It's not the answer you want, but do you really require a 30+ character password? If what you're protecting is that secure you shouldn't probably risk communicating through a device made by a Japanese owned Canadian based company with only regular security protocols...
Perhaps Google only allows short term cookies for passwords, or likely not at all for passwords. It seems to me I have to type mine in all the time and it's only 13 characters with some numerals thrown in.