Viji are odd humanoids, clad in naturally occurring metal armor, that live on mountains. However, while their metal armor should protect them, Lightning striking full plate — what’s the damage to the wearer? makes me significantly concerned about its viability against lightning strikes.
And then I had a crazy idea: what if they were batteries? Voltaic piles are simple batteries, and from the research I've done so far, I believe you just need metal, acid, and salt to create a battery. All of those are in the human body, especially when that human is a Viji. Furthermore, thanks to their mountainous habitat and metal armor, they should be able to develop built-in batteries for additional lightning protection.
Cool. What kind of battery, bro?
Well, the battery is supposed to act as a sort of cushion-cushions absorb force, this is supposed to absorb electrical force-and this cushioning should, preferably, lead to a central core to store this electrical power.
This same biological battery should be able to not only store electrical energy, but be usable as a power source for the Viji possessing this organ (so the Viji can release electrical energy safely). In other words, this battery should be capable of charging up a Viji's plate armor (making it a biological electrical fence wrapped around the body), and to release electricity into the nerves or muscles (so Viji can exercise to burn off excess voltage).
So, my question is: Could Viji Effectively Develop and Use Biological Batteries?
This may look like two questions, but it really isn't: Viji can't feasibly use built-in biological batteries to absorb electrical force unless they develop those biological batteries inside their own bodies. Therefore, in order for this to work, Viji must be able to naturally develop (ie. develop through natural selection) these their own, built-in biological batteries and these batteries must be effective for absorbing electrical force in order to prevent it from reaching vital organs.
I understand that technically, batteries don't store electrical energy, they store chemicals. Capacitors are what actually store electricity, but I'm not sure a biological capacitor is feasible.