When your Swiffer Sweeper Vac or Dirt Devil Swiffer Sweeper just can’t make it around the whole house before getting weak or stopping, it’s time for a replacement battery pack! We offer a battery replacement so that you don’t have to add your old Sweeper Vac to a landfill!Click to see full answer. Also to know is, how do you change the batteries on a Swiffer? Insert batteries. Your Swiffer will generally require 4 AA batteries. To remove the battery panel, click the notch inside the area that holds the cleaning supply. Open the cover and insert the batteries.Furthermore, why is my Swiffer WetJet not spraying? After trying all of the other suggestions to get my Swiffer Wet Jet working again, i.e.: change batteries, make sure batteries are in properly with the door closed all the way, clean spray openings, clean off battery acid if batteries were corroded, etc., I watched a YouTube video. Re-install the batteries. Also know, how long does Swiffer Vac battery last? When purchased new, the Swiffer SweeperVac can operate on battery power for approximately 10-12 minutes after 16 hours of charging. Ensure you are charging it for at least 12 hours to maintain optimal battery life.Where is the battery for Swiffer Wet Jet?You have to remove the swifter cleaner, and the battery panel is behind there. Remove the panel and change the batteries. The batteries are in the top of a swiffer in a compartment 4 aa it takes.It is behind the water tank.