From http://focusdesigns.com/design/ http://focusdesigns.com/design/ "Once the battery is completely drained the SBU continues to balance but will become stubb

From http://focusdesigns.com/design/ http://focusdesigns.com/design/ "Once the battery is completely drained the SBU continues to balance but will become stubbornly stationary and not obey your speed commands."