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 (F2) connecting to the second bladder ; a drain valve (D1) 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 (F2) connecting to the second bladder ; a drain valve (D1) 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 (F2) connecting to the second bladder ; a drain valve (D1) 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 . <EOS>