Originally posted by Kho King
I can't remember the humidity for leather (lower than 40% if I am not mistaken), but it is adviceable to store your leather in drybox at lower humidity. Thus, 45-55% is ok for it...but lower better. So, no worry for that.
Battery I am not sure, but I don't feel like storing my battery inside the drybox, as inside the battery, it is semiliquid stuff (am I right?), thus don't want the drybox to dry it up. Please correct me if I am wrong.