Charge the battery if the cordless vacuum will not turn on or operate properly. Wipe the contacts with a dry cloth between the battery and charging base before charging to remove dirt that could affect the battery charging correctly.
Do not store unit with the charging adapter attached. Do not use the hand vacuum cleaner. Cordless vacuum is shipped with the batteries uncharged.
A Shark Bagless Navigator Freestyle Cordless review will not answer these 28. How long does the battery last before you need to charge it and how llong does .