A:AnswerThe Notebook 9 Pro does have a 64 bit processor, but I cannot answer the battery life question. I have not used the Notebook using the battery mode. I have only used it plugged in. While plugged in, it does have an option to limit the battery charge so that the battery is not continuously charging. This extends the battery life. So far I am loving this computer. I have not gotten the fingerprint reader to recognize my fingerprint yet, but I usually use the PIN login.
A:AnswerNope. It has a good deal of memory. Just remember it is an I7. Even if you can, break in to the unit and un-solder the memory, and drive the chips, it will get extremely hot and reduce the life of the computer. Not recommended.
A:AnswerComes with, and uses, AAAA batteries.
Something else to consider, it doesn't have regular USB ports, only USB-C. That was a problem for me so I had to buy a USB-C hub and cable separately to connect my existing hardware to it.
All in all, it's definitely a good buy.