Kemo m148a battery guard total discharge protection module kemo m148a avoid the nuisance and damaging effects of a discharged car battery with the kemo m148a battery guard module the module cuts power to accessories if the battery voltage drops below the set minimum choose between 10 4v 11v 12v 13v 13 3v when regular voltage is restored i e when battery is recharged the power to accessoriess is re established kemo m148a battery guard module