Your SpeedPro Max vacuum comes with three settings: (1, 2 and Turbo). The recommended setting for normal daily use is 1 or 2.
The highest setting (Turbo) has a very high suction power and therefore consumes battery very fast. This setting is meant to be used only to clean very dirty patches, not for regular everyday use. For regular amounts of dust, your SpeedPro Max should be used in setting 1 or 2.