An apparatus for charging a zinc-air cell or zinc-air battery, said apparatus comprising: • a reservoir, said reservoir comprising: o an alkaline electrolyte fluid containing dissolved zinc oxide; and o solid phase zinc oxide; • an export feed operationally connected to said reservoir; • a fluid drainer; • a charger, wherein said charger is operationally connectible to said zinc-air cell or zinc-air battery; and • optionally a second discharge reservoir; whereby: • said apparatus is operationally connectible to said zinc-air cell or zinc- air battery for which charging is desired; • said reservoir of said apparatus is located externally to a device containing a zinc-air cell or zinc-air battery for which charging is desired and said export feed allows for the delivery of said electrolyte fluid from said reservoir to said zinc-air cell or zinc-air battery for which charging is desired; • said fluid drainer is operationally connectible to said device containing said zinc-air cell or zinc-air battery and facilitates draining of at least a portion of an electrolyte fluid located in a discharged or not fully charged zinc-air cell or zinc-air battery in said device; • said drained electrolyte fluid is conveyed to said reservoir or optionally said drained electrolyte fluid is conveyed to said second discharge reservoir; and • said charger applies current to said zinc-air cell; wherein said zinc-air cell or zinc- air battery comprises a porous structure anode. • a reservoir, said reservoir comprising: o an alkaline electrolyte fluid containing dissolved zinc oxide; and o solid phase zinc oxide; o an alkaline electrolyte fluid containing dissolved zinc oxide; and o solid phase zinc oxide; • an export feed operationally connected to said reservoir; • a fluid drainer; • a charger, wherein said charger is operationally connectible to said zinc-air cell or zinc-air battery; and • optionally a second discharge reservoir; whereby: • said apparatus is operationally connectible to said zinc-air cell or zinc- air battery for which charging is desired; • said reservoir of said apparatus is located externally to a device containing a zinc-air cell or zinc-air battery for which charging is desired and said export feed allows for the delivery of said electrolyte fluid from said reservoir to said zinc-air cell or zinc-air battery for which charging is desired; • said fluid drainer is operationally connectible to said device containing said zinc-air cell or zinc-air battery and facilitates draining of at least a portion of an electrolyte fluid located in a discharged or not fully charged zinc-air cell or zinc-air battery in said device; • said drained electrolyte fluid is conveyed to said reservoir or optionally said drained electrolyte fluid is conveyed to said second discharge reservoir; and • said charger applies current to said zinc-air cell; wherein said zinc-air cell or zinc- air battery comprises a porous structure anode. • said apparatus is operationally connectible to said zinc-air cell or zinc- air battery for which charging is desired; • said reservoir of said apparatus is located externally to a device containing a zinc-air cell or zinc-air battery for which charging is desired and said export feed allows for the delivery of said electrolyte fluid from said reservoir to said zinc-air cell or zinc-air battery for which charging is desired; • said fluid drainer is operationally connectible to said device containing said zinc-air cell or zinc-air battery and facilitates draining of at least a portion of an electrolyte fluid located in a discharged or not fully charged zinc-air cell or zinc-air battery in said device; • said drained electrolyte fluid is conveyed to said reservoir or optionally said drained electrolyte fluid is conveyed to said second discharge reservoir; and • said charger applies current to said zinc-air cell;