hole.
To be prepared for power outages lasting several hours, I keep an extra car battery in the garage and keep it charged. If the deep cycle battery in the backup pump is exhausted, I can hook up the car battery.
My sump pumps last about 2 years, they usually die when the pump house bolts break from being rusted, and water rushes into the electric motor part of the pump. I keep a new pump right next to the sump to replace it when the old one breaks; I also have a portable sewage pump for emergencies and a dehumidifier that can dry out any rooms that get wet.
Yes, I'm clearly over-prepared for water issues in my basement. I have had two of those emergencies and I don't want any more!