Hoover BLADE TBT3V3B1 User Manual page 7

Charging the battery
When the charger is connected, both the battery charging light on the back of the handheld and
battery indicator light on the handle will illuminate:
Red light - the vacuum is charging
The battery level gauge lights will illuminate in turn as the battery charges, until all four lights are
illuminated. Once fully charged, the gauge lights will go out and the central light will illuminate white.
If charging for the first time the initial charge time is 4 hours.
When the vacuum is in use the battery level gauge
lights will illuminate indicating how much charge is
remaining. When only one light remains illuminated the
central charging light and battery level indicator will
turn red indicating the battery is running low (<25%).
OPERATION
White light - the vacuum is charged
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