Homemade NaOH battery?

Every summer i make my own soap for myself for the year, this year i ordered way too much Sodium Hydroxide and German pretzels are getting old. In my garage i found a working 350 watt DC to AC power inverter so i decided to use my extra NaOH as an electrolyte in a homemade battery to use with the inverter to get a couple working outlets if the power ever goes out. I realize this battery is going to have an epic number of cells to power this thing but i'm willing to give it a shot. Long story short i am asking if anyone has experience with something like this (using NaOH as electrolyte) and if so you could save me alot of research and experimentation if you could give me some data, ie which metals to use as anode/cathode or is copper and zinc from the old grade school potato batteries still optimal, what concentration of solution is optimal, what volume of liquid/distance between electrodes, optimal surface area of said electrodes, would i be better off with a series or parallel circuit to connect the cells, things like that. This may be my first time building a legit battery that makes usable amounts of power, but being a science major i am very familiar with the chemistry so no need to dumb down the nomenclature and DEFIANTLY keep the safety lectures on caustic solutions and electrical safety to yourself, I know my way around the stuff.