An aerial drone system comprising: an aerial drone comprising: a metal air battery; a heat exchanger; an array of sensors for detecting a receptacle; a first electrolyte tank comprising a first bladder with a first inlet valve (IN-A) and a first outlet valve (OUT-A) and a second bladder with a second inlet valve (IN-B) and a second outlet valve (OUT-B), the first bladder and the second bladder being separated by a flexible membrane; a probe that is fluidly connected to the first electrolyte tank, the probe comprising: a fill port selectively connected to either a first fill valve (Fl) connecting to the first bladder or a second fill valve connecting to the second bladder; a drain valve for selectively connecting to either the first bladder or the second bladder through a common drain line; an electrolyte pump fluidly connected to the metal air battery, the heat exchanger, the common drain line and selectively connected to either the first bladder or the second bladder through the first inlet valve (IN-A) or the second inlet valve (IN-B), respectively; and a rapid electrolyte replenishment system comprising: a receptacle for receiving the probe, the receptacle comprising an aperture for receiving the fill port; at least one drain hole for receiving electrolyte from the drain valve (D 1); a feed pump for pumping electrolyte from a second electrolyte tank to the aperture; a vacuum pump for pumping electrolyte from the at least one drain hole to an electrolyte storage tank. a metal air battery; a heat exchanger; an array of sensors for detecting a receptacle; a first electrolyte tank comprising a first bladder with a first inlet valve (IN-A) and a first outlet valve (OUT-A) and a second bladder with a second inlet valve (IN-B) and a second outlet valve (OUT-B), the first bladder and the second bladder being separated by a flexible membrane; a probe that is fluidly connected to the first electrolyte tank, the probe comprising: a fill port selectively connected to either a first fill valve (Fl) connecting to the first bladder or a second fill valve connecting to the second bladder; a drain valve for selectively connecting to either the first bladder or the second bladder through a common drain line; a fill port selectively connected to either a first fill valve (Fl) connecting to the first bladder or a second fill valve connecting to the second bladder; a drain valve for selectively connecting to either the first bladder or the second bladder through a common drain line; an electrolyte pump fluidly connected to the metal air battery, the heat exchanger, the common drain line and selectively connected to either the first bladder or the second bladder through the first inlet valve (IN-A) or the second inlet valve (IN-B), respectively; and a rapid electrolyte replenishment system comprising: a receptacle for receiving the probe, the receptacle comprising an aperture for receiving the fill port; at least one drain hole for receiving electrolyte from the drain valve (D 1); a feed pump for pumping electrolyte from a second electrolyte tank to the aperture; a vacuum pump for pumping electrolyte from the at least one drain hole to an electrolyte storage tank. a receptacle for receiving the probe, the receptacle comprising an aperture for receiving the fill port; at least one drain hole for receiving electrolyte from the drain valve (D 1); a feed pump for pumping electrolyte from a second electrolyte tank to the aperture; a vacuum pump for pumping electrolyte from the at least one drain hole to an electrolyte storage tank.