Recently I bought a PS4 Pro with 2 controllers, just in case if the first controller break or stop working for no reason. Now if I wanna keep the second controller healthy for months or even years (without using it) how should it be? Charged or empty? Any other tips & hints towards controller maintenance would be appreciated too (I'm new to controllers, I was a PC player prior to this)

guys it is worth it to buy PS4 PRO for 145 dollar in my country around 8500 pesos. as a person that never had a playstation console? is it worth it?