How long does the battery last on the FLEXiO 3550 18V Cordless sprayer?

The battery life depends on the project and the coating you want to spray.

Some examples of battery life are:

    Latex Paint-An 8ft by 16ft wall.  Stain-A 6ft fence by 40ft long.

    A fully charged battery will provide 7-15 minutes of continuous spraying at the highest air power setting.

Examples are approximate.